A buyer sends a photo of a round button on a control panel and asks for a quote on a "push button switch." The supplier replies with a 6 × 6 mm tactile switch designed for PCB mounting. The part does not match the requirement, leaving the buyer with a quote they cannot use. A second inquiry becomes necessary, adding time to the sourcing process.The problem is not necessarily how the products look, but how the terminology is interpreted. "Push button switch" describes a method of operation, while "tactile switch" identifies a type of switch designed to provide tactile feedback. Although tactile switches can fall within the broad functional meaning of push button switches, manufacturers and distributors may list them as separate product categories. This difference in terminology can lead to sourcing errors when a buyer specifies only "push button switch" without clarifying the mounting style or application.Many BOMs, datasheets, and product pages list these terms side by side. That is where misunderstandings can begin. The buyer may need a panel-mount button assembly, while the supplier interprets the same description as a small PCB tactile switch. What Is a Tactile Switch, and When Do Engineers Choose One? On a circuit board, a tactile switch usually serves one main purpose: to signal to a processor that a button has been pressed. In a normally open (NO) tactile switch, the contacts close when the actuator is pressed. In a momentary version, the contacts return to their normal open state when the actuator is released. The tactile feedback helps users recognize that the switch has been actuated. PCB tactile switches come in SMT and through-hole versions. Most are small enough to sit beside other components, with a low cap or actuator. Because they switch logic-level signals, they are rarely asked to carry a motor, a lamp, or a mains load. Typical places you will find them include remote controls, keyboards, wearables, appliance front panels, communication equipment, and instrument interfaces. For construction details and type breakdowns, see our guide to tactile switch types and specifications. What Does "Push Button Switch" Actually Mean? "Push button switch" is the wider term. Anything you operate by pressing a button fits under it, tactile switches included. In a sourcing conversation, though, the phrase usually points to the larger panel button: the one mounted through a hole in the enclosure and used to start, stop, or reset equipment. Those two uses of the same phrase are why quotes go wrong. A BOM line that only says "push button switch" can be filled by a 6 mm tact switch or a 22 mm panel button. Both are push buttons. Only one will fit the board or the panel. Panel buttons also raise questions that a tact switch never raises: is the action momentary or latching, what load does the contact carry, what cutout does the panel need, is there a lamp, and does the front need sealing? Those are not upgrades of a tact switch. They are a different product family. For the wider classification picture, read our article on how switching devices are classified. Where Do Tactile Switches and Panel Push Buttons Really Differ? The comparison only becomes useful when both sides are concrete. Below, the left column is the PCB tact switch most engineers mean. The right column is the panel or industrial button most buyers mean when they use the short phrase. What to Check Tactile Switch Panel Push Button Main role Signal input on a PCB Operator control on equipment Typical application Low-level signal input, reset and user-interface functions Equipment control, such as start, stop and reset Operation Commonly momentary Momentary or latching Mounting PCB, SMT or through-hole Panel cutout; some PCB versions exist Actuator and space Compact, low travel Larger cap, longer travel, behind-panel depth Operating feel Distinct click feedback Click, smooth, detent, or illuminated Confirm in datasheet Footprint, pinout, height, force, life Cutout, rating, contact form, cap, sealing There are multiple variants of push button switches. The confusion can happen not only between panel-mount push buttons and tactile switches, but also between latching PCB push switches and momentary tactile switches.Two rows cause most of the trouble. Current rating is not a family rule. You can find panel buttons rated for a few milliamps and tactile switches rated for low-level signals, but the numbers come from the specific part, not the label. Operation is the same story: momentary and latching both exist in the panel family, while the small PCB versions are usually momentary. Mounting style is one of the most useful ways to distinguish these products in a sourcing inquiry, although it is not an absolute rule. Typical PCB tactile switches are soldered directly to circuit boards, while industrial panel push buttons are usually secured through a cutout in the enclosure. However, PCB-mounted push buttons and larger tactile switches also exist. Always confirm the mounting method, dimensions, terminal arrangement, and mechanical drawing before selecting a replacement. What Should Buyers Check Before Ordering? The fastest way to avoid the mix-up is to make the BOM line more specific. These are the fields we ask for before quoting: Function: press-and-hold (momentary) or press-to-latch? Mounting: PCB pads or panel cutout? Include the drawing. Load: what voltage and current will the contacts switch? Actuator: cap height and shape, plus the space around it. Environment: dust, moisture, cleaning, or temperature limits? Life: how many operations, and under what test condition? Photos help, but they do not replace a drawing. A button that looks right from the front can have the wrong pin spacing, actuator height, or terminal type. If the part is going into an existing product, compare the sample against the current drawing before you approve it. If a tactile switch has already failed in the field, our troubleshooting guide for tactile switches covers the common causes. Conclusion "Push button switch" is a broad functional term describing a switch operated by pressing. A tactile switch is designed to provide tactile feedback and is commonly used as a compact PCB input component. Panel push buttons serve similar pressing functions but are typically selected for equipment control and panel mounting.For accurate sourcing, the BOM, drawing, and quotation should clearly specify the mounting method, operating function, electrical rating, and relevant dimensions. Clear specifications help prevent mismatches and reduce unnecessary back-and-forth during procurement.Need a sample or a specification check? Contact Kinghelm.

In modular equipment, slim enclosures, and stacked circuit board assemblies, connector footprint often becomes a bottleneck in PCB layout. While 2.54 mm-pitch female headers offer broad compatibility, engineers working with limited space often need a more compact alternative. Kinghelm's KH-2FH90-2X5P-H6.35 female header features a 2 mm pitch, a dual-row right-angle design, and square-hole contacts, providing a compact connectivity solution that balances high density with reliable performance. Key Product Specifications: Pin configuration: 2 × 5P Pitch: 2 mm Row spacing: 2 mm Contact hole type: Square hole Mating direction: Side-entry Mounting style: Right-angle Number of rows: Dual row Rated current: 1.5 A Insulator height: 4 mm Operating temperature range: -40°C to +105°C Kinghelm KH-2FH90-2X5P-H6.35 Product Image 2 mm Pitch and Dual-Row Design: High-Density Connectivity in Limited Space Traditional 2.54 mm-pitch female headers offer excellent versatility for standard applications. However, in space-constrained designs such as modular boards, control boards, and consumer electronics, their larger pin spacing requires a greater PCB footprint. With a 2 mm contact pitch and 2 mm row spacing, the KH-2FH90-2X5P-H6.35 can significantly reduce the connector's footprint compared with a 2.54 mm-pitch counterpart with the same number of contacts. This product features a 2 × 5P dual-row configuration, providing a total of 10 contact positions. The dual-row design not only increases connection density but also improves PCB layout efficiency. For applications requiring multiple connectors on a limited board area, a dual-row arrangement accommodates more contacts without increasing the connector's length, leaving additional space for surrounding components and routing. Right-Angle Design: A Key Solution for Height-Constrained Applications The KH-2FH90-2X5P-H6.35 features a 90-degree right-angle configuration, with its terminals extending horizontally from the side of the connector body. The main advantage of this design is the change in connection direction. Unlike vertical female headers, the right-angle structure allows a compatible male header or cable connection to extend horizontally along the PCB, helping reduce the space required in the vertical direction. In practical engineering applications, this design is particularly useful when internal device height is limited, such as in slim enclosures and stacked PCB assemblies, or when side-entry connections are required. A right-angle female header allows the connector and its mating component to extend horizontally, supporting more compact internal layouts. It also provides greater flexibility in PCB placement, helping engineers balance electrical connection requirements with enclosure dimensions and assembly constraints. Round-Hole vs. Square-Hole Contacts: How Contact Design Affects Performance When selecting female headers, the distinction between round-hole and square-hole contacts is an important consideration. Round-hole female headers typically use internal spring contacts that grip the inserted male pin through spring force, often creating two primary contact points. Square-hole female headers commonly use a multi-finger spring contact structure that grips the pin from multiple directions, potentially providing four contact points. These differences in contact geometry can affect electrical and mechanical performance. A well-designed multi-point contact system can distribute contact force more evenly and help maintain a stable connection. Actual contact resistance, vibration resistance, and insertion and withdrawal durability, however, depend on the contact material, plating, spring design, dimensional tolerances, and overall connector construction—not simply the number of contact points. The KH-2FH90-2X5P-H6.35 uses square-hole contacts. Within its compact 2 mm-pitch configuration, this contact structure is designed to provide secure pin engagement and reliable electrical connectivity. It is a practical option for applications where stable connections are important despite limited connector dimensions. Square-Hole Contacts and a 4 mm Insulator Height: Balancing Reliability and Compactness The product has an insulator height of 4 mm. This dimension helps maintain a compact connector profile while providing structural support for the connector body. When selecting a connector, engineers should evaluate the 4 mm insulator height in conjunction with PCB thickness, the height of nearby components, and the available space inside the enclosure. It is suitable for applications with certain vertical clearance constraints that do not require an ultra-low-profile connector. The combination of square-hole contacts and a 4 mm insulator height offers a practical balance between compact dimensions and connection reliability. Kinghelm KH-2FH90-2X5P-H6.35 Specification Electrical Performance and Temperature Compatibility The KH-2FH90-2X5P-H6.35 has a rated current of 1.5 A, making it suitable for many board-level signal connections and low- to moderate-power applications. Its operating temperature range of -40°C to +105°C supports use in a wide range of consumer electronics and general industrial control environments. For applications requiring higher current capacity, Kinghelm offers products in its 2.54 mm-pitch series with rated currents of up to 3 A, according to the relevant product specifications. Engineers should select the appropriate model based on actual load requirements and verify the applicable ratings for the specific connector. Typical Applications and Selection Recommendations Based on its key specifications and structural features, the KH-2FH90-2X5P-H6.35 is suitable for a range of applications, including: Compact control boards: Board-to-board connections where PCB space is limited. Modular equipment: Side-entry interfaces that support compact internal layouts. Consumer electronics: Internal connections in devices with restricted installation space. Industrial control modules: Compact signal connections where stable mating performance is required. Test and measurement equipment: Applications that use 2 mm-pitch right-angle female headers. Its square-hole contact design makes it worth considering for applications where secure pin engagement and connection stability are important. Actual suitability for high-vibration environments or applications requiring frequent mating cycles should be confirmed against the manufacturer's verified mechanical specifications and test data. When selecting a compatible connector, engineers should pay particular attention to two factors. First, ensure that the mating male header matches the female header's pitch, row spacing, pin configuration, contact geometry, and mating orientation. Second, verify that the rated current of 1.5 A meets the application's electrical requirements, taking into account contact resistance, operating conditions, and any applicable derating guidelines. From board-to-board connections on compact control boards to side-entry interfaces in industrial control modules, the KH-2FH90-2X5P-H6.35 combines a 2 mm pitch, a dual-row right-angle configuration, and square-hole contacts to deliver compact connectivity for space-constrained designs. For engineers seeking to balance PCB space efficiency with dependable electrical connections, it is a practical option within Kinghelm's female header product range. About Kinghelm Kinghelm (www.kinghelm.net) provides a broad portfolio of connectivity and RF solutions, serving industries such as communications, automotive electronics, industrial equipment, and the Internet of Things (IoT). Its product portfolio ranges from high-precision BeiDou navigation antennas to reliable signal interconnects for smart vehicles. The company's offerings include Type-C, SMA, IPEX, MCX, and HDMI connectors; automotive wiring harnesses; adapter cables; pin headers; terminals; RF cables; antennas; GPS antennas; RF coaxial connectors; Wi-Fi antennas; BeiDou antennas; embedded antennas; 4G antennas; ceramic antennas; and other electronic components. With more than 8,000 SKUs, Kinghelm offers a broad product selection designed to support customers throughout the product selection, development, and mass-production process, providing integrated connectivity and RF solutions for a variety of applications. KH-2FH90-2X5P-H6.35View Product Details

As electronic devices continue to evolve toward miniaturization and higher connection density, the selection of board-to-board connectors directly affects PCB layout, assembly efficiency, and overall product reliability. The Kinghelm KH-2FH90-2X3P-H6.35 dual-row right-angle female header features a uniform 2 mm pitch, a 2×3P square-hole configuration, and a right-angle mounting design. With an operating temperature range of -40°C to +105°C, it provides a reliable board-to-board connection solution for consumer electronics, industrial control systems, communication equipment, and other applications. Kinghelm KH-2FH90-2X3P-H6.35 Product Image 1. Product Overview and Key Specifications The KH-2FH90-2X3P-H6.35 is a dual-row, right-angle female header developed by Kinghelm. Its product specifications include right-angle mounting, a 2 mm pitch, box packaging, a 2×3P socket configuration, a 2 mm row spacing, square holes, a dual-row layout, a rated current of 1.5 A, a plastic height of 4 mm, and an operating temperature range of -40°C to +105°C. This model is suitable for conventional PCB mounting applications, particularly board-to-board connections that require lateral mating or must accommodate limited installation space. For engineers comparing 2 mm pitch dual-row right-angle female headers or 2×3P square-hole headers, the KH-2FH90-2X3P-H6.35 is a model worth considering. It combines the space-saving benefits of a 2 mm pitch with a square-hole contact configuration, making it suitable for low- to moderate-current signal transmission and module interconnection. 2. Advantages of the 2 mm Pitch and Right-Angle Design A 2.54 mm pitch is a classic connector specification, while pitches of 1.27 mm or smaller are generally used in ultra-high-density applications and may impose greater demands on PCB fabrication and soldering processes. A 2 mm pitch offers a practical balance between space efficiency and manufacturing feasibility, making it suitable for applications that require multiple signal connections within a limited PCB footprint. The KH-2FH90-2X3P-H6.35 adopts a uniform 2 mm pitch, making it suitable for arranging a moderate number of signal channels in space-constrained designs. Its right-angle mounting configuration is another key feature. The right-angle structure allows the female header to be mounted along the edge of a PCB, enabling horizontal mating with a compatible pin header and facilitating connections in the direction parallel to the board surface. In modular electronic products, a right-angle female header can connect a mainboard to a functional daughterboard through lateral mating. This arrangement helps reduce vertical clearance requirements while making modules easier to remove, replace, and maintain. For applications requiring a 2 mm pitch right-angle female header, this design is particularly useful in compact equipment. 3. Square-Hole Design and Electrical Performance The KH-2FH90-2X3P-H6.35 features a square-hole configuration. When properly matched with a compatible pin header, the contact geometry can help provide stable electrical contact and consistent alignment. Actual contact performance and mating durability depend on the terminal design, plating, dimensional tolerances, and compatibility of the mating components. The dual-row 2×3P configuration provides six contact positions, making it suitable for a small number of signal or power connections. Typical examples include connections between sensor modules and controller boards, or between display modules and driver boards. From an electrical perspective, the rated current of 1.5 A supports many low-power applications. The terminal material and plating should be confirmed against the manufacturer's official datasheet rather than assumed from the product category. With an operating temperature range of -40°C to +105°C, this wide-temperature female header may be suitable for consumer and industrial electronic equipment, provided that the complete application meets the connector's electrical, mechanical, and environmental requirements. The 4 mm plastic height also helps designers manage connector height in compact assemblies, leaving more flexibility for PCB stacking and enclosure design. 4. Brand Profile: Kinghelm Kinghelm is a brand under Shenzhen Kinghelm Electronics Co., Ltd. The company is a National High-Tech Enterprise, and its core team members have backgrounds at Tsinghua University and the University of Electronic Science and Technology of China. The company has focused on microwave and RF technologies for nearly two decades. Its product portfolio includes BeiDou and GPS antennas, RF components, broadband data connectors, interconnects and terminals, automotive wiring harnesses, industrial connectors, and customized components for specialized applications. In quality management, Kinghelm has obtained ISO 9001 Quality Management System and ISO 14001 Environmental Management System certifications. According to the supplied product information, its products comply with RoHS and REACH requirements. IATF 16949, UL, and TÜV certifications are described as being under application. These certification statuses should be verified with the company before being used for formal procurement or compliance documentation. The company's quality inspection processes cover various performance indicators, including high-temperature resistance and oxidation resistance, helping support product consistency and reliability. Kinghelm KH-2FH90-2X3P-H6.35 Datasheet 5. Applications: Which Devices Are Suitable for This 2 mm Female Header? The KH-2FH90-2X3P-H6.35 can be considered for a range of electronic manufacturing applications. Consumer electronics: Connections between mainboards and functional modules in smart wearables, tablets, compact routers, and similar devices. Industrial control: Interconnections in small programmable logic controllers (PLCs), sensor modules, and other control equipment where the operating temperature requirements are compatible with the connector's specifications. Communication equipment: Lateral board-to-board connections in compact communication modules and other space-constrained assemblies. Medical electronics: Internal module interconnections, subject to the applicable safety, reliability, and regulatory requirements of the finished device. Automotive electronics: Modular interconnections where the connector's electrical, mechanical, environmental, and qualification requirements are appropriate for the specific application. The right-angle configuration offers flexibility for lateral board-to-board connections, while the compact 2 mm pitch helps engineers optimize PCB space utilization. 6. Selection Recommendations and Frequently Asked Questions When selecting a female header, engineers should verify the pin pitch, row spacing, number of contact positions, mounting orientation, mating-header compatibility, and PCB footprint. The KH-2FH90-2X3P-H6.35 has the following stated specifications: Pitch: 2 mm Row spacing: 2 mm Contact configuration: 2×3P, six positions Mounting style: Right-angle Number of rows: Dual row Hole configuration: Square Rated current: 1.5 A Plastic height: 4 mm Operating temperature: -40°C to +105°C Packaging: Box Before finalizing the design, engineers should also confirm the PCB hole and pad dimensions, terminal dimensions, mating pin-header specifications, contact plating, insulation resistance, dielectric withstand voltage, and current derating requirements using the official datasheet. If the application requires a higher current rating or more contact positions, other models in the Kinghelm female-header series may be more appropriate. Box packaging can also facilitate organized material handling and production-line assembly. For board-to-board applications requiring a compact footprint, wide-temperature capability, and lateral mating, this model offers a useful combination of features for further evaluation. Conclusion The Kinghelm KH-2FH90-2X3P-H6.35 dual-row right-angle female header combines a 2 mm pitch, a 2×3P square-hole configuration, right-angle mounting, a rated current of 1.5 A, and an operating temperature range of -40°C to +105°C. These features make it a candidate for compact PCB layouts where space efficiency, practical manufacturability, and reliable interconnection are important. For engineers and procurement professionals evaluating 2 mm pitch female headers, dual-row right-angle female headers, or 2×3P square-hole connectors, the Kinghelm KH-2FH90-2X3P-H6.35 is worth including in the selection process. Final approval should be based on the official datasheet and verification of the requirements of the intended application. About Kinghelm With more than a decade of experience in interconnection systems and wireless signal transmission, Kinghelm (www.kinghelm.net) specializes in the design, manufacturing, sales, and technical support of electronic signal connectors and related products. The company has developed a comprehensive product portfolio covering RF coaxial connectors and other RF connectors; Wi-Fi, BeiDou, embedded, 4G, and ceramic antennas; millimeter-wave-related supporting solutions; a wide range of functional switches, including tactile, detection, slide, push-button, micro, multifunction, illuminated, DIP, and toggle switches; as well as headphone jacks, DC power jacks, FPC connectors, USB connectors, automotive wiring harnesses, adapter cables, and sensors. KH-2FH90-2X3P-H6.35View Product Details

