The 5415085-1: It terminates via solder to the centre conductor and shield, mounts through a bulkhead with a front-side nut, and carries a right-angle PCB tail for board-edge installation. The 75 Ohm impedance, not the 50 Ohm standard, tells you this connector was built for composite video, SDI, or similar 75 Ohm transmission lines — a 50 Ohm BNC will work electrically but the impedance mismatch causes reflections at higher frequencies. Rated to 1 GHz with a 500 V voltage ceiling, it handles standard-definition and most high-definition video bandwidths without signal degradation. The 500-cycle mating life is typical for a bayonet-lock BNC — the coupling nut sees wear long before the centre contact does, and 500 mates covers years of field reconnections in a patch panel or test setup. Three features set this jack apart from a plain BNC: a Board Guide to align the connector during PCB insertion, an integrated Filter for EMI suppression on the signal line, and an Isolated design that breaks the ground loop between the shield and the chassis. That Isolated feature is unusual — most BNCs tie the shell directly to ground, so this one is worth tracking if your application needs a floating shield or a controlled ground path.
The right-angle PCB tail means the board sits parallel to the panel face, saving depth in an enclosure.