KH-1.27FH-1X10P-H4.3 Female Header: An Ideal Choice for Compact, High-Density Interconnection

As electronic products such as 5G communication equipment, smart wearables, and IoT terminals continue to evolve toward greater compactness, thinner designs, and higher efficiency, PCB-level interconnection solutions are facing unprecedented challenges: how to achieve highly reliable, high-density signal and power transmission within limited space. Kinghelm has introduced the KH-1.27FH-1X10P-H4.3 through-hole female header, featuring a fine 1.27 mm pitch, square-hole anti-rotation structure, compact 4.3 mm insulator height, and excellent electrical performance. It provides engineers with an interconnection solution that combines miniaturization with stability.

Kinghelm KH-1.27FH-1X10P-H4.3 Product Image

1. Precision Specifications for Compact Designs

The KH-1.27FH-1X10P-H4.3 is a single-row, 1×10-position female header with 10 contacts. It adopts a through-hole (DIP) mounting design, suitable for conventional wave soldering or manual soldering.

Its key advantage is the 1.27 mm pin pitch. Compared with the traditional 2.54 mm pitch, it saves nearly 50% of PCB space. At the same time, it is easier to manufacture and process than ultra-fine-pitch 0.8 mm connectors, effectively reducing the risk of cold solder joints, bridging, and other production issues in mass manufacturing. This makes it an excellent balance between compactness and manufacturing reliability for medium-density board-to-board interconnection.

The product features a square-hole structure, which distinguishes it from conventional round-hole female headers. When used with square pins, the square holes effectively prevent the pins from rotating or shifting during insertion or under vibration, ensuring consistent and precise contact positioning for each circuit. This is particularly suitable for applications involving multiple contacts and frequent mating and unmating.

The insulator height is 4.3 mm, providing sufficient mechanical support while maintaining a low-profile design for applications with limited board-to-board stacking height. It is therefore well suited to compact modular designs.

2. Robust Electrical Performance for Signal Integrity

In terms of electrical specifications, the KH-1.27FH-1X10P-H4.3 has a rated current of 1.0 A, making it suitable for low-voltage power delivery of up to 5 V/1 A as well as common digital signals such as I²C, SPI, and GPIO.

The product provides a withstand voltage of 500 VAC, an insulation resistance of ≥1,000 MΩ, and a maximum contact resistance of 20 mΩ. The extremely low contact resistance helps minimize signal loss, voltage drop, and heat generation, which is critical to long-term operational stability.

Its operating temperature range is -40°C to +105°C, enabling reliable operation in environments ranging from cold outdoor conditions to high-temperature industrial enclosures. This makes it suitable for a wide range of consumer, industrial, and certain automotive electronics applications.

3. Strong Brand Capabilities and Reliable Quality

Kinghelm is headquartered in Shenzhen, China. It is a National High-Tech Enterprise and a member of the China Satellite Navigation and Location-Based Services Association and the Guangdong Connector Association. Its technical team includes professionals with backgrounds from renowned institutions such as Tsinghua University and the University of Electronic Science and Technology of China, as well as overseas professionals with international experience.

Kinghelm operates two major manufacturing bases in Tangxia, Dongguan, and Liuzhou, Guangxi, with integrated manufacturing capabilities covering mold development, injection molding, stamping, and automated assembly. This enables the company to support high-volume production as well as customized requirements.

Kinghelm has obtained ISO 9001 quality management system certification and is currently applying for IATF 16949 automotive quality management system certification. Its products comply with UL and TÜV safety standards, as well as RoHS and REACH environmental requirements, helping facilitate exports to markets such as Europe and North America.

The KH-1.27FH-1X10P-H4.3 is packaged in tubes, with a unit gross weight of only 0.438 g. Its lightweight design facilitates automated and manual assembly while helping reduce storage and transportation costs.

4. Wide Range of Applications

Thanks to its compact dimensions, reliable contact performance, and wide operating temperature range, the KH-1.27FH-1X10P-H4.3 has broad application potential across multiple industries:

• Consumer Electronics: In smartphones, tablets, smartwatches, TWS earbud charging cases, and other highly space-constrained products, the female header can provide high-density connections between mainboards and daughterboards, sensors, batteries, displays, and other modules, supporting thinner and lighter product designs.

