Release date：2025-06-10Author source：KinghelmViews：335
In the fast-evolving world of modern communication, RF transmission, and intelligent electronic devices, the performance demands for high-frequency connectors have become increasingly stringent. The KH-122-081SMA-250, developed by Kinghelm, rises to the occasion with its outstanding anti-interference capability, stable signal transmission, and robust structural design—making it a top choice for engineering projects and device manufacturers. More than just a connector, it’s a reliable RF solution.
Kinghelm KH-122-081SMA-250 Product Image
This SMA adapter cable features an 11-tooth straight male SMA plug with an external thread and inner bore structure. The precision-crafted interface, combined with a professional-grade stripped-end design, enables efficient, secure, and fast signal connections between devices. One of its standout features is the gold-plated SMA connector, which significantly enhances corrosion resistance and oxidation protection while reducing contact resistance—ensuring more stable and reliable connections. Whether used in complex RF modules or high-sensitivity antenna applications, the KH-122-081SMA-250 delivers clean, uninterrupted signal transmission.
Electrical Performance:
lVoltage Tolerance: Up to DC 300V (10ms)
lMaximum Contact Resistance: ≤3.0Ω
lInsulation Resistance: ≥5.0MΩ
These specifications ensure efficient high-frequency transmission while effectively shielding against external electromagnetic interference, maintaining signal integrity even in electrically noisy environments. It is especially suited for EMC-critical environments such as communication systems, industrial automation, security systems, and automotive electronics—greatly enhancing system stability and reliability.
With a weight of only 3.919g, the cable supports compact and lightweight system design—ideal for space-constrained applications. The cable is flexible, easy to route and install, and offers excellent bend resistance, extending its operational lifespan in real-world use.
Beyond product performance, Kinghelm’s comprehensive product ecosystem is another key reason behind the strong demand for the KH-122-081SMA-250. The company offers a full range of complementary RF products, including IPEX to SMA cables, U.FL pigtails, various SMA adapters, micro RF connectors, and PCB-mounted antenna interfaces—providing a one-stop RF connectivity solution. Customers can choose from standard configurations or request quick customizations to reduce development costs and shorten project timelines.
Kinghelm KH-122-081SMA-250 Specification
As a flagship high-performance SMA to stripped-end cable from Kinghelm, the KH-122-081SMA-250 has been thoroughly optimized for design, materials, performance, and compatibility. Whether for small-scale R&D testing or mass production procurement, this cable ensures stable connections and broad compatibility. From telecommunications and automotive systems to smart hardware and IoT applications, this cable stands as a trusted core component in your connectivity architecture.
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.
