Amphenol 50 Ohm MMCX RF Coaxial PCB Jack Connectors. 50 Ohm MMCX RF coaxial PCB jack connectors with solder legs, TEFLON dielectric, a gold plated brass body and gold plated centre contact. These 50 Ohm MMCX RF coax PCB mount jack receptacle connectors are available as vertical mount ( ; 700-9537 700-9537 ) or right angle mount ( ; 700-9530 700-9530 )