SMA Male Crimp Solder Connector for RG58 LMR-195 RG142 Cable TYPE SMA Connector is a Kind of shmlink RF coaxial connectors that is widely applied, with small-sized thread coupling. Characteristic impedance is 50.The characteristic of connectors is in wide frequency range excellent performanceã??high reliability. They are used in connection with RF cable China or micro-strip line in RF circuit of the WIAN SYSTEM controlled program microwave equipment and the digital communication system. The frequency can be up to 18GHz by using semi-rigid or semi-flex cable.