In the realm of RF signal transmission and wireless communication, the quality of the connection cable directly impacts system stability and transmission efficiency. The KH-IPEX3-SMA-RG081-100mm, manufactured by Kinghelm, is a professional-grade RF cable tailored for high-frequency signal transmission. With its compact structure, excellent electrical performance, and outstanding mechanical durability, this cable is widely used in GPS modules, Wi-Fi devices, 4G/5G antennas, drones, and security systems.

Kinghelm KH-IPEX3-SMA-RG081-100mm Product Image

Measuring 100mm in total length, the cable features a flexible black RF0.81 coaxial wire with a diameter of just 0.81mm—perfectly suited for installations in tight spaces or applications that involve frequent bending. A durable black heat-shrink sleeve (OD: 2.0mm) provides added protection to the internal conductor, enhancing tensile strength and abrasion resistance to ensure long-term signal stability. Weighing only 3.5 grams, its lightweight design helps reduce the load on portable and embedded devices.

On the connector side, the cable is equipped with a detachable SMA female connector (socket, 11-thread) and a high-precision I-PEX 0.81 Gen 3-compatible terminal, both gold-plated for low impedance, excellent oxidation resistance, and strong, stable signal transmission. The SMA interface is widely used in RF module-to-antenna connections due to its high durability and universal compatibility, while the I-PEX terminal excels in compact devices with high mating reliability and compatibility.

In terms of electrical performance, the KH-IPEX3-SMA-RG081-100mm RF cable offers a withstand voltage of DC 300V (10ms) and a contact resistance of ≤3.0Ω, minimizing transmission loss and ensuring high signal integrity. This makes it an ideal choice for scenarios requiring high signal-to-noise ratio, high frequency, and low interference—such as wireless communication modules, RF transceivers, and smart terminals.

As a specialized manufacturer of connectors and RF components, Kinghelm applies advanced automated production techniques and strict quality control processes. From material selection and terminal plating to assembly, testing, and packaging, every step is tightly managed to ensure high product consistency and reliability. In addition to the KH-IPEX3-SMA-RG081-100mm, Kinghelm also offers a full range of RF accessories including IPEX connectors, SMA connectors, MCX, MMCX, TNC, N-type adapters, and various RF transition components—meeting the system integration needs across different device types, frequencies, and structural designs.

Beyond its performance, the KH-IPEX3-SMA-RG081-100mm RF cable is also carefully designed for visual and structural excellence, delivering a premium cable solution that meets the expectations of quality-conscious customers. Its wide applicability and easy installation make it a reliable choice in fields such as industrial control, security monitoring, smart transportation, smart homes, and in-vehicle communication.

Kinghelm KH-IPEX3-SMA-RG081-100mm Specification

In summary, this RF cable combines high-frequency performance, rugged construction, and excellent electrical characteristics—making it a critical component in high-end communication systems. Kinghelm also supports custom orders based on project requirements, including variations in cable length, materials, and connector combinations—offering complete flexibility from standard to fully customized solutions.

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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