The Amphenol 901-10112 is a 50 Ohm SMA jack (female socket) with a threaded coupling nut, built for through-hole PCB mounting. It is the single-port member of the 901-10 base series, terminated by soldering the center contact and shield to the board. The gold-plated brass body and PTFE dielectric are standard for this class — the 4 GHz upper frequency limit places it below the 18–26.5 GHz range of premium SMA parts, so it is a cost-matched choice for lower-band RF, Wi-Fi, or instrumentation links where the signal path stays under 4 GHz.
Why the 200 Mating Cycles Matter
At 200 mating cycles, this jack is rated for about half the duty of the 901-144 (500 cycles) or the 901-10735 (500 cycles) — both of which use beryllium copper contacts. The 901-10112 uses phosphor bronze for the center contact, which is a good conductor but work-hardens faster under repeated mate/unmate. For a test-point or a connector that sees occasional reconnection, 200 cycles is fine. For daily connect/disconnect in a production fixture, the 901-144 with beryllium copper and 500 cycles is the better endurance pick.