In today's rapidly evolving electronics industry, electronic devices are becoming increasingly compact and highly integrated. As an essential component of circuit systems, connectors play an important role in the overall stability and reliability of electronic equipment. Their structural design, mounting method, and electrical performance can directly affect the performance of the entire system. Especially in PCB applications where board space is limited, small-pitch and high-density pin headers and female headers can effectively save PCB space while providing stable signal and power connections. Kinghelm KH-2FH90-2X2P-H6.35 Product Image I. Product Overview Kinghelm KH-2FH90-2X2P-H6.35 is a 2×2P, 2mm-pitch, dual-row right-angle female header designed with a compact structure to provide reliable board-level connections in limited spaces. The product features a right-angle mounting configuration, square-hole contacts, a 4mm insulator height, a rated current of 1.5A, and an operating temperature range of -40°C to +105°C. It is suitable for a wide range of electronic devices that require small-pitch connections and right-angle mounting. II. Product Specifications Brand: Kinghelm Model: KH-2FH90-2X2P-H6.35 Package/Configuration: Right-angle, P=2mm Contact Configuration: 2×2P Pitch: 2mm Row Spacing: 2mm Contact Type: Square hole Mounting Type: Right-angle Number of Rows: Dual row Rated Current: 1.5A Insulator Height: 4mm Operating Temperature: -40°C to +105°C Packaging: Box The above specifications show that the KH-2FH90-2X2P-H6.35 is designed specifically for the connection requirements of compact electronic equipment. Its 2mm pitch and dual-row configuration provide a relatively high connection density within limited PCB space, while the right-angle design offers greater flexibility for different PCB layouts. III. 2×2P Dual-Row Design for High Connection Density and Space Efficiency The KH-2FH90-2X2P-H6.35 features a 2×2P contact configuration with a dual-row design, providing a compact pin arrangement. Both the contact pitch and row spacing are 2mm. Compared with conventional female headers with larger pitches, this design can achieve a higher connection density within the same PCB area, making it suitable for compact control boards, module boards, consumer electronics, and other applications where PCB space is limited. The dual-row configuration not only supports multiple contact connections but also improves PCB space utilization. For applications where multiple connectors need to be arranged on a limited board area, the compact design provides additional space for overall circuit layout and component placement. IV. Right-Angle Design for Greater PCB Layout Flexibility In terms of mounting configuration, the KH-2FH90-2X2P-H6.35 adopts a 90° right-angle design. Compared with conventional vertical female headers, the right-angle configuration changes the connection direction, allowing mating connectors or wires to be routed horizontally along the PCB. This design is particularly suitable for equipment where vertical space is restricted or side-entry connections are required. By making better use of horizontal space, the connector can help reduce the amount of vertical space occupied by the mating components, contributing to a more compact internal device structure. At the same time, the right-angle configuration provides engineers with more options during PCB layout design, making it easier to balance electrical connection requirements with mechanical structure and assembly requirements. V. 2mm Pitch and Square-Hole Design for Reliable Mating The product features a 2mm pitch and square-hole contact structure, allowing it to mate with compatible pin headers and other corresponding connectors. The 2mm small-pitch design helps reduce the PCB footprint of the connector, while the square-hole structure provides a stable contact interface when used with compatible mating components. Although connectors are relatively small components, their long-term operating stability is important to the reliability of the overall electronic system. In equipment that requires repeated mating cycles or long-term operation, selecting properly matched connectors can help reduce connection-related issues and maintain stable system performance. VI. 4mm Insulator Height for Compact PCB Applications The KH-2FH90-2X2P-H6.35 features a 4mm insulator height. The height of the insulating body is an important dimensional parameter when selecting and designing connectors. In practical product development, it should be considered together with PCB thickness, surrounding component heights, enclosure dimensions, and other mechanical requirements. The 4mm insulator height provides a compact overall configuration while meeting the structural requirements of the connector. For electronic devices with limited internal space, a compact connector design can better accommodate high-density component layouts and leave more usable space for PCB design. VII. 1.5A Rated Current for Various Connection Requirements In terms of electrical performance, this model has a rated current of 1.5A. When operated within the specified design conditions and application requirements, it can be used for corresponding signal connections and low-power power connections. Rated current is one of the key parameters that engineers need to consider when selecting a connector. In practical applications, other factors such as operating voltage, ambient temperature, load conditions, number of contacts, and PCB design should also be taken into consideration to ensure reliable connector performance. Therefore, when selecting the product, it is recommended to match the connector specifications with the actual electrical parameters of the circuit and avoid operating beyond the connector's rated conditions. Kinghelm KH-2FH90-2X2P-H6.35 Datasheet VIII. Wide Operating Temperature Range for Different Working Environments The KH-2FH90-2X2P-H6.35 has an operating temperature range of -40°C to +105°C, covering a relatively wide range of operating conditions. For industrial control systems, automation equipment, communication devices, and other electronic products operating under different ambient temperatures, the temperature capability of a connector is an important factor in determining its suitability for a particular application. The wide operating temperature range provides support for applications under various environmental conditions. However, during actual use, the connector should still be selected according to the operating environment of the complete equipment and the specific application requirements. Installation and operation should also comply with the applicable design specifications and product requirements. IX. Product Applications As a compact connector component, the KH-2FH90-2X2P-H6.35 is mainly intended for applications requiring 2mm pitch, dual-row, right-angle connections. Its compact size and flexible configuration make it suitable for different PCB layout requirements. Based on its structural characteristics, this model is particularly suitable for electronic products where PCB space and connection direction are important considerations. During product development, engineers can select the appropriate installation configuration according to the available internal space, PCB layout, and required connection direction. Depending on the specific circuit requirements, the product can be considered for applications including control boards, interface boards, electronic modules, instrumentation, communication equipment, and other electronic devices requiring board-to-board or PCB-level connections. X. Conclusion Overall, the Kinghelm KH-2FH90-2X2P-H6.35 is a 2mm-pitch, dual-row, right-angle female header designed for compact, high-density PCB connection applications. Its 2×2P configuration, 2mm pitch, square-hole contact structure, and right-angle design enable flexible board-level connections in space-constrained applications. Meanwhile, its -40°C to +105°C operating temperature range and 1.5A rated current allow it to meet the connection requirements of a variety of electronic devices. For electronic product designs that prioritize PCB space utilization, flexible connection layouts, and compact component structures, a 2mm-pitch right-angle female header such as the KH-2FH90-2X2P-H6.35 can provide a practical connection solution. During the selection process, engineers should consider the electrical specifications, mechanical dimensions, mating components, and operating environment to ensure the selected connector meets the requirements of the intended application. About Kinghelm Kinghelm (www.kinghelm.net) specializes in the R&D, manufacturing, and technical services of wireless signal transmission and reception products, electronic signal connectors, and interconnection systems. Its product portfolio includes pin headers, female headers, tactile switches, detection switches, toggle switches, push-button switches, micro switches, multifunction switches, illuminated switches, DIP switches, rocker switches, headphone jacks, DC jacks, FPC connectors, USB connectors, waterproof USB connectors, limit switches, rotary encoder switches, tactile buttons, Type-A receptacles, Type-C connectors, joystick switches, five-way switches, rotary switches, SMD detection switches, vertical detection switches, through-hole detection switches, SMD encoder switches, and many other electronic components. These products are widely available through both online and offline channels. Kinghelm supports both prototype sampling and volume production, providing one-stop, high-reliability connection and switching solutions for a wide range of hardware equipment and electronic product applications. KH-2FH90-2X2P-H6.35View Product Details

In circuit board design, connectors are often an "unnoticed" component that can nevertheless determine the success or failure of an entire product. The reliability of wire-to-board connections has a significant impact on whether equipment can be assembled smoothly and operate stably over the long term. When engineers need to route wires from the side of a PCB and neatly guide cables toward one side of an enclosure, a well-designed right-angle connector can greatly simplify the overall layout. Kinghelm’s KH-A42002-2X2AW is specifically designed to meet this type of side-wiring requirement. Kinghelm KH-A42002-2X2AW Product Image Let’s start with its most obvious mechanical feature. The KH-A42002-2X2AW adopts a standard 4.2 mm pitch, a widely used dimension in industrial and consumer electronics applications. Its compatibility is excellent, and the corresponding wire terminals and crimping tools are mature and readily available, helping reduce overall costs from component selection through mass production. The product features a 2×2P pin configuration, with four pins arranged symmetrically in two rows. This structure can support two independent power or signal channels while maintaining balanced mechanical forces during mating, helping prevent pin deformation or poor contact caused by uneven loading. Key Specifications Brand: Kinghelm Part Number: KH-A42002-2X2AW Pin Configuration: 2×2P Pitch: 4.2 mm Mounting Type: Right-angle Rated Current: 7 A Operating Temperature: -25°C to +85°C Rated Voltage: 600 V The right-angle mounting configuration is the core highlight of this product. Compared with a straight connector, the pins of a right-angle connector are positioned parallel to the PCB after soldering, allowing the cable to exit parallel to the board surface. This makes it particularly suitable for applications where circuit boards are installed closely together inside an enclosure and cables need to be routed sideways. This configuration not only reduces cable bending stress but also makes wiring and maintenance more convenient, making it an ideal choice for space-constrained equipment. Kinghelm KH-A42002-2X2AW Datasheet In terms of electrical performance, this connector delivers practical and reliable specifications. With a rated current of 7 A and a rated voltage of 600 V, it provides sufficient current-carrying capability for power transmission and signal distribution in most small- and medium-power equipment. The 600 V rated voltage also provides ample electrical margin for applications such as industrial control systems, LED drivers, and power modules. With an operating temperature range of -25°C to +85°C, the connector can operate reliably in conventional industrial environments as well as in certain outdoor equipment applications. In terms of materials and manufacturing processes, the KH-A42002-2X2AW is equally well engineered. The housing is made of PA66 engineering plastic, which offers excellent heat resistance and mechanical strength and is less prone to deformation or cracking during long-term use. The transparent housing allows assembly personnel to visually inspect the pin positions and mating status, making production-line inspection and troubleshooting more convenient. The housing has a UL94 V-2 flammability rating, which helps limit the spread of flames in the event of abnormal overheating or a short circuit, adding another layer of safety to the overall equipment. The contacts are made of brass with tin plating, combining good electrical conductivity with oxidation resistance and durability during repeated mating cycles. This helps maintain stable contact resistance and reliable signal transmission over long-term use. Kinghelm KH-A42002-2X2AW Datasheet In terms of applications, this wire-to-board connector is widely suitable for LED lighting fixtures, household appliances, power adapters, industrial control boards, and other applications requiring reliable connections between wire harnesses and PCBs. Whether used for power input, signal distribution, or interconnection between control boards and functional boards, the KH-A42002-2X2AW can help engineers shorten development cycles and improve production yield through its stable electrical performance and convenient installation. Overall, the Kinghelm KH-A42002-2X2AW wire-to-board connector combines a mature 4.2 mm pitch platform, reliable right-angle configuration, and solid electrical specifications, achieving a good balance between performance, cost, and assembly convenience. For engineers looking for a cost-effective solution for side-entry wiring, the KH-A42002-2X2AW is worth considering as part of the connector selection process. About Kinghelm Kinghelm (www.kinghelm.net) specializes in the design, manufacturing, sales, and technical services of wireless signal transmission and reception products, electronic signal connectors, and interconnection system products. Its product portfolio includes tactile switches, detection switches, toggle switches, push-button switches, microswitches, multifunction switches, illuminated switches, DIP switches, rocker switches, headphone jacks, DC jacks, FPC connectors, USB connectors, waterproof USB connectors, detection switches, limit switches, encoder switches, tactile buttons, Type-A receptacles, Type-C connectors, joystick switches, five-way switches, thumbwheel switches, SMD detection switches, vertical detection switches, through-hole detection switches, and SMD encoder switches, among others. Kinghelm’s products continue to achieve strong sales through both online and offline channels. Popular models include the KH-6X6X5H-STM and KH-6X6X5H-Z2J tactile switches, the KH-IPEX-K501-29 RF coaxial connector, and the KH-TYPE-C-16P USB connector. KH-A42002-2X2AWView Product Details