• Industrial Control: In compact PLCs, remote I/O modules, industrial sensor nodes, variable-frequency drives, and other equipment, the female header provides a pluggable and easy-to-maintain interconnection solution for multi-board architectures while accommodating high-temperature and vibration-prone factory environments.

• Computers and Peripherals: In server motherboards, storage devices, printers, POS terminals, network switches, and other equipment, this type of connector can be used for efficient transmission of power and low-speed signals.

• Automotive Electronics: In non-safety-critical systems such as vehicle navigation systems, LCD instrument clusters, and infotainment modules, the female header can be mated with corresponding pin headers to provide reliable board-to-board connections while supporting a -40°C to +105°C operating temperature range.
  
  

5. Quality Inspection and Reliability Assurance

Kinghelm performs rigorous incoming-material inspections and finished-product testing for each batch of KH-1.27FH-1X10P-H4.3 products, including:

• Contact Resistance Testing: Ensures that the contact resistance of each pin is ≤20 mΩ, minimizing signal attenuation.

• Insulation Resistance Testing: Measured at 500 V DC, with insulation resistance ≥1,000 MΩ to prevent leakage-related risks.

• Withstand Voltage Testing: An AC 500 V voltage is applied for one minute without breakdown or flashover.

• Mating and Unmating Force Testing: Simulates repeated mating cycles to ensure stable insertion/extraction forces and excellent contact durability.

• Environmental Reliability Testing: Includes high-temperature aging, low-temperature storage, damp-heat cycling, salt-spray testing, and other tests to ensure that product performance remains stable under harsh environmental conditions.
  
  

6. Selection and Matching Recommendations

The KH-1.27FH-1X10P-H4.3 is a single-row, through-hole, square-hole female header. For optimal mechanical mating and electrical contact performance, it is recommended to use a compatible Kinghelm 1.27 mm-pitch single-row pin header, such as the KH-1.27H series.

During installation, attention should be paid to the positioning holes and through-hole dimensions on the PCB. A recommended hole diameter is φ1.0 mm–φ1.1 mm, which helps ensure smooth pin insertion while maintaining adequate soldering strength.

For applications requiring double-row configurations, different numbers of positions, or different insulator heights, Kinghelm offers a comprehensive range of 1.27 mm-pitch female headers to meet diverse design requirements.

Kinghelm KH-1.27FH-1X10P-H4.3 Specification

Conclusion

The Kinghelm KH-1.27FH-1X10P-H4.3 female header, featuring a fine 1.27 mm pitch, square-hole anti-rotation design, compact 4.3 mm insulator height, 1 A rated current, and a wide operating temperature range, is well aligned with the industry's ongoing trends toward high-density interconnection, miniaturization, and high reliability.

Whether supporting lightweight and compact consumer electronics or stable operation in industrial control equipment, this product provides a highly competitive interconnection solution. Backed by Kinghelm's strong R&D, manufacturing, and quality-control capabilities, the KH-1.27FH-1X10P-H4.3 is more than a standardized connector—it is a reliable choice for high-quality, domestically manufactured interconnection solutions.

For samples or technical documentation, please contact the Kinghelm sales team or visit the company's official website for further support.

About Kinghelm

Shenzhen Kinghelm Electronics Co., Ltd.（www.kinghelm.net）has technical backbones from Tsinghua University and UESTC, and has introduced overseas returnee professionals. Kinghelm is able to develop highly reliable and high-performance antenna and connector products.KH series products of "Kinghelm" brand include Beidou/GPS antennas, RF adapter connectors, plug connector, electrical data connectors, terminals, and customized vehicle harnesses, industrial / medical connectors, and special antenna connectors."Kinghelm connects world", Kinghelm has grown with the development of China's Beidou industry. Starting from supplying Beidou/GPS dual mode antennas, IPEX terminals, and RF adapter cables for automotive manufacturers, Kinghelm has continuously developed products. Currently, it has a series of WiFi, Bluetooth, NB-loT, LoRa, Zigbee, UWB, and GSM antennas, RFID tags, RF adapter cables, standard microwave antennas, vehicle grade SMA, SMB, FAKRA holders, coaxial cables, and can customize non-standard antenna connectors based on customer drawings or samples.

KH-1.27FH-1X10P-H4.3View Product Details