The 1.85-KFD3 from Mechanc is a RF Connector with Frequency DC to 67 GHz, Operating Temperature -55 to 165 Degree C, Pin Diameter 0.23 mm, Voltage Rating 500 Vrms (Dielectric Withstanding Voltage), VSWR 1.25:1. Tags: Standard. More details for 1.85-KFD3 can be seen below.