The TC-3520-BM-RA-X from Times Microwave Systems is a RF Connector with Frequency DC to 4 GHz, Connector Length 1.57 Inches, Operating Temperature -65 to 165 Degree C, Voltage Rating 1000 V(Dielectric Withstanding Voltage), VSWR 1.35:1, 1.40:1. More details for TC-3520-BM-RA-X can be seen below.