12-Position Panel Receptacle for Signal-Duty Circular Interconnects
The Hirose HR10A-10R-12PB(71) is a 12-position circular receptacle with male pins, part of the HR10A series. It mounts in a panel cutout via a bulkhead rear-side nut, with through-hole solder tails for the PCB connection. The push-pull latching mechanism and keyed orientation make it suited for field-serviceable equipment where quick disconnect and mis-mate prevention matter — think test instruments, medical peripherals, or industrial control panels that get swapped in the field. The metal shell with nickel finish and silver-plated phosphor bronze contacts (78.7 µin mating finish) is built for repeated connect cycles in a signal-path role.
2 A per Contact — Signal-Grade Current in a Compact Shell
Rated 2 A per contact, this receptacle is sized for signal and low-power circuits, not bus-level distribution. The 100 VAC / 140 VDC voltage rating gives headroom for mixed AC/DC wiring in the same connector — common in instrumentation where a sensor signal shares a harness with a DC control line. The silver mating finish (78.7 µ" thick) handles the mating cycle count of a panel-access connector better than a thin gold flash would, though silver tarnishes in sulphurous environments; keep the mated pair in a controlled atmosphere or specify the gold-plated variant (HR10A-10R-12PB(72)) for corrosive settings.
Push-Pull Latch and Keyed Shell — Field-Swap Without Errors
The push-pull fastening type lets an operator disconnect by pulling the shell — no threaded coupling to spin, no tool required. The keyed orientation ensures the plug only inserts one way, which matters when multiple HR10A receptacles sit on the same panel.
12 Positions vs 10 — Match the Circuit Count Exactly
The 12-position HR10A-10R-12PB(71) shares the same shell size (10), 2 A rating, and silver finish as the 10-position HR10A-10R-10PB(71). The decision between them is strictly circuit count — 12 circuits vs 10 circuits at the same 2 A per contact.