The FMCN1681 from Fairview Microwave is a RF Connector with Frequency DC to 67 GHz, Connector Length 0.443 Inches, Operating Temperature -40 to 165 Degree C, Pin Diameter 0.2286 mm, VSWR 1.25:1. Tags: Field Replaceable. More details for FMCN1681 can be seen below.