TE 1274663-2 — Mini BNC Jack, 75 Ohm, Obsolete
The TE Connectivity 1274663-2 is a mini BNC jack (female socket) built for 75 Ohm systems, with a 2 GHz bandwidth ceiling and 300 V rating. It is the 2-port, bulkhead-mount member of the 1274663 base series, terminated via solder cup and shield solder tab. The kit ships with the connector body, two lockwashers, and two nuts — the mounting hardware needed for a front-side panel install.
75 Ohm Impedance — Why It Matters
At 75 Ohms, this BNC is specced for video, broadcast, and legacy telecom signal paths — not the 50 Ohm standard of RF test equipment or cellular infrastructure. The 2 GHz max frequency covers SDI video and baseband analog video; it will not carry L-band satellite or modern datacom at full return loss.
The bulkhead flange is secured from the front side using the included nuts and lockwashers, so the connector does not rotate during cable mating.
No official successor order code is listed on record. If a 75 Ohm mini BNC with a right-angle board mount is needed, a parametric search on impedance, frequency, and mounting style will surface current-production alternatives; there is no direct drop-in replacement from TE.