As RF communication systems continue to evolve toward miniaturization and higher integration, connectors—serving as the critical link for signal transmission—must achieve an optimal balance between compact dimensions and electrical performance.

With years of expertise in RF connector development, Kinghelm has responded to the growing demand for miniature, reliable interconnection solutions by introducing the KH-SSMB-JE SSMB PCB Vertical Male RF Coaxial Connector. Featuring a compact 2.7 mm interface diameter, 50Ω characteristic impedance, and a wide operating frequency range of 0–6 GHz, this connector provides an efficient and reliable solution for high-density, space-constrained RF systems.

Kinghelm KH-SSMB-JE Product Image

1. 产品概述

The KH-SSMB-JE is a precision-designed SSMB series PCB vertical male RF coaxial connector from Kinghelm. It adopts a plug-in mounting structure with an SSMB male interface, a standard 50Ω impedance, and supports a frequency range of DC to 6 GHz. Each unit weighs only 0.98 g and is supplied in bag packaging.

Designed for applications where space efficiency and connection reliability are critical, the KH-SSMB-JE is ideal for scenarios such as compact communication modules, portable test equipment, and automotive electronic systems. Its miniature structure and stable RF performance provide engineers with greater flexibility in system design and PCB layout.

受支持 Kinghelm’s comprehensive quality control system, the product delivers excellent consistency, reliability, and long-term stability for mass production applications.

2.主要特点

Standard SSMB Interface with Vertical Male Structure

The KH-SSMB-JE follows the SSMB interface standard and features a vertical male connector design for accurate mating with corresponding female sockets.

插件式结构确保了可靠的机械连接，同时简化了装配程序，降低了安装复杂性，提高了生产效率。

PCB Through-Hole Mounting for Secure Board-Level Applications

The connector adopts a through-hole (DIP) mounting design, allowing the pins to be directly inserted into PCB holes and soldered securely.

与表面贴装解决方案相比，通孔结构具有更强的机械强度和更好的抗振动和抗冲击能力，使其适用于工业和汽车应用。

Wideband Performance from DC to 6 GHz

The KH-SSMB-JE maintains stable electrical performance across a broad frequency range of DC to 6 GHz, covering various applications including wireless communication, IoT devices, industrial RF systems, and test equipment.

其宽广的频率适应能力使一个连接器型号能够支持多个射频平台，从而有助于降低组件复杂性和库存成本。

Standard 50Ω Characteristic Impedance

The 50Ω impedance standard is widely adopted in RF systems. The KH-SSMB-JE maintains impedance continuity throughout the signal path, minimizing reflection loss and ensuring excellent signal integrity.

这使其适用于对射频性能稳定性要求极高的高频信号传输。

Precision Pin Design for Reliable Connection

The connector features precisely positioned pins that align accurately with PCB mounting holes. After soldering, the connector maintains excellent vertical alignment with the PCB surface.

这种设计有助于减少机械应力，防止因引脚错位造成的接触不良，并提高长期连接的可靠性。

Ultra-Compact 2.7 mm Interface Diameter

With an interface diameter of only 2.7 mm, the KH-SSMB-JE achieves outstanding miniaturization while maintaining reliable RF performance.

其紧凑的尺寸使其能够集成到空间受限的设备中，并为高密度PCB布局提供更大的灵活性。

Full Metal Construction for Mechanical and Electrical Performance

The connector features an all-metal structure, providing excellent mechanical strength and resistance to deformation.

金属外壳还提供了增强的电磁屏蔽，有效减少了外部干扰，确保了清晰、稳定的射频信号传输。

3.产品优势

Exceptional Space Efficiency for High-Density Designs

As RF systems continue to become smaller and more integrated, every millimeter of PCB space becomes increasingly valuable.

KH-SSMB-JE 具有 2.7 毫米的紧凑型接口直径和 0.98 克的超轻设计，在保持可靠的射频性能的同时，显著缩小了连接器的尺寸。

对于多通道和高密度电路设计，这种紧凑型连接器能够将更多射频通道集成到同一 PCB 区域内，或为其他关键组件腾出更多空间，从而帮助工程师实现更高的系统集成度。

Wideband Capability for Consistent RF Performance

Supporting a frequency range of DC to 6 GHz, the KH-SSMB-JE provides stable transmission performance across a wide variety of RF applications.

从 Sub-GHz 物联网通信和 5G sub-6GHz 系统到 GPS/北斗导航和 Wi-Fi 连接，该连接器可在多个频段上提供可靠的信号传输。

对于在不同射频平台上开发产品的制造商而言，一种连接器解决方案可以支持多种应用，从而简化供应链管理并降低组件选择的复杂性。

Robust Through-Hole Mounting with Excellent Vibration Resistance

The combination of a through-hole mounting structure and all-metal housing gives the KH-SSMB-JE outstanding mechanical stability.

Compared with surface-mount alternatives, through-hole mounting provides stronger resistance against pulling force, shear stress, and mechanical shock. This makes it especially suitable for applications exposed to vibration, such as automotive electronics, industrial equipment, and outdoor communication systems.

Precision Pin Alignment for High Production Consistency

The precisely engineered pin structure ensures accurate positioning during PCB assembly, improving installation efficiency and production yield.

