The QC2-FL4G-P from Qualwave is a RF Connector with Frequency DC to 50 GHz, Operating Temperature -55 to 165 Degree C, Pin Diameter Dia. 0.3 x 0.6 mm, Voltage Rating 750 VDC, VSWR 1.15:1. Tags: Standard. More details for QC2-FL4G-P can be seen below.