Panel-Mount Receptacle for Signal-Duty Circular Interconnects
The Hirose HR10A-7R-6S(74) is a 6-position, panel-mount receptacle from the HR10A series, designed for signal-level circular interconnect applications. It uses a push-pull fastening mechanism for quick, tool-less mating and unmating in field-service or test-equipment environments. The metal shell — zinc alloy with nickel finish — provides basic EMI shielding and mechanical robustness for the panel feed-through. The bulkhead mounting with rear-side nut secures the receptacle to a panel cutout, and the keyed orientation prevents mis-mating with the corresponding plug.
Sizing the Circuit Count and Mating Half
The 6-position count of the HR10A-7R-6S(74) is the first BOM check — it matches a 6-circuit harness. The closest sibling in the same shell size is the 4-position HR10A-7R-4S(74), which shares the same shell size 7, push-pull latch, and gold plating but carries a higher voltage rating of 150VAC, 200VDC due to the wider contact spacing in the smaller insert. If your circuit count is 4, the 4-position version saves one unused cavity; for 6 circuits, this is the correct fit. The mating plug for this receptacle is the HR10A-7P-6S(74), a 6-position plug with the same gold-plated female sockets, push-pull fastening, and an integrated backshell, clamp, and strain relief for cable exit. The keyed orientation ensures the plug mates only in the correct rotational alignment.
Plating Grade and Contact Finish Considerations
The sibling HR10A-7R-6S(73) uses silver plating (78.7µin / 2.00µm) on the mating contacts, which offers lower contact resistance initially but tarnishes in sulphurous atmospheres, making gold the preferred choice for field-service or storage-prone equipment.
No official cross-reference or second-source replacement is documented, so the BOM should reference this exact Hirose order code.