对于需要大规模生产的制造商而言，一致的连接器尺寸和可靠的质量控制直接有助于提高生产效率和降低故障率。

可靠的质量和专业的支持 Kinghelm

作为标准产品 Kinghelm’s RF connector portfolio, the KH-SSMB-JE benefits from strict quality management, mature manufacturing processes, and stable supply capabilities.

Customers receive not only a high-performance RF connector, but also professional support throughout product selection, technical consultation, and application development.

4. 典型应用

通讯设备

In compact base stations, distributed antenna systems (DAS), repeaters, and other communication equipment, the KH-SSMB-JE can be used for board-level RF input/output connections and signal interconnections between RF modules.

Its small footprint helps improve channel density and supports more compact communication system designs.

IoT Devices and Smart Terminals

In IoT gateways, smart meters, industrial sensor nodes, and wireless modules, the KH-SSMB-JE provides reliable RF signal transmission between wireless modules and main control boards.

Its miniature size makes it highly compatible with the compact design requirements of low-power IoT products.

测试与测量设备

Portable spectrum analyzers, signal generators, field strength meters, and other RF test instruments often require compact internal interconnection solutions.

With its small size and wide frequency capability, the KH-SSMB-JE is an ideal choice for internal RF signal routing in space-limited measurement equipment.

汽车电子

Automotive RF systems such as T-BOX modules, smart antennas, and ADAS radar units require connectors with high reliability and vibration resistance.

The KH-SSMB-JE’s through-hole mounting design provides stable mechanical performance under complex automotive operating conditions, ensuring continuous and reliable signal transmission.

Satellite Navigation and Positioning Systems

GPS, BeiDou, and GLONASS multi-mode navigation modules require compact RF connectors with excellent signal integrity.

With its 50Ω impedance design and wide frequency response, the KH-SSMB-JE effectively meets the transmission requirements of satellite navigation applications.

5. 使用注意事项

Soldering Temperature and Time Control

During PCB assembly, recommended soldering processes should be followed to prevent excessive heat exposure that may affect insulation performance or cause mechanical deformation.

The soldering temperature should generally not exceed 260°C, and the heating duration should be controlled within 5 seconds.

Mating and Unmating Operation

The SSMB interface is designed with specified mating cycle performance. Excessive or improper insertion and removal should be avoided to prevent contact wear or mechanical damage.

During installation, ensure proper alignment and avoid angled insertion that may deform the connector pins.

PCB布局兼容性

When designing the PCB, customers should follow Kinghelm’s recommended specifications for mounting hole diameter, spacing, and layout requirements.

Proper PCB matching ensures secure soldering, smooth assembly, and reliable mechanical performance.

环境保护

The KH-SSMB-JE is not a waterproof or dustproof connector.

For outdoor or high-humidity environments, additional system-level protection should be implemented to prevent moisture and dust from affecting electrical performance.

储存条件

The product should be stored in a normal temperature and humidity environment free from corrosive gases.

Long-term exposure to high temperature, high humidity, or chemical contamination should be avoided to prevent oxidation of contacts and damage to surface plating.

Kinghelm KH-SSMB-JE Specification

6. 结论

As RF systems continue moving toward higher integration, smaller form factors, and increased channel density, the KH-SSMB-JE SSMB PCB Vertical Male RF Coaxial Connector provides an ideal solution combining compact design, reliable electrical performance, and robust mechanical stability.

With its 2.7 mm miniature interface, DC–6 GHz wideband capability, 50Ω impedance, and durable metal construction, the KH-SSMB-JE represents Kinghelm’s expertise and innovation in miniature RF interconnection technology.

For communication equipment manufacturers, IoT solution providers, automotive electronics developers, and test & measurement companies, selecting the KH-SSMB-JE means achieving an optimized balance between space utilization and RF performance.

From improving PCB layout flexibility and production efficiency to ensuring long-term operational reliability, this connector delivers value throughout the entire product lifecycle.

Kinghelm 公司始终致力于以客户为中心的创新和射频连接器产品组合的持续改进。作为SSMB系列的重要成员，KH-SSMB-JE可与……配合使用 Kinghelm’s other RF connector solutions to provide reliable interconnection support for a wide range of industries and help customers build more competitive RF products.

关于我们 Kinghelm

深圳 Kinghelm 电子有限公司（www.kinghelm.net）拥有来自清华大学和电子科技大学的技术骨干，并引进了海外归国专业人才。 Kinghelm 能够开发高可靠性、高性能的天线和连接器产品。KH系列产品“Kinghelm“品牌产品包括北斗/GPS天线、射频适配器连接器、插头连接器、电气数据连接器、端子、定制车辆线束、工业/医疗连接器和特殊天线连接器。”Kinghelm 连接世界” Kinghelm 随着中国北斗产业的发展而成长。公司最初为汽车制造商供应北斗/GPS双模天线、IPEX终端和射频适配器电缆， Kinghelm 公司持续开发产品。目前，公司拥有WiFi、蓝牙、NB-IoT、LoRa、Zigbee、UWB和GSM天线、RFID标签、射频适配器电缆、标准微波天线、车用级SMA、SMB、FAKRA接头座、同轴电缆等产品系列，并可根据客户图纸或样品定制非标天线连接器。

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