In electronic hardware systems, wire-to-board connectors serve as critical interconnection points between cables and PCBs, directly supporting stable signal and power transmission. The Kinghelm KH-A42002-2X1AW is a 4.2mm-pitch, 2×1P double-row, right-angle wire-to-board connector. Featuring a proven housing design and stable electrical performance, it is widely used in small- and medium-power applications such as power modules, industrial control equipment, smart home devices, and LED lighting drivers, providing hardware engineers with a reliable and efficient wire-to-board connection solution. Kinghelm KH-A42002-2X1AW Product Image Part Number: KH-A42002-2X1AW Product Type: Wire-to-board connector Position Configuration: 2×1P double-row Pitch: 4.2mm Mounting Type: Right-angle through-hole soldering Rated Current: 7A (AC/DC) Rated Voltage: 600V (AC/DC) Operating Temperature: -25°C to +85°C Housing Material: PA66, UL94V-2 flame-retardant rating Contact Material: Tin-plated brass Contact Resistance: Max. 20mΩ Insulation Resistance: Min. 1000MΩ Withstanding Voltage: 1500V AC for 1 minute Packaging: Bag Reliable Materials and Manufacturing The connector housing is made of PA66 thermoplastic material and meets the UL94V-2 flame-retardant rating. It offers good heat resistance, mechanical strength, and insulation performance. The material helps maintain dimensional stability in elevated-temperature environments and reduces the risk of electrical short circuits. The contact pins are made of brass with tin plating, providing good electrical conductivity while improving oxidation resistance and solderability during wave soldering. This contributes to reliable solder joints and simplified assembly processes. The housing features a well-designed locking mechanism. Once the mating connector is inserted, it locks securely in place and is resistant to accidental loosening. Even after repeated mating and unmating cycles, the connector maintains stable contact performance, helping extend the service life of the overall equipment. Right-Angle Design for Space-Constrained Applications The KH-A42002-2X1AW adopts a right-angle through-hole soldering design. The pins are bent 90° and soldered to the PCB, while the cable mating direction is perpendicular to the PCB plane. This configuration is particularly suitable for applications where overall equipment thickness is limited or where the back side of the PCB is densely populated with surface-mount components. Since no additional clearance is required underneath the PCB for pin penetration, the right-angle design can help reduce overall equipment thickness and improve the utilization of internal assembly space. Right-Angle vs. Vertical Connectors When selecting a wire-to-board connector, engineers often need to choose between right-angle and vertical configurations. These are different mounting structures, each suited to specific mechanical designs. For a vertical connector, the pins are perpendicular to the connector housing and pass through the PCB, while the cable mating direction is generally parallel to the PCB surface. This configuration requires sufficient clearance on the opposite side of the PCB for the pins. In contrast, the pins of a right-angle connector are bent before soldering and occupy the same side of the PCB. This eliminates the need for additional clearance beneath the board. From a mechanical loading perspective, the insertion and removal force of a vertical connector is primarily along the pin axis, while a right-angle connector transfers the mating force more parallel to the PCB surface. In applications subject to vibration or cable pulling, this structure can provide improved mechanical stability. Neither configuration is inherently superior; the appropriate choice depends on the mechanical structure and space requirements of the equipment. The KH-A42002-2X1AW right-angle version is specifically designed to address space constraints in compact and low-profile devices. Kinghelm KH-A42002-2X1AW Datasheet Wide Range of Applications With a 7A current rating and compact 2×1P configuration, the KH-A42002-2X1AW is suitable for a wide range of applications. Inside switching power supplies, for example, internal space is often limited and the back side of the PCB may be densely populated with SMD components. The right-angle design eliminates the need for additional clearance beneath the PCB, allowing the cable to be connected upward and simplifying the assembly process. The connector can also be used in compact industrial control modules, LED lighting driver boards, smart home control boards, and other electronic devices where reliable power connections and efficient space utilization are required. The product is also compatible with industry-standard 4.2mm-pitch connectors, allowing direct replacement of components with the same specifications and helping reduce material replacement costs during product development and maintenance. Reliable Wire-to-Board Connectivity for Hardware Applications When selecting a connector for a hardware project, engineers should consider not only pitch, number of positions, rated voltage, and rated current, but also the internal space available in the equipment, vibration conditions, operating temperature range, and flame-retardant requirements. The Kinghelm KH-A42002-2X1AW undergoes strict factory inspection to ensure stable structural and electrical performance. It combines reliable connectivity, convenient assembly, efficient space utilization, and cost-effectiveness, making it a suitable solution for wire-to-board connections in small- and medium-power electronic equipment. Although connectors may be relatively small components within an electronic system, the failure of a single connection point can potentially cause malfunction of the entire device. With years of experience in interconnection components, Kinghelm continues to provide a broad portfolio of RF connectors, board-to-board connectors, wire-to-board connectors, and other interconnect solutions. The KH-A42002-2X1AW continues this commitment to product quality and provides stable and reliable connectivity for a wide range of electronic hardware projects. About Kinghelm Song Shiqiang introduced that Kinghelm's products—including tactile switches, detection switches, slide switches, push-button switches, micro switches, multifunction switches, illuminated switches, DIP switches, toggle switches, headphone jacks, DC jacks, FPC connectors, USB connectors, waterproof USB connectors, Type-C connectors, SMA connectors, IPEX connectors, MCX connectors, HDMI connectors, automotive wiring harnesses, adapter cables, and more—are popular through both online and offline sales channels. Among its DIP switch products, KH-BM2.54-4P is one of the popular models, while KH-TYPE-C-16P is the company's highest-selling Type-C female connector model. KH-A42002-2X1AWView Product Details

In electronic equipment, industrial control systems, power systems, and various wiring applications, wire-to-board connectors provide electrical connections between wires and PCBs. For applications requiring relatively high current capacity, high withstand voltage, and reliable mechanical connections, connector pitch, pin count, electrical specifications, and material properties all need to be considered comprehensively. The KH-A42002-2X7A from Kinghelm is a wire-to-board connector featuring a 2×7P pin configuration, 4.2mm pitch, and through-hole mounting. With a rated current of up to 7A, it can be used for a variety of wire-to-PCB connection applications. Kinghelm KH-A42002-2X7A Product Image 1. Features of the KH-A42002-2X7A The KH-A42002-2X7A features a through-hole design with pins arranged in two rows, providing a total of 14 positions, or 2×7P. The connector has a 4.2mm pitch. Compared with connectors featuring smaller pitches, the larger spacing between adjacent pins provides more installation and wiring space while supporting multiple power or signal connections. The connector is rated for 7A AC/DC and 600V AC/DC, making it suitable for certain power connection and industrial electronic applications. The housing/wafer is made of PA66 with a UL94V-2 flame-retardant rating, while the pins are made of brass with tin plating. This construction provides suitable electrical conductivity while also supporting soldering and connection reliability. In terms of mounting, the KH-A42002-2X7A adopts a through-hole mounting structure and can be directly installed on a PCB. It can be used with a compatible wire-side connector to form a complete wire-to-board connection solution. The connector features a transparent housing, providing a simple appearance and making it convenient to visually identify the connector structure during assembly. 2. Main Electrical and Material Specifications According to the product specifications, the main parameters of the KH-A42002-2X7A are as follows: Model: KH-A42002-2X7A Brand: Kinghelm Type: Wire-to-board connector Configuration: 2×7P pin header Number of Positions: 14 Pin Pitch: 4.2mm Mounting Method: Through-hole / THT Rated Current: 7A AC/DC Rated Voltage: 600V AC/DC Operating Temperature: -25°C to +85°C Contact Resistance: ≤20mΩ Insulation Resistance: ≥1000MΩ Withstand Voltage: 1500V AC/minute Wafer Material: PA66 Flammability Rating: UL94V-2 Pin Material: Brass Pin Finish: Tin-plated Packaging: Bag These specifications provide basic reference information for connector selection. In actual applications, the PCB layout, operating environment, wire specifications, and mating connector structure should also be considered. 3. Why Is Matching Connector Pitch and Pin Count Important? When selecting a wire-to-board connector, pitch and pin count are two important structural parameters. Connector pitch generally refers to the center-to-center distance between adjacent pins. For example, the KH-A42002-2X7A has a 4.2mm pitch, meaning that the center distance between adjacent positions is 4.2mm. Pitch not only affects the physical dimensions of the connector but also directly affects PCB pad layout and available wiring space. Pin count determines the number of independent electrical connection points provided by the connector. The KH-A42002-2X7A uses a 2×7P configuration, consisting of two rows with seven pins per row, for a total of 14 pins. For equipment requiring multiple power, control, or signal connections, a multi-position connector can help integrate several circuits into a single connector interface and simplify wiring. Therefore, when selecting a wire-to-board connector, both the required number of pins and the distance between adjacent pins should be confirmed. For example, if the PCB is designed for a 4.2mm pitch, the selected connector should have a corresponding 4.2mm pitch. If the circuit requires 14 connection points, a 2×7P configuration can be considered, provided that the other mechanical dimensions and electrical requirements are also compatible. It is important to note that the same pin count does not necessarily mean that two connectors are directly interchangeable. Even if two connectors are both 14-pin products, differences in pitch, row spacing, pin arrangement, mounting direction, or mating connector design may prevent them from being properly assembled. Therefore, connector selection should generally consider pitch + row configuration + pin count + connector structure together. 4. What Applications Are Suitable for a 4.2mm-Pitch Connector? A 4.2mm pitch is a commonly used medium-size connector pitch and can provide a balance between installation space, electrical spacing, and connection requirements. Similar wire-to-board connectors may be used in industrial control equipment, power control boards, LED lighting equipment, household appliances, automation equipment, and certain motor control systems. For applications involving multiple power or control circuits, the 2×7P, 14-pin configuration of the KH-A42002-2X7A can provide multiple connection points within a relatively compact PCB area. For current-carrying applications, the rated current and actual operating current should be carefully considered. Although the KH-A42002-2X7A has a rated current of 7A, the connector rating should not be considered in isolation. Wire gauge, PCB copper trace width, temperature rise, ambient conditions, and continuous operating time should also be taken into account during product design. Kinghelm KH-A42002-2X7A Datasheet 5. What Else Should Be Considered During Connector Selection? In addition to pitch and pin count, wire-to-board connector selection should also take into account the mounting method, mating connector, operating temperature, voltage rating, and current rating. The KH-A42002-2X7A uses a through-hole mounting structure and is suitable for corresponding PCB through-hole assembly processes. If the PCB is designed for surface-mount technology (SMT), it is necessary to confirm whether the connector structure is compatible with the intended manufacturing process. The mating connector should also be verified to ensure that the pin header and wire-side connector are properly matched in terms of mechanical dimensions and electrical configuration. In terms of electrical performance, the KH-A42002-2X7A features a 600V AC/DC rated voltage, 1500V AC/minute withstand voltage, and ≥1000MΩ insulation resistance, which can serve as reference specifications for connector selection in relevant equipment designs. The specified operating temperature range is -25°C to +85°C. If the actual application environment exceeds this range, a connector specifically designed for the required temperature conditions should be selected. 6. Conclusion Overall, the Kinghelm KH-A42002-2X7A features a 4.2mm pitch and 2×7P dual-row, 14-pin configuration, providing multiple connection points while maintaining relatively generous pin spacing. With a rated current of 7A, it can be used in a variety of wire-to-PCB connection applications. During the connector selection process, it is important to verify the pitch, pin count, row configuration, mounting method, mating structure, and electrical specifications. Ensuring that the connector is properly matched with the PCB and wire-side connector can help improve assembly efficiency and connection reliability. About Kinghelm Kinghelm (www.kinghelm.net) specializes in the design, manufacturing, sales, and technical services of wireless signal transmission and reception products, electronic signal connectors, and interconnection system products. Under the "kinghelm" brand, the company offers a wide range of products, including Type-C connectors, SMA connectors, IPEX connectors, MCX connectors, HDMI connectors, automotive wiring harnesses, adapter cables, pin headers, terminals, RF cables, antennas, GPS antennas, RF coaxial connectors, WiFi antennas, BeiDou antennas, embedded antennas, 4G antennas, ceramic antennas, RF connectors, electronic components, sensors, millimeter-wave products, headphone jacks, DC jacks, FPC connectors, USB connectors, waterproof USB connectors, tactile switches, Type-A receptacles, Type-C interfaces, and other related products. These products are continuously supplied to customers through both online and offline sales channels. KH-A42002-2X7AView Product Details

As electronic devices continue to evolve toward greater intelligence and compactness, connectors have become an essential part of electronic systems, providing power transmission, signal connectivity, and module interconnection. Among them, wire-to-board connectors are widely used in consumer electronics, industrial equipment, power systems, and household appliances due to their easy installation, reliable connection, and broad application range. Kinghelm has introduced the KH-A42002-2X5A wire-to-board connector, featuring a 2×5P pin configuration and a 4.2mm pitch. With a rated current capacity of up to 7A, it is suitable for a variety of power and signal connection applications, providing equipment with a stable and reliable connection solution. Kinghelm KH-A42002-2X5A Product Image High-Reliability Design for a Wide Range of Applications The KH-A42002-2X5A is a through-hole wire-to-board connector featuring a 2×5P pin configuration with a total of 10 contact terminals. This design supports multiple power and signal connections simultaneously. With a standard 4.2mm pitch, the connector balances high-current carrying capability with connection stability, making it suitable for applications including power modules, LED lighting, household appliances, industrial control equipment, and new energy systems. Key Specifications Brand: Kinghelm Model: KH-A42002-2X5A Type: Wire-to-board connector Pin Configuration: 2×5P Pitch: 4.2mm Mounting Type: Through-hole (DIP) Package: Through-hole, P=4.2mm Rated Current: 7A Rated Voltage: 600V Operating Temperature: -25°C to +85°C Flammability Rating: UL94V-2 Color: Transparent Packaging: Bag The 7A rated current enables the connector to meet the connection requirements of relatively high-power equipment, while the 600V rated voltage further expands its potential applications in industrial and power-related systems. Advantages of the 4.2mm Pitch In wire-to-board connectors, pitch is an important parameter that affects electrical and mechanical performance. The KH-A42002-2X5A adopts a 4.2mm pitch. Compared with smaller-pitch connectors such as 2.0mm and 2.54mm products, its larger pitch is designed to support higher current capacity while providing enhanced mechanical strength. The relatively large contact area of the terminals helps reduce contact resistance and heat generation, improving connection reliability. At the same time, the 4.2mm pitch makes mating and assembly easier, while providing a more secure connection for equipment operating under vibration or over extended periods. The transparent housing is made from material meeting the UL94V-2 flammability rating, providing electrical insulation while enhancing safety and durability. How to Choose the Right Pitch for Wire-to-Board Connectors In practical product design, engineers often need to determine which wire-to-board connector pitch is most suitable for their application. In general, connector pitch should be selected based on a combination of factors such as current requirements, available space, and operating environment. For compact devices such as smart wearable products, small sensors, and portable electronic equipment, smaller-pitch connectors such as 1.25mm and 2.0mm are commonly used to save PCB space. For general consumer electronics, control boards, and household appliances, connectors with 2.54mm and 3.96mm pitches are widely used, providing a balance between space efficiency and current-carrying requirements. For higher-power applications such as power modules, industrial control systems, motor drives, new energy equipment, and LED power systems, 4.2mm or larger pitch connectors can offer advantages. A larger pitch generally allows for more robust terminal structures and greater spacing between conductive elements, which can support higher current and insulation requirements. The KH-A42002-2X5A is designed for medium- to high-current applications. Its 4.2mm pitch, 7A rated current, and 600V rated voltage provide a combination of current-carrying capability, connection stability, and electrical safety for a variety of applications. Kinghelm KH-A42002-2X5A Specification Through-Hole Design for Enhanced Mechanical Reliability Compared with surface-mount connectors, through-hole (DIP) connectors generally provide stronger mechanical anchoring. The KH-A42002-2X5A uses a through-hole mounting design. Once soldered onto the PCB, the connector forms a robust mechanical connection, making it particularly suitable for equipment exposed to vibration or long-term operation. In industrial automation equipment, power control systems, and large household appliances, continuous operation can generate vibration and temperature fluctuations. If a connector is not mechanically secure, contact problems may occur over time. The through-hole structure helps improve resistance to mechanical stress and vibration, contributing to greater overall equipment reliability. Kinghelm Quality Assurance Kinghelm is a Chinese electronics brand specializing in connectors, RF components, antennas, and related electronic products. The KH-A42002-2X5A is manufactured in accordance with relevant industry standards and is designed to provide good consistency and stable performance for high-volume production applications. As electronic equipment continues to evolve toward higher performance and greater reliability, connectors are playing an increasingly important role. With its 4.2mm pitch, 2×5P configuration, 7A current-carrying capability, and 600V rated voltage, the Kinghelm KH-A42002-2X5A provides a reliable connection solution for power and industrial applications. For equipment requiring a combination of high-current capability, connection stability, and electrical safety, the KH-A42002-2X5A is a practical wire-to-board connector option. About Kinghelm Kinghelm specializes in connectors, antennas, RF products, and a wide range of electronic components, providing stable and convenient connection and transmission solutions for different types of electronic equipment. Its product portfolio includes common Type-C, USB, HDMI, and FPC connectors, as well as SMA, IPEX, MCX, and RF coaxial connectors. The company also offers pin headers, terminals, headphone jacks, DC sockets, tactile switches, and other electronic components, providing customers with a broad selection of connection products. In wireless communications and smart-device applications, Kinghelm also offers GPS antennas, Wi-Fi antennas, BeiDou antennas, 4G antennas, internal antennas, and ceramic antennas. Its product range further covers automotive wiring harnesses, adapter cables, RF cables, sensors, millimeter-wave products, and related components. These products serve a variety of applications, including communications equipment, automotive electronics, consumer electronics, smart terminals, and industrial equipment. From a small connector to a wireless communication antenna inside an electronic device, Kinghelm is committed to providing practical and reliable products that help customers solve real-world connection and transmission challenges. For more information about Type-C, SMA, IPEX, RF connectors, antennas, and other electronic components, please visit the Kinghelm official website: www.kinghelm.net KH-A42002-2X5AView Product Details

