Hirose SR30-10PE-4P(71) — 4-Position Circular Plug, Solder Cup, Obsolete
The Hirose SR30-10PE-4P(71) is a 4-position circular plug with male pins from the SR30 series, shell size 10. The contacts are gold-plated (8.00µin) brass pins terminated via solder cup — the standard field-repairable termination for this class of connector. Rated at 1A per contact and 100VAC / 140VDC, it is suited for signal-level interconnect in radio equipment and similar low-power applications within a -10°C to 60°C operating range. The shell is nickel-plated zinc alloy, with a brass/nickel backshell; the insert is polyacetal.
Mating and Field Fit
The threaded coupling nut provides positive retention under vibration — a standard feature for circular connectors in field-service environments. The keyed orientation ensures the plug and receptacle align in only one position, preventing pin damage during mating. The solder cup termination is straightforward for field repair: strip, tin, and solder each conductor into the cup, then secure the cable with the backshell and clamp.