What This USB-A Receptacle Is
The Amphenol FCI 87520-0112BLF is a 4-contact USB-A (USB TYPE-A) receptacle from the 87520 series, built to the USB 2.0 specification. It is a through-hole, right-angle, horizontal connector with a shielded shell and a board lock feature. The 3A per-contact current rating covers standard USB power delivery, and the Gold, GXT™ contact finish supports 1500 mating cycles.
What the 1500 Mating Cycles and GXT Plating Mean
The 1500 mating cycle rating is the standout durability spec here. Standard USB receptacles are often rated for 500 to 1000 cycles; this one doubles that. The Gold, GXT™ contact finish — a hard gold alloy over nickel — is what enables that cycle life without wearing through to the base metal. For a field-service technician, this means the port can tolerate repeated plug/unplug in a test fixture, a kiosk, or a panel-mount application where the cable gets disconnected regularly. The tin-on-tin alternatives would fret and oxidize well before 1500 cycles.
Through-hole, right-angle mounting with a horizontal orientation. The shielded shell (Copper Alloy, per the spec) contains the USB 2.0 differential pairs within the EMI envelope.