The SMB connector holds a narrow but busy position in radio-frequency hardware. It is the interface selected when board area, assembly speed and stack height matter more than frequency reach. Radio modules, set-top boxes, cameras and navigation receivers all depend on it, and most of those products buy the same SMB connector from two or three sources at once. Wide adoption plus shared supply is why engineering and purchasing need one common reference. This article sets out what the part is and where it came from, then covers the defining features, the numbers that decide fit, the roles it fills, the applications, and how suppliers are qualified. What Is an SMB Connector? SMB stands for SubMiniature version B, a compact coaxial interface built for paths where a threaded coupling would be too slow and too tall. An SMB connector joins a cable or a circuit board to its mating half by push-on friction, so the operator closes it with axial force and needs no tooling whatsoever. The family is fixed by the international standard IEC 61169-10, which sets the interface sizes each maker must copy so that parts from separate factories fit together. Holding force comes from spring pressure between metal rings rather than from thread engagement. The usable frequency ceiling of an SMB connector therefore sits below what a fine-threaded interface can sustain. The SMB connector is specified for board-to-cable and module links in the low gigahertz band, where a fast, repeatable joint is worth more than extra margin. Two impedance systems exist across the wider family, and that one fact causes more buying errors than everything else combined. The Development History of the SMB Connector Coaxial links came out of radar hardware during the war. The first fine-threaded designs were made for lab benches, not for products built in large numbers. As communications gear spread through the 1960s and 1970s, factories needed smaller joints they could fit fast to crowded boards. The subminiature series, and the SMB connector inside it, grew directly from that pressure. The SMB connector took the same logic one step further, keeping miniature coaxial geometry while abandoning the thread completely and surrendering some pull-out strength and some frequency margin in return for speed and a far shorter stack. Later standardisation gathered those sizes into a single document so that rival plants could build parts that mate. That is why a buyer today can compare makers on paperwork, consistency and delivery rather than on shape, and an engineer can likewise plan a second source without redrawing the board. Characteristics of an SMB Connector Four characteristics explain most decisions taken around an SMB connector, and each one places an obligation somewhere else in the product. Push-on coupling. Mating and unmating run along one axis, which removes torque tooling from the process but also stops the joint pulling itself square. Short stack. Board-mount versions of the SMB connector stand only a few millimetres over the laminate, allowing housings that a threaded jack and its wrench space would rule out. Flange and legs. A square flange with grounding legs gives the part one seating plane and resists the twist made when a cable head lands off-centre. Reversed gender. The board-side jack in this family often carries the centre pin rather than the socket, which surprises engineers coming from other series. Because an SMB connector has no thread, alignment has to be finished before contact, so the housing cutout and the cable approach both need planning. The compact profile that makes an SMB connector useful also limits what can sit behind it. Catching that trade early avoids the expensive discovery that the board is right while the shell is not. Parameters of an SMB Connector: What to Confirm Before Purchase Mechanical parameters appear on the published drawing and can be compared line by line between sources. For the Kinghelm KH-SMB-Z board jack these are fixed values: a 3.7 mm interface diameter, a 0.9 mm centre contact, 11.5 mm overall length, an interface 6 mm above the seating plane, a 6.0 mm square flange, and four 0.9 mm square legs on a 4.2 x 4.2 mm pattern. The housing is gold-plated brass, the insulator is PTFE, the inner conductor is gold-plated HPb59-1 brass, general tolerances follow IT12, and the materials meet RoHS. Electrical numbers behave differently, and this is where a buying file most often goes thin. Characteristic impedance, frequency range, insertion loss, voltage rating, insulation resistance, cycle life and working temperature decide whether an SMB connector suits a design. None of them can be read from a mechanical drawing or judged by how the face looks. Ask for a datasheet tied to one SMB connector part number rather than a brochure covering a whole series. The impedance question matters most, because two systems share a similar outside shape and can join by hand while reflecting signal back to the source. Roles of the SMB Connector in a Complete Assembly Inside a finished product the SMB connector does several jobs at once, and treating it as a pass-through is what brings units back. The first duty of an SMB connector is electrical, holding a controlled coaxial path from track to cable so that energy propagates instead of reflecting. Its second duty is mechanical, because the legs that close the shield bond also anchor the part against every insert and pull the product meets in service. A third duty is organisational rather than physical, because a fixed interface lets a team divide work between board layout, housing design and cable build without arguing about shape at each handover. A standard SMB connector also lets purchasing approve an alternative source without reopening the mechanical design. Where those lines stay informal, the SMB connector becomes the place unresolved disagreements collect. Applications of SMB Connectors The applications listed below follow directly from the characteristics described above. Wireless modules and IoT gateways use the interface for antenna and test links on crowded boards built in volume. Set-top boxes and video equipment have used small coaxial joints for distribution work for decades. Industrial cameras rely on them where a compact blind-mateable link speeds the line, and test instruments use the series for fixture connections that hands cycle many times a day. Car infotainment and telematics boards are a growing share, since a push-on joint removes a torque step from an already automated process. Navigation receivers and in-car antenna feeds follow the same reasoning when they specify an SMB connector. What binds these applications together is not frequency performance but repetition, since the SMB connector is specified where ten thousand ordinary builds matter more than one record-setting one. Manufacturers of SMB Connector Products and How to Qualify One Known international suppliers and many specialist Asian factories both build to this fixed interface, which is why the SMB connector is so often dual-sourced. A search for SMB connector supply will show the large component groups that wrote much of the coaxial catalogue, next to focused plants whose whole trade is board-mount RF parts and matching cable sets. Comparing them on the interface alone tells you nothing, because the interface is exactly what they all share. Qualification achieves considerably more when it is directed at the genuine differences, so ask for a datasheet on one part number rather than a sheet for a family. Confirm which impedance system the part belongs to, and how that determination was checked and documented. Establish whether RoHS statements, material certificates and batch records can truly be produced on request, and how long delivery holds once an order lands. Then look at the detail that sets switching cost: leg pattern, flange size and centre pin shape against what already runs in production. Those three decide whether a change is a form to file or a board to redo. Kinghelm KH-SMB-Z as a Board-Mount SMB Connector The KH-SMB-Z is Kinghelm's vertical board-mount jack with a centre-pin face, meant for designs that want a tool-free joint rather than a threaded one. Its square flange and four legs give the build one seating plane and one direction. That is the practical difference between a part that survives years of unplugging and one that slowly works its own joints loose. Full SMB connector sizes, materials and tolerance class appear above, and further documents are available on request. Related reading from this site: the SMB cable assembly guide covers cable-side choice and build, while the article on SMA to SMB adapters shows how these faces meet other families. For board-level fitting detail, including leg shape, shell clearance and rework practice, see the SMB board-mount jack installation guide. Conclusion An SMB connector is easy to specify and easy to specify wrongly, because a fixed interface hides the choices that matter most. The mechanical drawing is public and comparable, but the electrical proof has to be asked for, part by part. Treat impedance as a question rather than an assumption; treat leg and flange geometry as switching cost rather than minor detail; and treat SMB connector paperwork as a genuine supplier capability rather than an administrative formality. Teams that apply those three rules will find the SMB connector is one of the more forgiving parts on a board. Teams that skip them will find it is the cheapest item on the assembly and the dearest line on the returns sheet.

In electronic equipment, power modules, industrial control systems, and wiring harness applications, connectors play an important role in ensuring stable electrical connections and efficient assembly. When an application requires a combination of current capacity, voltage rating, compact multi-pin configuration, and reliable PCB mounting, selecting the right wire-to-board connector becomes essential. The Kinghelm KH-A42002-2X4A is a 4.2mm pitch wire-to-board connector featuring a 2×4P, 8-pin dual-row configuration and straight-through PCB mounting. With a 7A rated current and 600V rated voltage, together with brass tin-plated contacts and a PA66 insulating housing, this connector provides a practical solution for PCB and wire harness interconnection in a wide range of electronic applications. Kinghelm KH-A42002-2X4A Product Image 4.2mm Pitch and 8-Pin Dual-Row Design for Efficient PCB Connections The Kinghelm KH-A42002-2X4A is a plug-in wire-to-board connector designed for direct PCB mounting. It features a 2×4P configuration, with two rows and four pins per row, for a total of eight contacts. The 4.2mm pitch provides a balanced combination of connection density, insulation spacing, and mechanical accessibility. The straight-through mounting structure makes the connector suitable for through-hole PCB assembly and allows wires or harnesses to be connected to the board in an organized manner. This configuration can be particularly useful in power boards, industrial control equipment, electronic modules, automation systems, and other applications requiring multiple electrical connections within a relatively compact area. The connector has a 12.8mm Z-axis board height and an 11.4mm Y-axis board-side width. These dimensions provide useful reference information for PCB layout and mechanical enclosure design. For engineers developing new electronic products, considering connector height and board footprint during the early design stage can help improve overall assembly efficiency. The transparent housing also provides convenient visual identification of the connector structure and pin arrangement, which can be helpful during assembly, inspection, and maintenance. 7A Rated Current and 600V Rated Voltage for Power and Control Applications Electrical performance is one of the key factors when selecting a wire-to-board connector. The Kinghelm KH-A42002-2X4A is rated for 7A current and 600V AC/DC, making it suitable for various power and control connection applications when the system operating conditions are within the specified limits. The contacts are manufactured from brass and tin-plated to provide a reliable conductive interface while supporting practical PCB assembly and soldering processes. According to the product specifications, the connector has a maximum contact resistance of 20mΩ and a minimum insulation resistance of 1000MΩ. The connector also provides a 1500V AC/1 minute withstand voltage rating, offering an important electrical insulation specification for equipment designers and engineers. For actual applications, however, the appropriate operating current and voltage should always be evaluated together with wire size, PCB copper thickness, ambient temperature, connector temperature rise, duty cycle, and other system-level factors. The rated values should be used as engineering reference specifications rather than as the sole criteria for connector selection. PA66 Housing and UL94V-2 Flammability Rating Material selection has a direct impact on the mechanical and electrical performance of a connector. The KH-A42002-2X4A uses PA66 as the insulating housing material and features a UL94V-2 flammability rating. PA66 is widely used in electrical and electronic components because of its mechanical strength and heat resistance. The specified operating temperature range of this connector is -25°C to +85°C, covering many common indoor electronic equipment, industrial control, power supply, and automation applications. The brass contacts are tin-plated, providing a practical contact material configuration for general electrical interconnection. Combined with the PA66 housing, the connector is designed to provide a stable mechanical structure and electrical interface for PCB-to-wire applications. For engineers and purchasing teams, these specifications make the KH-A42002-2X4A a useful option when looking for a 4.2mm pitch PCB connector, 8-pin wire-to-board connector, 7A connector, or 600V connector. Kinghelm KH-A42002-2X4A Specification Kinghelm KH-A42002-2X4A for PCB and Wire Harness Interconnection Overall, the Kinghelm KH-A42002-2X4A wire-to-board connector combines a 4.2mm pitch, 2×4P dual-row configuration, 8 total pins, straight PCB mounting, 7A rated current, and 600V rated voltage in one practical connector design. Its brass tin-plated contacts, PA66 insulating housing, UL94V-2 flammability rating, and -25°C to +85°C operating temperature range provide engineers with key specifications for evaluating the connector in electronic equipment and wiring applications. The KH-A42002-2X4A can be considered for applications such as power supply boards, industrial control systems, automation equipment, electronic modules, PCB assemblies, wiring harnesses, and other wire-to-board interconnection applications where the specified electrical and mechanical conditions are suitable. When selecting a connector, engineers should consider not only the rated current and voltage, but also pitch, number of pins, PCB mounting method, board height, wire specifications, operating temperature, insulation requirements, and available installation space. If you are looking for a 4.2mm pitch wire-to-board connector, 8-pin PCB connector, 7A wire-to-board connector, or 600V connector, the Kinghelm KH-A42002-2X4A can be evaluated according to your specific application requirements. About Kinghelm Kinghelm (www.kinghelm.net) is engaged in the design, manufacturing, sales, and technical services of wireless signal transmission and reception products, electronic signal connectors, and interconnect system products. It has long provided stable and reliable components and selection support for consumer electronics, industrial control, automotive electronics, smart home, and other fields. Kinghelm has a rich product line, covering push-button switches, micro switches, multi-function switches, illuminated switches, DIP switches, toggle switches, as well as connection and interface solutions such as earphone jacks, DC jacks, FPC connectors, USB connectors, and waterproof USB. It also provides detection switches, limit switches, encoder switches, tactile push buttons, Type female sockets, Type-C interfaces, joystick switches, five-key switches, thumbwheel switches, etc., to meet diverse operation and signal transmission needs. For high-density mounting and complex working conditions, Kinghelm also offers SMD detection switches, vertical detection switches, through-hole detection switches, and SMD encoder switches, balancing sensitivity, service life, and waterproof and dustproof performance. From smart wearables and home appliance control boards to industrial equipment and automotive modules, Kinghelm continuously optimizes materials and structures to ensure that every press, insertion/removal, and detection is stable and reliable. Whether for selection and prototyping or volume delivery, Kinghelm helps customers quickly bring projects to market with quality, delivery, and technical service. KH-A42002-2X4AView Product Details

Wire-to-board connectors are mainly used to establish electrical connections between wires and PCBs. They offer easy installation, reliable connections, and convenient maintenance, making them widely used in power equipment, industrial control systems, household appliances, lighting equipment, and other electronic products. Depending on application requirements, wire-to-board connectors are available in different pin configurations, pitches, mounting methods, and electrical specifications. Kinghelm KH-A42002-2X3A is a through-hole wire-to-board header featuring a 2×3P configuration, 4.2mm pitch, and 6-pin straight-through-hole design. It has a rated current of 7A, a rated voltage of 600V, and an operating temperature range of -25°C to +85°C. The connector uses PA66 insulation material with a UL94-V2 flammability rating, while the terminals are made of brass with tin plating. The overall dimensions include a 12.8mm height above the PCB and an 11.4mm bottom width along the Y-axis, making it suitable for various wire-to-board connection applications. Kinghelm KH-A42002-2X3A Product Image 2×3P Configuration for Multi-Circuit Connections The KH-A42002-2X3A features a dual-row 6-pin configuration, with three pins in each row and a 4.2mm pitch. This design allows multiple circuits to be connected within a relatively compact PCB area while maintaining a clear and organized pin arrangement. The connector uses a through-hole mounting method. Its pins can be inserted directly into the corresponding PCB holes and then soldered in place. This mature installation method provides a stable mechanical connection and is suitable for mass production of electronic equipment. 7A Rated Current for Power Connection Applications The KH-A42002-2X3A has a 7A rated current and supports both AC and DC current transmission. Its rated voltage is 600V AC/DC. In addition, the connector features a maximum contact resistance of 20mΩ, a minimum insulation resistance of 1000MΩ, and a withstand voltage of 1500V AC for one minute. These electrical specifications make the connector suitable for a variety of conventional electronic equipment. In practical applications, the actual current-carrying capacity should also be considered together with factors such as operating temperature, wire size, PCB design, and the surrounding environment. PA66 Material and -25°C to +85°C Operating Temperature The connector housing is made of PA66 material with a UL94-V2 flammability rating. The pins are made of brass and feature a tin-plated surface finish. The operating temperature range is -25°C to +85°C, covering the requirements of many conventional electronic devices. The transparent housing provides a simple appearance and can be combined with different PCB and wire harness designs. Kinghelm KH-A42002-2X3A Specification Applications With its 4.2mm pitch, dual-row 6-pin configuration, and 7A rated current, the Kinghelm KH-A42002-2X3A can be used for wire-to-board connections in power equipment, industrial control systems, household appliances, lighting equipment, and other electronic devices. For applications requiring a stable connection between a PCB and wire harness, while also having specific requirements for current capacity, mounting method, and installation space, the KH-A42002-2X3A can be selected according to the actual operating voltage, current, temperature, and available PCB space. Overall, the Kinghelm KH-A42002-2X3A adopts a proven through-hole design combined with a 4.2mm pitch, 6-pin dual-row configuration, and 7A rated current, providing a practical solution for a wide range of wire-to-board connection applications. About Kinghelm As a professional brand specializing in electronic components and connection solutions, Kinghelm has been deeply engaged in the fields of connectors, wire harnesses, switches, and RF components for many years. With a comprehensive product portfolio, Kinghelm provides solutions for a wide range of applications, including consumer electronics, automotive electronics, communication equipment, industrial control, smart home systems, and medical electronics. Kinghelm offers high-frequency and high-speed connectivity solutions such as Type-C, SMA, IPEX, MCX, and HDMI connectors. Its product portfolio also covers automotive wire harnesses, adapter cables, pin headers, terminals, RF cables, antennas, electronic components, sensors, and millimeter-wave devices, providing reliable support for signal transmission, power connections, and sensing applications. In the switch category, Kinghelm offers a wide range of products, including tactile switches, detection switches, toggle switches, push-button switches, micro switches, multifunction switches, illuminated switches, DIP switches, and rocker switches. The product portfolio is further complemented by interface components such as headphone jacks, DC power jacks, FPC connectors, USB connectors, and waterproof USB connectors. Whether the application requires miniaturization, high reliability, water and dust resistance, high-frequency and high-speed transmission, or automotive-grade performance, Kinghelm places strong emphasis on quality control and consistent delivery. The company supports product selection, samples, volume supply, and customized services, providing customers with one-stop electronic connection and switching solutions that help make product design more efficient and procurement more convenient. KH-A42002-2X3AView Product Details

