RP-SMA Female to IPEX4 Connector Cable 5cm RG0.81

This cable is designed for wireless modules featuring an IPEX4 (U.FL) antenna port. It is commonly used with ESP32/ESP8266 Wi-Fi boards, nRF52/nRF24 Bluetooth modules, Quectel/SIMCom 4G LTE catchers, Semtech LoRa transceivers (SX1276/SX1262), and u-blox GNSS receivers. The RP-SMA female end connects to standard RP-SMA male antennas, enabling an external antenna solution for improved range and signal reliability.

Align the IPEX4 connector carefully with the module's socket, ensuring the center pin and outer shield are oriented correctly. Apply gentle, straight-down pressure until you hear or feel a distinct click, indicating the connector is fully seated and locked. Avoid bending the cable sharply at the connector junction. To disconnect, pull the plastic housing of the IPEX connector straight up—do not pull on the cable itself, as this can damage the delicate socket on the PCB.

RG0.81 refers to the coaxial cable's diameter and construction, indicating a thin, flexible cable suitable for internal routing in compact devices. It typically maintains a 50-ohm characteristic impedance, which is standard for most Wi-Fi, cellular, and LoRa RF systems. Using a correctly impedance-matched cable like this minimizes signal reflection (VSWR) and insertion loss, ensuring maximum power transfer between your antenna and wireless module for optimal performance.