75 Ohm BNC Jack — 6274425-2
It covers DC through 4 GHz, which puts it in the sweet spot for composite video, CCTV, baseband telecom, and test equipment where 75 Ohm is the line impedance standard.
The body is die-cast zinc with a tin finish, silver in colour. Dielectric is PTFE, which keeps losses low and impedance stable through the 4 GHz band. The shield terminates via solder to the bulkhead; the centre contact is solder-cup termination for the coax centre conductor. Mounts through a panel hole with a front-side nut, right-angle orientation to the PCB.
No official successor order code is on record. For a BOM that calls out 6274425-2, the options are a last-time buy through surplus or broker channels, or a parametric cross-shop to a current 75 Ohm BNC jack from the same or another manufacturer — confirm the impedance, frequency range, and mounting footprint before substituting.
This is a single-port, 75 Ohm BNC jack. It mates with any standard 75 Ohm BNC plug with bayonet lock. The bulkhead mount with front-side nut requires a panel cutout and clearance for the right-angle PCB tails. The solder-cup termination suits 75 Ohm coax — the centre conductor solders into the cup, the braid solders to the shield tabs.