Amphenol RF BNC to MCX 12G Adapters feature 75Ω impedance that allows for impedance matching to the system requirements. These adapters operate at DC to 12GHz frequency range and offer 500 cycles of durability. The BNCJMCXJ12G1 RF adapter provides 1500VRMS and the BNCJMCXP-12G offers 500VRMS of dielectric withstanding voltage.