50 Ohm BNC Jack for 1 GHz RF Paths
The 031-5540-1010: The 1 GHz frequency ceiling, paired with a 0.2 dB insertion loss, suits it for test equipment, RF distribution panels, and instrumentation where signal amplitude fidelity matters. The right-angle PCB mount with a bulkhead front-side nut lets the connector sit flush against a chassis wall, saving interior space while the board lock anchors it through wave solder.
Mounting and Termination Detail
This BNC jack mounts through a panel hole and secures with a front-side nut (bulkhead style), while the right-angle PCB tails solder into the board. The isolated body means the shell is not tied to the PCB ground plane internally, which helps prevent ground loops in sensitive RF measurements — the ground path is through the shield solder tabs only.
Contact Design and Mating Cycle Life
The 500-cycle rating means this jack is built for frequent reconnection in lab, test bench, or field-service environments where cables are swapped regularly.
Peer Comparison — 031-5538-10RFX
The key difference is packaging: the 031-5540-1010 ships in a tray, while the 031-5538-10RFX ships in bulk. Both are active and electrically identical — the choice comes down to handling preference on the assembly line. The 31-5640-1010 and 31-5431 are also parametric matches but lack the isolated feature and board lock respectively.