The 142-0901-431 from Cinch Connectivity Solutions is a In Series RF Adapter with Frequency DC to 18 GHz, Insulation Resistance 5000 Mohms, Mating Cycles 250 Cycles, Temperature -65 to 165 Degree C, Voltage Rating 1500 Vrms(Dielectric Withstanding). More details for 142-0901-431 can be seen below.