4-Position Push-Pull Panel Receptacle for Signal-Level Circuits
The Hirose HR10A-7R-4S(74) is a 4-position, panel-mount receptacle from the HR10A series, designed for push-pull mating in compact signal interconnect applications. It accepts female sockets terminated via solder cup, making it a straightforward field-terminable option for multi-conductor cables where a secure, keyed connection is needed. The nickel-plated zinc alloy shell and gold-plated phosphor bronze contacts (8.00µin mating finish) provide corrosion resistance and reliable contact for repeated mating cycles in indoor equipment.
Mating and Installation — What Fits and How It Mounts
The HR10A-7R-4S(74) mates with the HR10A-7R-4P(74) plug, which carries male pins in the same shell size 7. Both use a push-pull fastening mechanism — no threads to tighten, just a straight push to mate and a pull on the coupling ring to release. The keyed orientation prevents misalignment during mating. Mounting is bulkhead-style with a rear-side nut, so the receptacle installs from the inside of a panel and secures with a nut on the outside. The solder cup termination accepts stripped wire ends directly — no crimp tool required, though the joint should be heat-shrink protected for strain relief in cable assemblies.
Position Count and Plating — Choosing Between Siblings
The HR10A-7R-4S(74) is the 4-position gold-plated variant. The closest sibling is the HR10A-7R-4S(73), which shares the same 4-position count, shell size, and electrical ratings but substitutes a silver mating finish (78.7µin) for the gold. If your application demands higher corrosion resistance or more mating cycles, the gold-plated (74) version is the better call. For a 6-position requirement, the HR10A-7R-6S(74) offers the same gold plating but at a lower voltage rating of 100VAC / 140VDC due to reduced creepage distance in the smaller shell.