In industrial control systems, smart devices, power equipment, and various electronic products, connectors play an important role in electrical connection and signal transmission. For applications that require a combination of current-carrying capability, connection stability, and convenient installation, a well-designed and reliable connector can help improve the overall connection performance of the equipment. The Kinghelm KH-A42002-2X2A wire-to-board connector features a 2×2P pin configuration, 4.2mm pitch, and a rated current of 7A, making it suitable for a variety of PCB connection applications. KH-A42002-2X2A Product Specifications The KH-A42002-2X2A is a 4-position wire-to-board header featuring a 2×2P pin configuration, with two rows and two pins per row. It adopts a through-hole mounting design with a 4.2mm pitch. The connector is rated for 7A AC/DC current and 600V AC/DC voltage. Its contacts are made of brass with tin plating, while the insulating housing is made of PA66 with a UL94-V-2 flame-retardant rating. The operating temperature range is -25°C to +85°C. The maximum contact resistance is 20mΩ, minimum insulation resistance is 1000MΩ, and dielectric withstand voltage is 1500V AC/minute. The connector has a board height of 12.8mm along the Z-axis and a base width of 11.4mm along the Y-axis. It is supplied in bag packaging. Kinghelm KH-A42002-2X2A Product Image 1. 4.2mm Pitch Design for Reliable and Convenient Installation The KH-A42002-2X2A features a 4.2mm pitch design, providing sufficient spacing between contacts while maintaining a compact overall structure. This design helps facilitate PCB layout and assembly. The 2×2P configuration provides four connection points, making it suitable for electronic devices that require multiple electrical connections. The connector uses a through-hole mounting design and can be directly installed on a PCB and secured through soldering. Compared with some surface-mount structures, the through-hole design provides a straightforward installation method and reliable mechanical fixation, making it suitable for electronic equipment requiring stable board-level connections. 2. 7A Rated Current for Various Electrical Applications Current-carrying capability is an important consideration when selecting a connector. The KH-A42002-2X2A is rated at 7A and supports both AC and DC current transmission. It can be used for internal power connections and other electrical connection applications that require a moderate current-carrying capacity. The connector has a rated voltage of 600V AC/DC. Subject to the actual application conditions and relevant design requirements, it can be used in power equipment, industrial control systems, and various electronic products. During actual product design, the allowable operating current should also be evaluated based on factors such as wire size, PCB layout, ambient temperature, and installation conditions. 3. Brass Contacts with Tin Plating for Stable Conductivity The contacts of the KH-A42002-2X2A are made of brass and finished with tin plating. Brass provides good electrical conductivity and mechanical strength, meeting the basic requirements for connector contacts in terms of electrical performance and structural durability. The tin-plated surface also helps provide suitable solderability and surface protection. In terms of electrical performance, the connector features a maximum contact resistance of 20mΩ and a minimum insulation resistance of 1000MΩ. It also provides a dielectric withstand voltage of 1500V AC/minute, making it suitable for a range of electronic equipment requiring reliable conductivity and insulation performance. 4. PA66 Insulating Material for Standard Operating Environments The insulating housing is made of PA66 and features a UL94-V-2 flame-retardant rating. PA66 provides good mechanical strength and heat resistance, making the connector suitable for various common electronic and electrical applications. The operating temperature range is -25°C to +85°C, covering many applications such as industrial control equipment, smart devices, instrumentation, and general electronic products. The connector is available in a transparent color. Its 12.8mm board height along the Z-axis and 11.4mm base width along the Y-axis can provide useful dimensional references for PCB layout, mechanical clearance, and internal equipment design. 5. Suitable for Various PCB Wire-to-Board Applications As a wire-to-board connector, the KH-A42002-2X2A is primarily designed to establish electrical connections between wires and PCBs. Its 4-position 2×2 arrangement provides a compact solution for multiple electrical connections, while the 4.2mm pitch facilitates PCB layout and assembly. The connector can be used in a variety of applications, including industrial control equipment, power modules, smart electronic devices, instrumentation, household appliances, and internal wiring systems. For applications requiring through-hole mounting, a 4.2mm pitch, and a 7A rated current, engineers can evaluate the KH-A42002-2X2A according to the electrical and mechanical requirements of the specific product. Kinghelm KH-A42002-2X2A Specification Conclusion The Kinghelm KH-A42002-2X2A is a 4.2mm pitch wire-to-board connector featuring a 2×2P pin configuration, 7A rated current, and 600V rated voltage. With brass contacts, tin plating, a PA66 insulating housing, and a through-hole mounting design, it provides a practical solution for various PCB wire-to-board connection applications. With its compact 2×2P configuration, clearly defined electrical specifications, and convenient through-hole installation, the KH-A42002-2X2A can be used in industrial control systems, power equipment, smart electronic products, and other devices requiring reliable wire-to-board connections. About Kinghelm Kinghelm (www.kinghelet.net) specializes in the design, manufacturing, sales, and technical services of wireless signal transmission and reception products, electronic connectors, and interconnection systems. Our product portfolio includes switches and interfaces such as limit switches, coding switches, tactile switches, Type-C interfaces, joystick switches, detection switches, and coding switches; connectors such as Type-C, SMA, IPEX, MCX, and HDMI; as well as wire harnesses and RF antenna products, including automotive wiring harnesses, adapter cables, pin headers, terminals, RF cables, antennas, GPS antennas, and RF coaxial connectors. With a comprehensive product portfolio, Kinghelm provides solutions for position detection, signal switching, charging and data transmission, HD audio and video, high-frequency connectivity, wireless communication, and GPS positioning. Our products are widely used in automotive electronics, industrial control, smart home, communication equipment, security monitoring, and consumer electronics. Kinghelm is committed to reliability and consistency, providing product selection support, supporting services, and fast response to help customers achieve smaller, faster, and smarter devices. KH-A42002-2X2AView Product Details

In wireless communication, RF testing, electronic equipment, and high-frequency module applications, the available installation space inside a device is often limited. Conventional RF cable assemblies may be difficult to install in compact equipment due to their size and routing requirements. To meet the connection needs of compact electronic devices, Kinghelm offers the KH-SSMAK-SSMAK-RG178-60MM RF Cable Assembly. This assembly features SSMA female connectors on both ends and flexible RG178 coaxial cable with a total cable length of 60mm. Its compact construction and flexible routing make it suitable for short-distance, high-frequency signal connections in space-constrained equipment. Product Description: SSMA female to SSMA female RF Cable Assembly, using brown RG178 coaxial cable with a cable length of 60mm. Brand Name: Kinghelm Part Number: KH-SSMAK-SSMAK-RG178-60MM Packaging: Bag Gross Weight: 7.3g The overall RF Cable Assembly is compact and easy to install and route inside equipment with limited space. It can be used for RF modules, communication modules, testing equipment, and other applications requiring short-distance high-frequency signal connections. Kinghelm KH-SSMAK-SSMAK-RG178-60MM Product Image SSMA Female Connectors for Compact RF Connections The KH-SSMAK-SSMAK-RG178-60MM RF Cable Assembly features SSMA female connectors with female contacts on both ends. Both connectors are straight-type and gold-plated, providing a compact connection solution for compatible SSMA RF interfaces. SSMA connectors are suitable for applications where a small form factor and reliable RF connection are required. Their compact design makes them suitable for wireless communication equipment, RF modules, high-frequency electronic devices, test instruments, and other space-constrained systems. With SSMA female connectors on both ends, this RF Cable Assembly can be used to connect compatible SSMA interfaces directly. The integrated cable assembly can simplify connections between RF modules and reduce the need for additional adapters in suitable applications. Flexible RG178 Coaxial Cable for Easy Installation The RF Cable Assembly uses brown RG178 coaxial cable with an approximate outer diameter of 1.8mm. The slim and flexible cable construction makes it suitable for internal wiring and short-distance RF signal connections in electronic equipment. The 60mm cable length is designed for applications where two RF interfaces are located relatively close to each other. Compared with longer cable assemblies, the short cable length helps reduce excess wiring inside compact equipment and allows a cleaner internal layout. The flexible RG178 coaxial cable can also be routed according to the internal structure of the device, making the assembly convenient for connections between PCBs, RF modules, wireless communication modules, and other high-frequency components. Black Heat-Shrink Tubing for Added Protection The KH-SSMAK-SSMAK-RG178-60MM RF Cable Assembly is equipped with black heat-shrink tubing measuring approximately OD 2.5 × 1.5mm. The heat-shrink tubing covers the corresponding connection area, helping protect the cable assembly while providing a neat and organized appearance. In compact electronic equipment, proper cable routing and connection protection are important during installation and assembly. The heat-shrink tubing helps keep the connection section compact and organized, making the RF Cable Assembly convenient for equipment installation, testing, and production. 750V Withstand Voltage The KH-SSMAK-SSMAK-RG178-60MM RF Cable Assembly has a withstand voltage of 750V and can be used in electronic equipment and RF connection applications that meet the corresponding electrical requirements. When selecting an RF Cable Assembly for a specific application, users should consider the operating voltage, operating frequency, impedance, connector specifications, installation conditions, and other system requirements. For applications with specific RF performance requirements, the complete system specifications should be evaluated before use. Factors such as operating frequency, cable length, connector matching, installation method, and operating environment may affect the actual performance of an RF Cable Assembly. Designed for Short-Distance High-Frequency Signal Connections With its compact SSMA connectors, flexible RG178 coaxial cable, and 60mm cable length, the KH-SSMAK-SSMAK-RG178-60MM RF Cable Assembly can be used in a variety of short-distance RF signal connection applications. Typical applications include wireless communication equipment, RF modules, high-frequency electronic modules, RF testing equipment, test fixtures, PCB-to-module connections, and other electronic devices requiring compact RF interconnections. For compact communication equipment and electronic instruments where internal installation space is limited, this RF Cable Assembly provides a practical way to connect compatible SSMA interfaces while keeping the internal wiring short and organized. Compact Construction for Space-Constrained Equipment One of the key features of this RF Cable Assembly is its compact overall construction. The combination of small SSMA connectors and slim RG178 coaxial cable allows the assembly to occupy relatively little space compared with larger RF cable solutions. The 60mm cable length is particularly suitable for short-distance connections between closely positioned components. In equipment where internal space is limited, a properly sized RF Cable Assembly can help simplify cable routing and reduce unnecessary cable loops. This makes the product suitable for applications where both connector compatibility and installation flexibility are important considerations. Kinghelm KH-SSMAK-SSMAK-RG178-60MM Specification Bag Packaging for Convenient Storage and Use The KH-SSMAK-SSMAK-RG178-60MM RF Cable Assembly is supplied in bag packaging, with a gross weight of approximately 7.3g. The clearly defined part number and product specifications make it convenient for identification, storage, research and development, testing, assembly, and production applications. Overall, the Kinghelm KH-SSMAK-SSMAK-RG178-60MM is a compact SSMA Female to SSMA Female RF Cable Assembly designed for short-distance, high-frequency signal connections. It features SSMA female connectors with female contacts on both ends, straight gold-plated connectors, and flexible brown RG178 coaxial cable. With a 60mm cable length, approximately 1.8mm cable outer diameter, OD 2.5 × 1.5mm black heat-shrink tubing, and 750V withstand voltage, this RF Cable Assembly is suitable for compact electronic equipment where space, cable routing, and connector compatibility are important considerations. Depending on the specific interface and technical requirements, the KH-SSMAK-SSMAK-RG178-60MM can be considered for wireless communication modules, RF testing equipment, high-frequency electronic modules, PCB-to-module connections, test fixtures, and other short-distance RF signal interconnection applications. About Kinghelm According to Song Shiqiang, Kinghelm’s top 20 best-selling products cover Type-C and HDMI connectors, automotive wiring harnesses, adapter cables, pin headers, terminals, and other categories. The company also has strong capabilities in RF coaxial connectors such as SMA, IPEX, and MCX, as well as RF cables and antennas, including GPS antennas. Among them, KH-IPEX-K501-29 has sold more than 200,000 units and has been featured on the LCSC homepage, while KH-SMA-K513-G has appeared on the homepage best-selling list multiple times. KH-TYPE-C-16P is one of Kinghelm’s top-five best-selling Type-C horizontal SMT female connectors. Other consistently popular products include KH-SMA-KE-Z, KH-SMA-KWE17-G, KH-MMCX-Z, KH-3216-A35, KH-IPEX4-2020, KH-RJ45-58-8P8C, and KH-RCH56-8P8C-D. These products are widely used in communications, consumer electronics, automotive electronics, and IoT applications. Leveraging its strengths in R&D, quality, and supply chain management, Kinghelm focuses on independent innovation and domestic alternatives, continuously expanding its product portfolio and earning market recognition with a diverse range of best-selling products. KH-SSMAK-SSMAK-RG178-60MMView Product Details

