The 252102-75: It terminates RG-179, 179A, 179B, 187, 187A, and Belden 9221 cables, covering the common 75 Ohm miniature coax types used in CCTV, SDI video, and baseband data runs.
Kit Contents — What Ships in the Box
This is a complete cable-termination kit, not just the plug body. The package includes four pieces: the MCX plug connector, an end cap, a ferrule, and a gasket. The ferrule crimps over the cable braid for shield termination; the gasket seals the cable entry against moisture ingress in outdoor or industrial environments. The end cap protects the interface when unmated. For a build-to-print shop, this means one order code covers the full termination hardware — no separate sourcing of ferrules or backshells.
RF Performance and Termination Details
Rated to 6 GHz with 0.1 dB insertion loss, this plug handles the full bandwidth of 75 Ohm video links — SDI up to 12 Gbps and broadband data signals. Shield termination is crimp; the centre contact is soldered — a standard field-termination method for RG-179 coax.
The 252151-75 is the closest functional peer — same MCX style, same 75 Ohm impedance, same 6 GHz frequency max, same 500 mating cycles, and same gold body finish. The key difference: the 252151-75 is a jack, female socket, while the 252102-75 is a plug, male pin. They mate together as a pair. The 252151-75 also uses solder shield termination instead of crimp. For a panel specified around the 252151-75 jack, the 252102-75 plug is the correct mating half — no rewiring needed, just the gender swap.