Panel-Mount Circular Receptacle for Signal and Low-Power Circuits
The Hirose HR10A-10R-10SB(71) is a 10-position circular receptacle from the HR10A series, designed for panel-mount applications where a compact, push-pull mating interface is needed. It carries 10 female sockets with a silver-plated mating finish at 78.7 µin (2.00 µm) thickness, rated at 2 A per contact and 100 VAC / 140 VDC. The keyed orientation prevents rotational mis-mating, and the push-pull fastening allows quick connect and disconnect without tools — suited for instrumentation, test equipment, and control panel wiring where space behind the panel is limited.
Silver vs Gold Contact Finish — What the Plating Choice Means
The sibling HR10A-10R-10SB(72) carries an 8.00 µin (0.203 µm) gold plating instead — gold resists oxidation better over many mating cycles and in corrosive environments, while silver offers a cost advantage for fixed or infrequently mated installations. For a panel receptacle that mates a few times during equipment life, the silver finish is a practical choice; for field-service connectors cycled regularly, the gold variant is worth the premium.
Position Count and Mating Compatibility
At 10 positions, this receptacle matches circuits up to 10 conductors. The 12-position sibling HR10A-10R-12SB(71) shares the same shell size 10, voltage rating, current rating, and push-pull keyed design — the only difference is the contact count. If your BOM calls for 12 circuits, the 12-position version is a direct swap in the same panel cutout and mating plug family. For 10-circuit harnesses, this is the correct count.
The receptacle mounts through a bulkhead panel using a rear-side nut, with the shell material being zinc alloy and a nickel finish. Termination is solder cup — each contact is soldered individually to the wire, which gives a reliable connection for prototype or low-volume builds.