In high-frequency electronic equipment, wireless communication modules, and various RF systems, cables may be relatively small components, but they play an important role in stable signal transmission and efficient internal device layout. This is especially true for compact electronic devices, where conventional RF cables with larger dimensions can be limited by installation space, bending radius, and connector orientation. For applications that require short-distance, high-frequency signal transmission within a confined space, a compact RF coaxial cable with flexible connector configurations can make equipment design and assembly more convenient. Kinghelm KH-SSMAJW-SSMAK-RG1.37-60MM Product Image 1. Product Specifications Brand: Kinghelm Model: KH-SSMAJW-SSMAK-RG1.37-60MM Product Type: RF Coaxial Cable Cable Length: 60 mm Coaxial Cable: RG1.37 black coaxial cable Cable Outer Diameter: Approx. 1.3 mm One-End Connector: SSMA female, female contact (socket), straight type, gold-plated Other-End Connector: SSMA male, male contact (pin), right-angle type, gold-plated Heat-Shrink Tubing: OD 2.5 × 1.5 mm Tubing Color: Black Rated Voltage: 300 V Packaging: Bag 2. 60 mm Compact Design for Space-Constrained Connections The Kinghelm KH-SSMAJW-SSMAK-RG1.37-60MM RF coaxial cable is designed for compact connection applications. With an overall length of only 60 mm, it uses RG1.37 black coaxial cable and features an SSMA right-angle male connector on one end and an SSMA female straight connector on the other, resulting in a compact and space-efficient assembly. In wireless communication equipment, RF modules, test modules, embedded electronic devices, and similar products, internal installation space is often limited, while the distance between interfaces may be relatively short. Excessively long cables can make routing more difficult and may require additional looping, securing, or cable management. The 60 mm cable length is well suited to short-distance connections and allows interfaces within a device to be connected directly according to their physical positions, helping simplify assembly and cable routing. For electronic equipment designed with miniaturization and modularity in mind, a compact cable assembly can also reduce interference with surrounding components and occupy less valuable internal space. 3. SSMA Right-Angle Male and Straight Female Connectors for Flexible Installation One of the key features of this product is its combination of two different SSMA connector configurations. One end is an SSMA male right-angle connector with a male pin, while the other end is an SSMA female straight connector with a female contact. Both connectors feature gold-plated contacts. The right-angle design changes the direction in which the cable exits the connector. When space around an interface is limited, or when the cable needs to be routed along the edge of a device or parallel to a PCB, a right-angle connector can help reduce the space required for cable routing and provide greater installation flexibility. The other end uses a straight SSMA female connector for connection to a corresponding SSMA male interface. The male-to-female configuration allows the cable to be used for specific RF interconnection requirements between compatible interfaces. For R&D engineers, electronics engineers, and production technicians, selecting an appropriate connector configuration can help simplify internal RF cable routing and facilitate connections between modules. 4. RG1.37 Coaxial Cable for Compact High-Frequency Connections The cable assembly uses RG1.37 black coaxial cable with an outer diameter of approximately 1.3 mm. Compared with larger-diameter coaxial cables, the RG1.37 format provides a more compact solution for applications where internal installation space is limited. A coaxial cable typically consists of an inner conductor, dielectric insulation, and an outer shielding structure, forming a controlled transmission path for RF and high-frequency signals. Coaxial interconnection is widely used in RF modules, wireless communication equipment, and other high-frequency electronic systems. For a short 60 mm connection, the small-diameter RG1.37 cable helps minimize the physical footprint of the cable assembly while providing a practical solution for internal RF interconnection. 5. Gold-Plated Connectors for RF Interconnection Applications Both connectors are gold-plated. The SSMA female connector features a straight configuration with a socket contact, while the SSMA male connector features a right-angle configuration with a male pin. As important components in an RF signal path, connectors must provide reliable mechanical mating and stable electrical contact. Gold-plated contact surfaces are commonly used in electronic connectors to support reliable contact performance and durability in appropriate applications. The combination of SSMA connectors, RG1.37 coaxial cable, and a 60 mm overall length gives this cable assembly a compact form factor that is well suited to short-distance RF interconnections in space-constrained electronic equipment. 6. Black Heat-Shrink Tubing for Added Protection The cable assembly is fitted with OD 2.5 × 1.5 mm black heat-shrink tubing. The heat-shrink tubing is primarily applied around the transition area between the cable and connector, providing additional protection and helping reinforce the cable-to-connector interface. For electronic equipment that requires installation, adjustment, or maintenance, maintaining the structural integrity of the transition area between the coaxial cable and connector is important for reliable cable management. The black heat-shrink tubing matches the black RG1.37 coaxial cable, giving the assembly a clean and consistent appearance. Its compact size and black finish also make it convenient for organized internal cable routing. 7. 300 V Rated Voltage for Applicable Equipment Connections This model is specified with a rated voltage of 300 V. When selecting a cable for a particular application, the actual operating voltage, frequency, power level, interface specifications, and other system requirements should be considered together. The rated voltage alone should not be used to determine whether the cable is suitable for a specific RF system. For RF equipment, connector type, cable specification, connector configuration, installation dimensions, and other mechanical and electrical parameters are also important considerations. Engineers should therefore evaluate the complete system requirements when designing an RF interconnection solution. Kinghelm KH-SSMAJW-SSMAK-RG1.37-60MM Datasheet 8. Suitable for Short-Distance Connections Inside Electronic Equipment With its 60 mm cable length, approximately 1.3 mm cable diameter, and right-angle male connector, the KH-SSMAJW-SSMAK-RG1.37-60MM is particularly suited to RF interconnection applications where installation space is limited. Potential applications include wireless communication equipment, RF modules, communication terminals, test and measurement equipment, embedded electronic devices, and other products that use compatible SSMA interfaces. Depending on the specific interface layout, the cable can be used for short-distance RF connections between modules or between RF interfaces inside a device. For designs with limited PCB space or closely positioned interfaces, the 60 mm cable length can help reduce excess cable while the right-angle male connector provides greater flexibility in cable routing and allows the assembly to better conform to the internal mechanical structure of the equipment. 9. Conclusion As modern electronic equipment continues to become smaller and more highly integrated, connectors and cable assemblies must also adapt to increasingly compact internal layouts. The Kinghelm KH-SSMAJW-SSMAK-RG1.37-60MM RF coaxial cable features a compact 60 mm length, an SSMA right-angle male connector on one end, and an SSMA straight female connector on the other. It uses RG1.37 black coaxial cable to create a compact and flexible RF interconnection solution. With its combination of compact dimensions, practical connector configuration, and small-diameter coaxial cable, this cable assembly is designed with space-constrained, short-distance, high-frequency signal interconnection applications in mind. For equipment requiring internal RF cable routing, module-to-module interconnection, or short-distance RF connections between compatible SSMA interfaces, the KH-SSMAJW-SSMAK-RG1.37-60MM can be considered based on the specific interface requirements, electrical specifications, and available installation space. As electronic equipment moves toward greater miniaturization, modularization, and integration, a properly sized and appropriately configured RF cable can also contribute to more efficient internal layouts. For engineers looking for a compact SSMA interconnection solution, the KH-SSMAJW-SSMAK-RG1.37-60MM provides one option for space-constrained RF applications. About Kinghelm Kinghelm (www.kinghelm.net), has been specializing in electronic interconnection and RF products for nearly 20 years. The company offers a broad portfolio of popular and high-demand products, with key models including KH-IPEX-K501-29, KH-SMA-K513-G, KH-TYPE-C-16P, KH-IPEX4-2020, KH-RJ45-58-8P8C, KH-RCH56-8P8C-D, KH-PJ-209-SMT, KH-TYPE-C-W-16P-T, and KH-BNC50-3511. Its product portfolio covers major categories such as RF coaxial connectors, USB connectors, Ethernet connectors, and audio connectors, while also extending to Type-C, SMA, IPEX, MCX, HDMI connectors, automotive wiring harnesses, adapter cables, pin headers, terminals, RF cables, antennas, GPS antennas, Wi-Fi antennas, BeiDou antennas, internal antennas, 4G antennas, ceramic antennas, RF connectors, electronic components, sensors, DC sockets, FPC connectors, waterproof USB connectors, and more than 20 additional product categories. With a focus on stable performance and cost-effective solutions, Kinghelm's products have earned the long-term trust of more than 20,000 customers worldwide and are widely used across communications, automotive applications, industrial IoT, and other advanced technology sectors. KH-SSMAJW-SSMAK-RG1.37-60MMView Product Details

Most of the work in how to choose a connector for PCB design is finished before anyone opens a connector catalogue, which is why a connector selection checklist starts with the design rather than with a part number. Three things are usually already settled by the time the layout is frozen: the impedance and frequency the RF path has to carry, the stack height and board outline the enclosure allows, and whether anyone will need to open the unit after it ships. Treat those three as inputs rather than options. A 50 Ω path running from DC to 6 GHz points at coaxial interfaces and quietly removes ribbon, header and terminal-block families from the shortlist, whatever their unit price looks like. A 1.2 mm gap between two parallel boards is not a preference; it decides which board-to-board pitches stay realistic. If the assembly has to be serviced in the field, a permanently soldered board-to-board pair drops out long before cost is discussed. Keeping those answers in one place is what makes the checklist worth reusing. It records what the design has already decided, which leaves a candidate list small enough to compare properly. Connector Selection Criteria That Eliminate Families, In Order Once those inputs are fixed, connector selection criteria narrow the field in sequence. Running the three questions below out of order is what creates the awkward cases: a part that meets the electrical requirement, cannot be written into a purchase order cleanly, and arrives with drawings that disagree with the footprint. Signal, power, or both. The first question is what actually travels through the contact. Signal-only paths with controlled impedance lead toward coaxial families; power-only paths lead toward terminal blocks and heavier headers; mixed paths usually force a compromise on pin count or plating. This single answer typically removes half the candidates. Board-to-board, or board-to-cable. A connection that stays fixed between two boards for the life of the product belongs to the board-to-board and FFC/FPC families. One that has to route around a hinge, pass through a chassis wall, or unplug for service belongs to wire-to-board or cable-assembly territory. Leaving this question until late is expensive, because a design that assumes a pluggable harness but specifies a soldered joint is reworked on the production line rather than on paper. Current, and how often it is mated. Current sets the minimum contact size and, indirectly, the pitch. Mating frequency sets the contact geometry. A connector mated once during assembly and one mated every time a technician swaps a module are different products, even when they share a 1.27 mm pitch and the same footprint. The order matters because each answer narrows the next one. Choosing pitch first and working backwards to current is how a 0.5 mm part ends up specified for a load it cannot carry. What Survives: Connector Selection By Application After those three questions, what usually remains is one family, occasionally two. The table below is the comparison sheet worth carrying into connector selection by application. The last column is the item to have in writing before an order is raised. Family Typical pitch / interface Current Typical mating life Confirm before ordering RF / coaxial 50 Ω interface (SMA, SMB, IPEX, FAKRA), DC to 6 GHz Signal path, up to 1 A ~500 cycles (typical) Impedance, upper frequency and contact plating. KH-SMA-K513-G Board-to-board 0.5 mm (2.5 mm XH also counted here) ~0.5 A per contact ~20 to 30 cycles (typical) Stack height and alignment tolerance. KH-WB105-F20E-04L, KH-XH-11A-Z Wire-to-board 2.54 mm 3 A / 250 V ~30 cycles (typical) Wire gauge and lock retention. KH-A2504-10AW FFC / FPC 0.5 mm / 1.0 mm ~0.5 A per contact ~20 to 30 cycles (typical) Insertion direction and bend radius. KH-FFC-A0.5-10P, KH-FFC-V0.5-10P Pin and female header 1.27 mm (2.0 / 2.54 mm in the same family) 1.0 A / AC 500 V ~50 cycles (typical) Stack height and selective gold plating. KH-1.27FH-1X10P-H4.3 Terminal block / industrial 3.81 mm 8 A / 300 V, AC 2000 V/min ~50 cycles (typical) Creepage distance and terminal torque. KH-15EDGRC-3.81-10PG Pitch, current, withstand voltage, temperature range, and contact and insulation resistance figures above come from published Kinghelm datasheets. Mating life is an industry-typical reference range rather than a guaranteed specification, and is worth confirming per part number. The Connector Selection Checklist Before Samples or a PO Go Out A shortlist is not an order. The connector selection checklist below is what a purchasing file should be able to answer from supplier documents rather than from a conversation, so that incoming inspection has something to check against. Check Evidence worth filing Pitch, position count and land pattern Datasheet drawing plus a 3D or footprint file matched against your layout Stack height and alignment tolerance Dimensional drawing with tolerances, and a mated sample pair where the stack is critical Current derating Contact current rating at your operating ambient, not at 25 °C Contact resistance, insulation resistance, withstand voltage Rated values from the datasheet or a test report Plating and contact material Plating thickness and base metal stated in writing Operating temperature and reflow profile Rated range plus the recommended reflow curve Mating life and keying Rated cycles and the anti-mis-mating feature for your position count Retention and vibration Insertion and withdrawal force, plus any latch or lock detail RoHS and REACH A current declaration rather than a general statement Sample and batch consistency A sample from the production process, and the incoming inspection criteria If Board-to-Board Is What Survived Board-to-board deserves one extra step, because it is the family where the electrical and mechanical answers are decided together. The number that causes most late changes is not pitch. It is stack height tolerance. A 0.5 mm connector designed for a fixed 0.9 mm stack will not absorb 0.3 mm of accumulated PCB thickness and solder-mask variation across a panel. Alignment follows the same rule: at 20 to 40 positions on 0.5 mm pitch, a fraction of a millimetre of misalignment is enough to bend contacts on the first insertion. If board-to-board is what survived your shortlist, the guide on how to choose the right board-to-board connector covers stack height, coplanar and right-angle options in more detail. If a shortlist needs a second opinion before the layout is frozen, our engineers will review stack height, current derating and mating life against your drawing. Samples for any of the families above can be requested through the sample application page, and technical questions reach us fastest through the contact form.

In RF communication systems, wireless devices, test equipment, and various electronic products, RF cables play an important role in signal transmission and interconnection between components. A reliable and easy-to-install RF cable designed for space-constrained applications can simplify signal connections between internal modules. The Kinghelm KH-SMBJ-SMBK-RG316-60MM is an SMB male-to-SMB female RF cable assembly featuring straight SMB connectors on both ends. It uses a brown RG316 coaxial cable with a cable length of 60 mm, making it suitable for short-distance connections inside various RF devices and electronic equipment. Kinghelm KH-SMBJ-SMBK-RG316-60MM Product Image 2. Product Specifications Brand: Kinghelm Part Number: KH-SMBJ-SMBK-RG316-60MM Product Type: SMB straight male-to-SMB straight female RF cable assembly Cable Type: RG316 coaxial cable Cable Color: Brown Cable Outer Diameter: 2.5 mm Cable Length: 60 mm Rated Voltage: 500 V Male Connector: Straight SMB male connector with male pin, gold-plated Female Connector: Straight SMB female connector with female contact, gold-plated Protective Sleeve: OD 3.5 × 15 mm The KH-SMBJ-SMBK-RG316-60MM features an SMB male-to-female configuration, with straight connectors on both ends and gold-plated contacts. The cable is made of RG316 coaxial cable with an approximate outer diameter of 2.5 mm. With its compact design and 60 mm cable length, this RF cable assembly is well suited for short-distance connections between interfaces inside electronic equipment. The assembly also includes an OD 3.5 × 15 mm protective sleeve to provide additional protection around the connection area. 3. SMB Connector Design for Convenient Equipment Interconnection SMB is a compact RF coaxial connector designed for applications where space efficiency and convenient connection are important. SMB connectors are widely used in wireless communication equipment, RF modules, test instruments, electronic measuring equipment, and other compact electronic systems. The KH-SMBJ-SMBK-RG316-60MM features an SMB male connector with a male pin on one end and an SMB female connector with a female contact on the other, allowing direct connection between compatible SMB interfaces. Both connectors feature a straight configuration, providing a clean and straightforward orientation for internal cable routing. For PCB-mounted RF interfaces, wireless communication modules, and other compact electronic assemblies, a pre-assembled RF cable can simplify installation and eliminate the need for on-site cable termination. 4. RG316 Coaxial Cable for Short-Distance RF Connections The cable assembly uses brown RG316 coaxial cable with an outer diameter of approximately 2.5 mm. RG316 coaxial cable is commonly used for RF signal interconnection and is valued for its relatively small diameter, light weight, and flexibility. With a 60 mm cable length, this assembly is suitable for connecting RF interfaces located relatively close to each other inside a device. In equipment assembly, a short cable length can help minimize excess cable and keep internal wiring neat and organized. The relatively small cable diameter also makes the cable easier to route around other components in space-constrained electronic equipment. 5. Gold-Plated Connectors for Reliable Connections Both the SMB male and SMB female connectors of the KH-SMBJ-SMBK-RG316-60MM feature gold-plated contacts. Gold plating can help improve resistance to oxidation and corrosion while supporting stable electrical contact during operation. For applications involving equipment testing, debugging, maintenance, and repeated connection and disconnection, standardized SMB interfaces can make installation and servicing more convenient. The male-to-female configuration also allows the cable assembly to connect directly to compatible SMB interfaces, reducing the need for additional adapters in suitable applications. Kinghelm KH-SMBJ-SMBK-RG316-60MM Datasheet 6. Suitable for a Variety of Electronic Applications With its SMB male-to-female configuration, RG316 coaxial cable, and compact 60 mm length, the KH-SMBJ-SMBK-RG316-60MM can be used in a variety of applications, including: Wireless communication equipment RF modules Test and measurement instruments Electronic measuring equipment Signal transmission assemblies RF equipment Electronic devices with compatible SMB interfaces During research and development and testing, pre-assembled RF cable assemblies can provide a convenient way to establish connections between modules. During equipment manufacturing and assembly, engineers can select suitable cable lengths and connector configurations according to the product's mechanical layout, helping simplify installation and improve assembly efficiency. When selecting an RF cable assembly, engineers should consider factors such as connector type, cable length, operating frequency, electrical specifications, installation space, and operating environment. The KH-SMBJ-SMBK-RG316-60MM combines SMB male and female connectors with RG316 coaxial cable to provide a convenient pre-assembled solution for short-distance RF interconnection applications. 7. Selection and Installation Recommendations When using the KH-SMBJ-SMBK-RG316-60MM, the cable should be selected according to the equipment's interface type, operating environment, and specific electrical requirements. During installation, avoid excessive bending, pulling, or mechanical stress on the cable. The connector interfaces should also be kept clean to help minimize connection issues caused by mechanical damage or poor contact. For applications where two SMB interfaces are positioned relatively close to each other, the 60 mm cable length can be considered for short-distance interconnection. If the actual installation distance differs, a cable with an appropriate length should be selected according to the equipment's internal layout. Proper cable routing can help prevent unnecessary mechanical stress on the cable and connectors while keeping the internal assembly neat and organized. Overall, the Kinghelm KH-SMBJ-SMBK-RG316-60MM is an SMB straight male-to-SMB straight female RF cable assembly designed for short-distance connections. It features a 60 mm RG316 brown coaxial cable with an approximate outer diameter of 2.5 mm, gold-plated straight SMB connectors on both ends, and an OD 3.5 × 15 mm protective sleeve. With its compact design and straightforward male-to-female connection configuration, the cable assembly can be used for short-distance interconnection between RF modules, electronic components, and compatible interfaces in a variety of electronic and RF applications. About Kinghelm According to Song Shiqiang, Kinghelm’s key products include the KH-TYPE-C-16P USB connector, KH-IPEX-K501-29 RF coaxial connector, KH-RJ45-58-8P8C Ethernet connector (RJ45/RJ11), and KH-SMA-KE-Z RF coaxial connector. These products are widely used across communication, automotive, industrial control, consumer electronics, and other industries, delivering reliable performance for diverse applications. Leveraging Shenzhen’s well-established Huaqiangbei electronics ecosystem, Kinghelm has served tens of thousands of customers worldwide, providing efficient and reliable one-stop electronic interconnection solutions. Kinghelm also offers a comprehensive product portfolio covering RF connectors, electronic components, sensors, millimeter-wave components, tactile switches, detection switches, toggle switches, push-button switches, micro switches, multifunction switches, illuminated switches, DIP switches, rocker switches, headphone jacks, DC jacks, FPC connectors, waterproof USB connectors, limit switches, encoder switches, tactile push buttons, USB receptacles, and USB Type-C connectors. With flexible customization capabilities, Kinghelm provides tailored solutions for different applications and supports a wide range of precision interconnection requirements. KH-SMBJ-SMBK-RG316-60MMView Product Details

