KH-SSMA-KWE SSMA Right-Angle Female Connector: 6GHz High-Frequency Low-Loss Industrial-Grade Board-End RF Connector

In precision electronic fields such as RF communication, microwave testing, smart terminals, and other applications, RF coaxial connectors serve as core components for signal transmission. Their stability, accuracy, and compatibility directly determine the operating efficiency and service life of the entire system. With the ongoing development of electronic devices toward miniaturization and higher integration, traditional SMA connectors have gradually revealed limitations such as larger size and poor adaptability in compact spaces. As a result, SSMA connectors featuring a more compact structure and superior high-frequency performance have become a mainstream choice in the industry. Kinghelm has been deeply engaged in the RF connector field for many years. Relying on mature R&D capabilities and advanced manufacturing processes, Kinghelm has introduced the KH-SSMA-KWE SSMA right-angle female board-end connector, which perfectly meets the wiring requirements of miniaturized equipment. With stable electrical performance and robust structural design, it has become a preferred component for industrial communications, precision testing equipment, and IoT devices.

Kinghelm KH-SSMA-KWE Product Image

The KH-SSMA-KWE is a through-hole mounted SSMA right-angle female connector specifically designed by Kinghelm for board-end installation applications. Compared with straight-type connectors, its right-angle structure effectively avoids interference from equipment housings and surrounding components, greatly improving adaptability in compact PCB layouts. It addresses common industry challenges such as complicated wiring and inefficient space utilization found in traditional connectors. The product adopts a standard through-hole installation process, compatible with conventional PCB soldering operations without requiring special tooling equipment. It provides convenient assembly, secure attachment, and meets both large-scale industrial production requirements and manual debugging needs for small devices, making it suitable for a wide range of commercial and industrial RF applications.

Regarding key electrical specifications, the Kinghelm KH-SSMA-KWE strictly follows the 50Ω standard RF impedance design, which is the universal impedance standard widely used in commercial communication systems, microwave equipment, and testing instruments. This design effectively prevents signal reflection, excessive loss, and transmission distortion caused by impedance mismatch. The product supports a frequency range of DC–6GHz, covering the requirements of mainstream IoT communications, short-range RF transmission, and conventional microwave testing equipment. It delivers stable high-frequency transmission performance with excellent compatibility. Compared with ordinary low-quality SSMA connectors, this product maintains a voltage standing wave ratio (VSWR) of ≤1.2 (0–6GHz). The extremely low VSWR minimizes signal reflection loss, ensuring high-integrity and efficient transmission of high-frequency signals while preventing signal attenuation and interference, fully meeting the strict requirements of precision electronic devices for signal transmission accuracy.

Environmental adaptability and durability are key evaluation criteria for industrial-grade RF connectors and represent one of the major advantages of Kinghelm products over ordinary consumer-grade connectors. The KH-SSMA-KWE supports an operating temperature range of -40°C to 125°C. Its wide temperature adaptability allows it to perform reliably in harsh environments, including outdoor equipment, industrial control systems, automotive communication devices, and aerospace-related applications. Whether exposed to extremely cold temperatures or prolonged operation under high-temperature conditions, the connector maintains stable mechanical and electrical performance without issues such as poor contact or parameter drift.

In terms of insulation and conductivity performance, all specifications of this product meet high industry standards. Its dielectric withstand voltage reaches 750V, providing excellent high-voltage resistance and effectively protecting against circuit voltage fluctuations and transient voltage surges while reducing risks such as leakage and breakdown. The insulation resistance reaches 1000MΩ, offering outstanding insulation performance to prevent leakage and signal interference. Meanwhile, the contact resistance is precisely controlled, with the inner conductor resistance as low as 5mΩ and the outer conductor resistance as low as 2.5mΩ. The extremely low contact resistance significantly reduces transmission loss of current and RF signals, improving transmission efficiency while reducing heat loss and extending the overall service life of equipment.

In terms of mechanical durability, the Kinghelm KH-SSMA-KWE has undergone strict mating cycle testing and supports up to 500 insertion and withdrawal cycles. Even after repeated connections and disconnections, it maintains reliable contact accuracy and locking stability. The threaded structure is resistant to wear and loosening, making it suitable for applications requiring frequent equipment adjustment and maintenance. The product features a compact and precise structure, with a single-piece gross weight of only 2.38g. Its lightweight design minimizes PCB load and aligns with the trend toward thinner and smaller electronic devices, making it especially suitable for space-limited applications such as mini drones, embedded communication modules, and portable testing instruments.

In terms of packaging and manufacturing design, Kinghelm fully considers customers’ requirements for bulk purchasing and storage. The KH-SSMA-KWE adopts standardized bag packaging with excellent protection, effectively preventing damage, oxidation, and pin deformation during transportation and storage, ensuring consistent product quality upon delivery. The through-hole package offers strong compatibility with conventional PCB soldering processes. After soldering, it provides a secure fit with excellent resistance to vibration and detachment, making it suitable for complex operating environments such as automotive systems, outdoor equipment, and industrial control applications where vibration is frequent.

With its outstanding overall performance, the Kinghelm KH-SSMA-KWE SSMA right-angle female connector offers a wide range of applications across commercial, industrial, and consumer fields. In communication systems, it can be used for base station modules, IoT communication antennas, and short-range RF transmission devices. In precision testing applications, it is suitable for microwave testing instruments, signal detection equipment, and laboratory RF debugging systems. It is also widely applicable in satellite navigation equipment, smart home RF modules, industrial automation control systems, and other scenarios, making it an ideal RF connector solution for compact and high-performance applications.

Kinghelm KH-SSMA-KWE Specification

Looking at the overall development trend of the RF connector industry, miniaturization, high precision, and high reliability have become the dominant directions of technological advancement. Kinghelm remains committed to the R&D and manufacturing of precision electronic components, including RF connectors and interconnect products, while continuously improving product quality through strict quality control standards. With advantages including standard 50Ω impedance, 6GHz high-frequency transmission capability, wide temperature tolerance, low loss, and high durability, the KH-SSMA-KWE effectively solves industry challenges such as RF connection in limited spaces, stable high-frequency signal transmission, and reliable operation under harsh conditions. It provides solid support for the stable operation of RF equipment across various industries and serves as a cost-effective, high-quality choice for engineers, purchasers, and R&D professionals selecting SSMA right-angle connectors.

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.

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