Release date：2025-06-19Author source：KinghelmViews：16
In RF communication and high-frequency electronic systems, connector performance plays a critical role in overall signal transmission quality. The KH-SMA-KE5.4, developed by Kinghelm, is a high-performance, precisely engineered SMA female PCB mount connector designed for a wide range of applications including wireless communication, antenna interfaces, RF modules, and test equipment. Featuring a semi-threaded, straight-through pin design, this connector is easy to install and highly reliable. With a total length of 16.8mm and a thread length of 5.4mm, it offers excellent compatibility and versatility, making it a preferred choice among engineers in high-frequency application fields.
Kinghelm KH-SMA-KE5.4 Product Image
Crafted from premium materials, the Kinghelm KH-SMA-KE5.4 SMA connector features a gold-plated brass housing for excellent conductivity and corrosion resistance, ensuring stable signal connections even in harsh environments. Its center contact is made from gold-plated HPb59-1 brass, further enhancing electrical performance while providing a secure, long-lasting mating interface. The internal insulator is made of PTFE (polytetrafluoroethylene), offering superior dielectric properties and high-temperature resistance, making it suitable for high-frequency and demanding operational conditions.
This connector complies with international RoHS environmental standards and meets lead-free process requirements, making it ideal for environmentally conscious markets such as Europe and North America. Electrically, the KH-SMA-KE5.4 features a standard 50Ω impedance, allowing effective matching with most RF devices to minimize signal reflection and loss, thereby improving overall system efficiency. With a net weight of just 2.64 grams and tray packaging, it is well-suited for mass assembly and logistics.
In terms of applications, the KH-SMA-KE5.4 SMA connector is widely used in several key sectors. In wireless communication systems—including Wi-Fi modules, cellular base stations, RFID systems, and LoRa/NB-IoT terminals—it supports low-loss signal transmission under high-frequency conditions. It also plays a critical role in navigation systems, in-vehicle antenna interfaces, and satellite receivers. Additionally, the connector is commonly used in RF testing systems, spectrum analyzers, and network analyzers, where stable connectivity, ease of mating/unmating, and long service life are essential for engineers working in lab and industrial environments.
The standardized SMA interface also ensures strong compatibility, allowing the KH-SMA-KE5.4 to be directly connected with most SMA-equipped devices on the market. This reduces both development time and costs. Moreover, its semi-threaded design offers added flexibility during installation—especially in space-constrained or performance-optimized layouts—helping enhance the overall system structure and signal integrity.
Kinghelm KH-SMA-KE5.4 Specification
In conclusion, the Kinghelm KH-SMA-KE5.4 SMA female PCB connector stands out with its superior material quality, excellent electrical characteristics, broad application adaptability, and RoHS-compliant design. Whether used in industrial communication, consumer electronics, IoT devices, or high-end testing platforms, the KH-SMA-KE5.4 provides a stable and efficient RF connection, making it an ideal solution for high-frequency applications.
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.
