The SMA-KFD22 from Mechanc is a RF Connector with Frequency DC to 18 GHz, Operating Temperature -55 to 165 Degree C, Pin Diameter 0.46 mm, Voltage Rating 500 Vrms (Dielectric Withstanding Voltage), VSWR 1.15:1. Tags: Standard. More details for SMA-KFD22 can be seen below.