It carries a built-in filter and isolated mounting, with a board guide on the right-angle PCB tail to align the solder posts during assembly. The 500-cycle mating rating and gold-plated phosphor bronze centre contact suit it for field-service gear that gets reconnected regularly.
No official direct replacement or successor order code is recorded.
The 75 Ohm impedance is the spec that decides fit — this is not a 50 Ohm BNC. If your system runs standard-def or HD-SDI video, 75 Ohm is correct; if it's RF test gear or telecom, you need the 50 Ohm variant. The 1 GHz ceiling covers baseband video cleanly but stops short of the multi-GHz range where 75 Ohm BNCs are sometimes pushed. The right-angle tail and front-side nut bulkhead mount let it sit flush against a panel with the PCB running parallel — common in rack-mount video distribution gear where board space is tight.