The 145-0701-821 from Cinch Connectivity Solutions is a RF Connector with Frequency DC to 40 GHz, Operating Temperature -55 to 125 Degree C, Voltage Rating 250 Vrms(Working Voltage) to 1000 Vrms(Dielectric Voltage), VSWR 1.50:1. Tags: Standard. More details for 145-0701-821 can be seen below.