In wireless communication equipment, RF modules, test instruments, and various electronic devices, RF signals often need to be transmitted reliably between different modules and interfaces. For applications where internal space is limited and the connection distance is relatively short, a suitable pre-assembled RF cable assembly can make installation easier while keeping the overall wiring clean and organized. The Kinghelm KH-SMBK-SMBK-RG316-200MM is a pre-assembled RF cable assembly designed for these applications. It features straight SMB female connectors on both ends, RG316 coaxial cable, and a finished length of 200 mm, making it suitable for short-distance RF signal connections. Kinghelm KH-SMBK-SMBK-RG316-200MM Product Image Product Specifications Brand: Kinghelm Model: KH-SMBK-SMBK-RG316-200MM Product Type: SMB-K to SMB-K RF Cable Assembly Cable Length: 200 mm Rated Voltage: 500 V Protective Sleeve: OD 3.5 × 15 mm Connectors: Straight SMB female, gold-plated Connector Configuration: SMB female-to-female Coaxial Cable: RG316, brown Cable Outer Diameter: Approx. 2.5 mm SMB Straight Female-to-Female for Direct RF Connection The most notable feature of this product is its SMB straight female-to-female configuration, also known as SMB-K to SMB-K. When the equipment provides compatible SMB interfaces, this RF cable assembly can be connected directly without additional adapters. SMB connectors are compact and widely used in electronic equipment where installation space is limited. The straight connector design also provides a clear connection direction, making it convenient for internal module connections and equipment wiring. Compared with cutting and assembling coaxial cable on site, a pre-assembled RF cable assembly can be installed directly, saving processing time during equipment assembly and maintenance. 200mm Length for Short-Distance RF Interconnection The 200 mm finished length is designed for short-distance connections between RF modules, communication modules, PCB interfaces, and other electronic components. A suitable cable length is particularly important inside compact equipment. An excessively long cable may create unnecessary slack and make internal wiring difficult to organize, while a cable that is too short may limit installation flexibility. The 200 mm length provides a practical option for many short-distance RF interconnection applications. During installation, the cable can be routed along the structure of the equipment, helping reduce cable clutter and making future maintenance and module replacement easier. RG316 Coaxial Cable for Flexible Routing The cable section uses RG316 brown coaxial cable with an outer diameter of approximately 2.5 mm. Compared with larger coaxial cables, RG316 is relatively compact and flexible, making it suitable for equipment with limited internal space. Electronic devices often contain multiple PCBs, RF modules, power cables, and other components within a confined enclosure. A smaller-diameter RF cable can make routing and installation more convenient. The brown cable jacket also provides easy visual identification when multiple types of cables are used inside the same device. Gold-Plated SMB Connectors Both ends of the cable assembly feature straight SMB female connectors with gold-plated female contacts. The gold-plated contact surface provides good corrosion resistance and helps maintain reliable electrical contact during use. Connector quality is particularly important in RF applications, where stable connections are essential for signal transmission. Since both ends use the same SMB female connector configuration, the cable provides a simple and standardized connection solution for compatible interfaces. Users should confirm connector type and interface compatibility before installation. Protective Sleeve for Added Cable-End Protection The cable-to-connector transition area is equipped with an OD 3.5 × 15 mm protective sleeve. During equipment assembly, movement, and cable routing, the connector tail and cable junction may experience bending or mechanical stress. The protective sleeve provides additional support and protection around this area while also giving the finished cable assembly a cleaner appearance. This type of cable-end protection can be especially useful for RF cable assemblies installed inside compact electronic equipment. Kinghelm KH-SMBK-SMBK-RG316-200MM Specification Pre-Assembled RF Cable Assembly for Easier Installation One of the main advantages of a finished RF cable assembly is that it reduces the need for on-site cable processing. When using bulk coaxial cable, manufacturers may need to cut the cable, strip it, install connectors, and perform additional assembly and inspection. With the KH-SMBK-SMBK-RG316-200MM, the cable length, cable type, and connector configuration are already defined and assembled. This makes the cable convenient for prototype development, laboratory testing, equipment assembly, and production applications. For batch production, standardized RF cable assemblies can also simplify material management and make replacement and maintenance more efficient. Typical Applications The KH-SMBK-SMBK-RG316-200MM is designed for short-distance RF connection applications requiring an SMB female-to-female configuration. Typical applications may include: Wireless communication equipment RF modules Communication modules RF test equipment Electronic test instruments RF laboratory equipment PCB and module interconnection Internal equipment wiring IoT and other RF-enabled devices Before selecting an RF cable assembly, users should confirm the connector type, operating frequency, impedance, cable length, voltage, and installation environment according to the specific application requirements. If the equipment interfaces are compatible with the SMB female connectors and the 200 mm length meets the routing requirements, this pre-assembled RF cable assembly can provide a convenient solution for short-distance RF interconnection. Compact and Practical RF Cable Assembly for Electronic Equipment An RF cable assembly may look like a simple component, but connector type, cable specification, length, contact finish, and cable-end protection can all affect the installation experience. The Kinghelm KH-SMBK-SMBK-RG316-200MM RF Cable Assembly combines a straight SMB female-to-female configuration with RG316 coaxial cable in a compact 200 mm assembly. Both ends feature gold-plated SMB female connectors, while the cable uses a small-diameter RG316 coaxial cable with an OD 3.5 × 15 mm protective sleeve at the connector transition. For applications requiring RF module interconnection, internal equipment wiring, or short-distance signal connections, a standardized pre-assembled RF cable assembly can reduce on-site processing and simplify installation. With clear specifications and a ready-to-use design, the KH-SMBK-SMBK-RG316-200MM is a practical solution for compact RF interconnection applications. About Kinghelm Kinghelm(www.kinghelm.net) specializes in RF passive components, antennas, connectors, RF cable assemblies, and electronic interconnection solutions. With more than a decade of industry experience, Kinghelm serves over 20,000 customers worldwide and offers more than 8,000 SKUs for applications in communications, automotive, industrial control, IoT, and other fields.The company holds certifications including ISO 9001, ISO 14001, RoHS, and REACH, and provides both standard products and customized antenna and connector solutions, supporting customers from product development and prototyping to mass production. KH-SMBK-SMBK-RG316-200MMView Product Details

The Kinghelm KH-SMBK-SMBK-RG1.37-100MM is a finished SMB RF cable assembly, pre-assembled with SMB female connectors on both ends and a 100 mm RG1.37 coaxial cable in between. It is supplied as a ready-to-use cable assembly, eliminating the need for customers to perform connector crimping, cable cutting, or cable assembly on site. Designed for short-distance RF signal connections, this finished cable assembly combines two straight gold-plated SMB female connectors, RG1.37 black coaxial cable, and protective sleeves into one complete product. With its compact 1.37 mm cable diameter and 100 mm finished length, it is suitable for internal connections between RF modules, PCBs, communication equipment, test equipment, and other compact electronic devices. Kinghelm KH-SMBK-SMBK-RG1.37-100MM Product Image Product Specifications Brand: KinghelmModel: KH-SMBK-SMBK-RG1.37-100MMProduct Type: Finished SMB-K to SMB-K RF Cable AssemblyCable Length: 100 mmCable: RG1.37 black coaxial cableCable Outer Diameter: 1.37 mmConnector: SMB female, female contact, straight typeConnector Finish: Gold-platedRated Voltage: 300 VSleeve: OD 2.5 × 15 mmPackaging: BaggedGross Weight: Approx. 5.35 g Ready-to-Use Finished Cable Assembly Unlike loose RF connectors or bulk coaxial cable, the KH-SMBK-SMBK-RG1.37-100MM is supplied as a complete finished cable assembly. The connectors have already been assembled onto the RG1.37 coaxial cable according to the specified cable length. This finished design saves users the additional work of cable cutting, stripping, connector termination, and assembly. For equipment manufacturers, engineers, and production teams, using pre-assembled RF cable assemblies can simplify the wiring process and improve installation efficiency. The 100 mm finished length also provides a convenient solution for connecting RF interfaces located close to each other without requiring users to process the cable themselves. SMB Female-to-Female Configuration Both ends of the finished cable are equipped with straight SMB female connectors with gold-plated contacts. The two identical connectors form an SMB-K to SMB-K connection configuration. This design is suitable for connecting compatible SMB male interfaces in RF modules, circuit boards, communication equipment, and testing systems. Because the connectors are already installed, the cable can be directly used after delivery, making it convenient for equipment assembly and maintenance. Compact RG1.37 Coaxial Cable The cable assembly uses RG1.37 black coaxial cable with an outer diameter of approximately 1.37 mm. Its slim profile is particularly suitable for compact electronic equipment where internal installation space is limited. The 1.37 mm cable diameter allows the finished assembly to be routed flexibly around components and PCB layouts. Combined with the 100 mm finished length, it is well suited for short-distance internal RF connections. Suitable for Equipment Assembly and RF Applications As a ready-made RF cable assembly, the KH-SMBK-SMBK-RG1.37-100MM can be used in various applications, including: RF module-to-module connections PCB and RF module connections Internal wiring of communication equipment Wireless communication devices RF testing equipment Laboratory test setups Compact electronic equipment Short-distance RF signal connections For manufacturers purchasing RF cable assemblies in volume, a finished and standardized cable can also help simplify production processes and reduce the need for in-house cable termination. Kinghelm KH-SMBK-SMBK-RG1.37-100MM Specification Conclusion The Kinghelm KH-SMBK-SMBK-RG1.37-100MM is a compact finished SMB RF cable assembly, rather than a loose cable or individual connector. It is factory-assembled with two straight gold-plated SMB female connectors and a 100 mm RG1.37 black coaxial cable, providing a ready-to-use solution for short-distance RF connections. With its compact cable diameter, standardized 100 mm length, pre-installed SMB connectors, and lightweight construction, this finished RF cable assembly is a practical choice for electronic equipment manufacturers, RF module developers, testing applications, and other applications requiring convenient and space-efficient SMB connections. About Kinghelm Kinghelm (www.kinghelm.net) was founded by Shi-Qiang Song in Shenzhen and has been deeply engaged in the electronic components industry for many years. The company has developed a comprehensive interconnect product portfolio covering Type-C, SMA, IPEX, MCX, HDMI connectors, automotive wiring harnesses, adapter cables, pin headers, terminals, RF cables, and other interconnect products. In addition, Kinghelm offers a complete range of antenna products, including GPS antennas, Wi-Fi antennas, BeiDou antennas, embedded antennas, 4G antennas, and ceramic antennas, supported by an extensive portfolio of RF coaxial connectors and RF connector solutions. Leveraging Shenzhen's well-established electronics supply chain, Shi-Qiang Song and his team have developed and optimized a wide range of products to meet the diverse requirements of applications such as communications, automotive electronics, and the Internet of Things (IoT). From board-to-board connections in space-constrained environments, to stable signal transmission in automotive applications, and antenna solutions for various wireless terminals, Kinghelm provides practical, highly compatible product options designed to meet real-world engineering requirements. With a focus on product compatibility, connection reliability, and application-specific optimization, Kinghelm provides dependable interconnect solutions that support engineers throughout system design, wiring, assembly, testing, and debugging. KH-SMBK-SMBK-RG1.37-100MMView Product Details

