BNC Jack, 50 Ohm, Through-Hole — 1274314-1
The through-hole mounting with solder shield termination gives a solid ground connection to the PCB plane.
Lifecycle and Sourcing — Obsolete Status
If your design can accommodate a parametric alternative, a current-production BNC jack with the same 50 Ohm impedance and 4 GHz bandwidth is the practical path forward; the 1274314-1 itself is a last-time-buy item with no factory support remaining.
Key RF and Mechanical Specs
The 50 Ohm impedance matches standard 50 Ohm coaxial cable and PCB trace designs — no impedance mismatch at the connector interface. The 4 GHz frequency ceiling covers most common RF bands including cellular, Wi-Fi, and ISM applications below 4 GHz. The bayonet lock provides a positive mechanical mate with the standard BNC plug; the internal switch feature (listed in the specs) is a switching BNC variant that opens or closes a circuit when the plug is inserted — useful for self-terminating or sense circuits in test fixtures.