The 142184-75: It ships as a kit: the jack, a lockwasher, and a front-side mounting nut. The 75 Ohm impedance targets video distribution, telecom baseband, and CATV infrastructure — signal paths where 50 Ohm would leave a mismatch. The gold-plated brass body and gold centre contact pair with a PTFE dielectric to hold the line impedance through the bulkhead transition.
Mounting and Termination — Bulkhead Plus PCB Anchor
The right-angle solder tails then drop into the PCB and are wave-soldered, giving the assembly both mechanical retention at the panel face and a solid ground connection through the shield solder points. The snap-on fastening mates with a standard SMB plug; the 500-cycle rating comes from the gold-on-gold contact interface, which resists fretting corrosion over repeated connect-disconnect cycles in test or field-service roles.