Introduction Have you ever had a link that measured clean on the bench, then showed extra insertion loss or an unstable trace the moment it went into the rack? In most cases the connector is not faulty. The interface is simply wrong for the job. Core answer: BNC is the right choice for fast mating and 75Ω video or low-GHz RF paths, while SMA is the right choice for compact 50Ω designs that run higher in frequency or face vibration. Both are standardized interfaces, so the decision is settled by impedance, frequency, space, and environment, not by brand. Who this is for: design engineers and procurement specialists selecting a coax interface for video, broadcast, test, or RF products, including anyone comparing a 75Ω BNC against a 50Ω SMA for a specific system. If your path runs above 4 GHz: skip the BNC column below and go straight to the SMA sections. Above that frequency you are really choosing between SMA and a precision interface, not between BNC and SMA. BNC vs SMA Connector: A Detailed Comparison The two interfaces were designed for different jobs. BNC was designed for repeated fast connections; SMA was designed for compact, high-frequency 50Ω work. Neither is a general upgrade over the other. BNC Connector: Fast Connection and Easy Handling A quarter turn of the bayonet lock and you are connected, which is why BNC still sits on oscilloscopes, broadcast racks and CCTV gear. BNC exists in 50Ω and 75Ω: the 75Ω version is the normal choice for video and broadcast and pairs with RG-59 or RG-6, while the 50Ω version covers general RF test and instrumentation. Bayonet parts are commonly specified at around 500 mating cycles, and Kinghelm's BNC series, 50Ω and 75Ω alike, is specified from DC to 3 GHz. Broadcast and video signal paths, where 75Ω is the system standard Test benches and lab instruments, where cables are swapped constantly Surveillance and CCTV, where field service speed decides downtime Communication test equipment If the cable gets changed more often than the design does, BNC is the right answer. 75Ω BNC connector with bayonet coupling. SMA Connector: Compact and Secure for RF Systems SMA is threaded, and it takes longer to mate on purpose. Done up to the correct torque, the joint shrugs off sustained vibration in a way a bayonet joint cannot. Standard SMA runs 50Ω and is commonly rated from DC to 18 GHz, with precision versions reaching 26.5 GHz. Torque is usually specified between 0.79 and 1.13 N·m (7–10 in·lb), and under-torquing is behind most of the intermittent contacts that only show up after the unit ships. Wireless modules and RF front ends on space-constrained PCBs Antennas and antenna feeds, including GNSS and cellular Microwave assemblies and instrumentation above 4 GHz Any joint that has to survive vibration When space, frequency or vibration is the binding constraint, SMA is the better fit. 50Ω SMA connector with threaded coupling. BNC vs SMA: Key Differences at a Glance Feature BNC SMA Practical takeaway Coupling Quarter-turn bayonet Threaded, torqued BNC for speed, SMA for certainty Interface standard IEC 60169 series MIL-STD-348 / IEC 61169 series Standardized parts intermating across suppliers Typical frequency rating Commonly 3–4 GHz depending on part; Kinghelm BNC series DC–3 GHz 18 GHz; precision to 26.5 GHz Above 4 GHz, stop considering BNC Impedance 50Ω and 75Ω 50Ω standard; 75Ω available Fix impedance before anything else Mating cycles (typical) Around 500 A few hundred to 1000, torque-dependent Match the cycle count to your service plan Cable pairing RG-59 / RG-6 (75Ω), RG-58 (50Ω) RG-58, RG-316, 0.085" semi-rigid Choose cable and connector together Size Larger, easier to grip Compact SMA for dense boards, BNC for gloved hands Vibration Moderate retention High retention Threaded for anything that moves For the full connector taxonomy and for BNC sourcing criteria, see our RF connector guide and BNC procurement guide. BNC vs SMA Connector: Factors to Consider Before Choosing Start with impedance, frequency, space and environment. Price is the last line of the comparison, not the first. Impedance and Compatibility Match impedance along the whole path: connector, cable, and equipment interface. A 75Ω BNC on a 50Ω port does not fail on contact. It raises return loss, and in video that shows up as ghosting or ringing long before the part fails. This is the mismatch we get asked about most often.BNC covers both impedances in one mechanical family, so video and RF test can share a panel design. Standard SMA is 50Ω. 75Ω SMA exists but is not the default, and availability is worth checking before it goes into a layout. Confirm connector, cable and equipment impedance together, and check gender before you order. Kinghelm's 75Ω part in this family, KH-BNC75-3511, is covered in detail below. Power Handling Capability BNC and SMA differ in geometry more than in ratings. The larger BNC body is commonly specified with higher working voltage. SMA's small dielectric and centre contact suit high frequency, but they carry less current and dissipate less heat. KH-BNC75-3511, for example, is rated 500 V RMS over DC to 3 GHz.Power handling falls as frequency rises, so ask for the derating curve at your operating frequency and rate the finished assembly rather than the connector alone. Environmental and Outdoor Suitability Indoor benches reward connection speed. Outdoor hardware rewards protection. Check the seal at the mating interface, the plating and the strain relief, not just the temperature figure.KH-BNC75-3511 is specified from −55°C to +155°C, and its housing, inner conductor and insulation are chosen to hold that range. A connector that measures well on the bench can still be the wrong part for a pole-mounted enclosure. How to Verify Before You Commit A datasheet tells you what a part should do. These four checks tell you what the assembly in front of you actually does. Impedance continuity: sweep the finished path with a TDR and confirm there is no impedance step at the connector or the termination. Insertion loss and return loss: measure S21 and S11 on the assembled cable at your highest operating frequency. The cable and termination usually dominate the result, not the connector alone. Torque: set SMA joints to the specified 0.79–1.13 N·m. A torque wrench costs less than the field failure it prevents. Mechanical retention: pull-test the crimp or solder joint, and count mating cycles if the part is serviceable in the field. Ask for S-parameter data or a test report before you release volume orders. Common BNC vs SMA Connector Selection Mistakes Two mistakes cause most of the rework we see, and both are visible before production starts. Treating 50Ω and 75Ω as interchangeable. The symptom is on screen: ghosting in video, elevated return loss everywhere else. Paying for frequency you will not use. If the design runs to 3 GHz, an 18 GHz SMA adds cost without adding margin you need. How to Choose the Right Connector Work through these in order. The answer usually falls out by the second question. What impedance does the system run? 75Ω points to BNC; 50Ω leaves both options open. What is the highest frequency in the path? Above your chosen part's rating (3 GHz for this BNC series, around 4 GHz for the interface in general), move to SMA or a precision interface. How often will the joint be connected and disconnected? Frequent access favours BNC; a set-and-forget joint favours SMA. What does the environment do to it? Vibration, moisture and temperature narrow the choice further. Then compare suppliers on specifications, mechanical construction, environmental ratings and production consistency, rather than on unit price alone. Where Does the KH-BNC75-3511 Fit? KH-BNC75-3511 is Kinghelm's 75Ω BNC female right-angle connector. The 75Ω interface keeps the transmission line matched, and the right-angle body keeps cable routing workable where panel depth is limited. Specifications, from the Kinghelm datasheet: Impedance: 75Ω Frequency range: DC–3 GHz Working voltage: 500 V RMS Operating temperature: −55°C to +155°C Locking: bayonet Compliance: RoHS Packaging: tray; gross weight 8.5 g Kinghelm lists four application areas for this part: broadcast and television, security and surveillance, communication testing, and instrumentation. The company runs an ISO 9001 quality management system and states compliance with EU RoHS and REACH; plating thickness, body material and dielectric data are stated on the part datasheet. The same body is also offered in 50Ω as KH-BNC50-3511, with identical frequency, voltage and temperature ratings. If a product family needs both a 75Ω video path and a 50Ω RF path, one connector outline can cover both, which simplifies panel design and reduces the number of spares you carry. The datasheet and a 3D model are available for layout review, and samples can be requested through the Kinghelm sample request page. What to Put in Your RFQ Six fields are enough to get quotes you can actually compare. Interface and impedance: BNC, 75Ω, female, right-angle. Highest operating frequency, plus the insertion loss and VSWR limit the design must stay inside. Expected mating cycles over the product's service life. Mounting style, termination type, and the space available behind the panel. Environment: operating temperature range, moisture, and corrosion exposure. Documentation and supply: datasheet, 3D model, plating and material statement, RoHS and REACH status, first-article samples, lead time, and whether a qualified second source is required. Final Thoughts Two numbers decide this: the impedance your system runs and the highest frequency in the path. Settle those and the connector family usually picks itself.Working on a 75Ω design now? Send us the interface and frequency range, and our engineers will come back with the part, the datasheet and a sample request link. FAQ Can I use a 75Ω BNC on a 50Ω port? Do not. The mismatch raises return loss, and in video it appears as ghosting or ringing. Keep the entire path at one impedance. Can I choose a connector just because it fits the equipment? No. Physical compatibility says nothing about impedance or frequency range, and both are on the datasheet. Check them before you approve the part. What is the frequency limit of a BNC connector? BNC is commonly specified in the low-GHz range, around 3 to 4 GHz depending on the part. Kinghelm's BNC series is rated DC–3 GHz. Above that, use SMA or another threaded interface. Can SMA be used in video systems? 75Ω SMA exists and appears in some broadcast and digital video equipment, but it is not the default. Check availability and price before designing one in.

With the continuous development of automotive electronics, in-vehicle communication, navigation and positioning, intelligent driving, and in-vehicle entertainment, the number of electronic devices and communication modules inside vehicles continues to increase. This has created higher requirements for RF signal transmission, wiring harness stability, reliability, and installation convenience. FAKRA connectors are widely used in automotive electronics due to their standardized interfaces, easy identification, and structural characteristics designed for automotive applications. They are commonly used in automotive antenna systems, GPS navigation, wireless communication, and in-vehicle entertainment systems. The Kinghelm KH-FAKRAZK-FAKRAZK-RG174-150MM is an automotive FAKRA female-to-female RG174 RF cable assembly featuring a blue Z-type FAKRA female connector at each end and a black RG174 coaxial cable in the middle. With a standard cable length of 150 mm and a compact overall structure, it is suitable for a variety of short-distance RF signal connection applications. Kinghelm KH-FAKRAZK-FAKRAZK-RG174-150MM Product Image Product Specifications Brand: Kinghelm Model: KH-FAKRAZK-FAKRAZK-RG174-150MM Product Type: RF Cable Assembly Application: Automotive Electronics / RF Signal Connection Connector Configuration: FAKRA Blue Z-Type Female to FAKRA Blue Z-Type Female Connector Type: FAKRA Female-to-Female Connector Housing Color: Blue Connector Structure: Z-Type Coaxial Cable: RG174 Cable Color: Black Cable Outer Diameter: Approx. 2.8 mm Cable Length: 150 mm Sleeving: Black Heat-Shrink Tubing Heat-Shrink Tubing Size: OD 3.5 × 15 mm Rated Voltage: 1500 V Packaging: Bag Product Weight: Approx. 11.05 g 1. Blue Z-Type FAKRA Design for Automotive RF Connections Both ends of this RF cable assembly are equipped with blue Z-type FAKRA female connectors. The connectors feature a female contact configuration and blue housings, providing clear visual identification during wiring harness assembly, equipment installation, and maintenance. FAKRA connectors are commonly used in automotive electronic systems and are suitable for applications such as automotive antennas, navigation and positioning systems, wireless communication, satellite positioning, and in-vehicle entertainment. Automotive interiors typically have limited installation space and complex electronic module layouts. A properly designed connector structure can help optimize cable routing and simplify installation. The Z-type connector design is suitable for applications where a specific connection direction is required. When the equipment interface and cable routing are positioned at an angle, the Z-type structure can help reduce excessive bending near the connector and contribute to a more organized wiring layout. The blue FAKRA housing also makes it easier to distinguish different interfaces within automotive wiring harnesses, which can help improve efficiency during assembly, inspection, and maintenance. 2. RG174 Coaxial Cable for Compact and Flexible Wiring The coaxial cable is an essential part of an RF cable assembly and is responsible for RF signal transmission. This product uses RG174 coaxial cable, featuring a black outer jacket and an outer diameter of approximately 2.8 mm. RG174 is a commonly used small-diameter coaxial cable specification. Its relatively compact size and flexibility make it suitable for electronic equipment and wiring harness applications where installation space is limited. Automotive interiors contain numerous control modules, communication modules, and antenna interfaces. RF cable assemblies therefore need to be routed according to the equipment layout and available installation space. The relatively small outer diameter of RG174 helps reduce the space occupied by the cable assembly while facilitating bending, routing, and installation. By combining FAKRA connectors with RG174 coaxial cable, this product provides a ready-to-use RF cable assembly for short-distance RF signal connections between compatible devices. 3. 150 mm Standard Cable Length for Short-Distance Connections This RF cable assembly features a standard cable length of 150 mm, making it suitable for compact, short-distance connection applications. During electronic equipment assembly, the distance between different modules can vary. An excessively long cable may create unnecessary cable slack and make wiring organization more difficult, while a cable that is too short may not reach the required connection point. The 150 mm cable length can meet the connection requirements of certain compact electronic devices and modules while facilitating standardized procurement and assembly. For applications such as R&D testing, equipment assembly, automotive wiring harness processing, and mass production, a standardized RF cable assembly can reduce the need for additional cable cutting, connector crimping, and assembly operations. 4. Black Heat-Shrink Tubing for a More Integrated Cable Assembly The connection area between the FAKRA connector and the coaxial cable is covered with black heat-shrink tubing, with a specification of OD 3.5 × 15 mm. The heat-shrink tubing covers the cable termination area and helps provide a cleaner and more organized overall appearance. During electronic equipment and automotive wiring harness assembly, the rear section of the connector generally requires appropriate protection and cable organization. The heat-shrink tubing helps create a more integrated transition between the connector and cable, contributing to the overall structure of the RF cable assembly. The black tubing matches the black RG174 coaxial cable, providing a consistent appearance suitable for automotive wiring harnesses and other black cable systems. 5. 1500 V Rated Voltage and Clearly Defined Specifications According to the product specifications, this FAKRA RF cable assembly has a rated voltage of 1500 V. For actual applications, the RF cable assembly should be selected according to the equipment's operating voltage, operating frequency, impedance requirements, and installation environment. RF cable assembly selection should not be based solely on connector type and cable length. It is also important to confirm the equipment interface specification, RF frequency range, impedance requirements, installation direction, and available space. Before bulk procurement or deployment, users are advised to verify the connector model and cable specifications according to the requirements of the actual application. 6. Applications in Automotive Electronics, Navigation, and Communication Featuring FAKRA connectors, this product is particularly suitable for automotive electronics and in-vehicle RF connection applications. Depending on the equipment interface specifications, potential applications include: Automotive antenna systems GPS navigation systems Navigation and positioning equipment In-vehicle communication modules Wireless communication equipment In-vehicle entertainment systems Automotive electronic modules Intelligent vehicle electronics RF connection and testing equipment As vehicles become increasingly intelligent and connected, the demand for communication and data transmission within vehicles continues to grow. RF cable assemblies serve as an important link between antennas, communication modules, and electronic equipment. The Kinghelm KH-FAKRAZK-FAKRAZK-RG174-150MM combines standard FAKRA connectors with RG174 coaxial cable in a compact 150 mm configuration, making it suitable for short-distance RF connections. It can also be used in electronic product R&D, testing, prototyping, and wiring harness processing, provided that the connector and electrical specifications meet the requirements of the application. Kinghelm KH-FAKRAZK-FAKRAZK-RG174-150MM Specification 7. Compact RF Cable Assembly for Easy Wiring Harness Installation The product adopts a simple and compact FAKRA connector + RG174 coaxial cable + heat-shrink tubing construction, providing a ready-to-use RF cable assembly with clearly defined specifications. Both ends use the same type of blue Z-type FAKRA female connector, allowing connection to compatible FAKRA interfaces. The 150 mm cable length helps minimize excess cable, while the approximately 2.8 mm outer diameter of the RG174 coaxial cable makes the assembly suitable for space-constrained installation environments. For electronic equipment manufacturers, automotive electronics companies, and wiring harness manufacturers, using a standardized finished RF cable assembly can reduce processes such as cable cutting, stripping, crimping, and connector assembly. This can help simplify assembly operations, improve production efficiency, and facilitate standardized production management. Conclusion Overall, the Kinghelm KH-FAKRAZK-FAKRAZK-RG174-150MM Automotive FAKRA Female-to-Female RG174 RF Cable Assembly is a compact, ready-to-use RF connection solution designed for short-distance RF signal transmission. The assembly features blue Z-type FAKRA female connectors at both ends, a black RG174 coaxial cable, a standard 150 mm cable length, and black heat-shrink tubing at the cable termination area. With its FAKRA connector configuration, compact RG174 coaxial cable, and standardized 150 mm length, this RF cable assembly is well suited for automotive electronics, in-vehicle communication, navigation and positioning, automotive antenna systems, wireless communication modules, and other related electronic equipment. Depending on the actual interface and electrical requirements, it may also be used for electronic equipment R&D, testing, prototyping, and wiring harness processing. When selecting an RF cable assembly, users are advised to consider the equipment interface type, operating frequency, impedance, operating voltage, connection direction, cable length, and installation environment to ensure compatibility with the specific application. About Kinghelm Kinghelm(www.kinghelm.net) has been deeply engaged in the RF and interconnect industry for many years. Its product portfolio covers a wide range of connectors and interconnect components, including Type-C, SMA, IPEX, MCX, HDMI, as well as automotive wiring harnesses, adapter cables, pin headers, terminals, RF cables, and other interconnect products. Kinghelm offers a comprehensive antenna portfolio, including GPS antennas, Wi-Fi antennas, BeiDou antennas, internal antennas, 4G antennas, ceramic antennas, and various other antenna products. Combined with RF coaxial connectors and RF connectors, these products provide complete signal transmission solutions for different applications. Kinghelm also offers a wide range of electronic components, including sensors, millimeter-wave products, tactile switches, detection switches, and band switches. Leveraging Shenzhen's mature electronics supply chain, Kinghelm supports diverse application areas such as in-vehicle communication, navigation and positioning, intelligent driving, industrial connectivity, and IoT equipment. The company provides reliable product support for engineers in component selection, bulk procurement, and customized wiring harness processing, helping deliver stable and efficient signal connectivity for a wide range of electronic applications. KH-FAKRAZK-FAKRAZK-RG174-150MMView Product Details