Press-fit pin socket, gold-plated beryllium copper
The 3503 is a press-fit PCB pin socket from Keystone Electronics, designed to accept pin diameters from 0.015" to 0.025" (0.38 mm to 0.64 mm). The contact is beryllium copper with 10.0µin (0.25µm) gold plating, press-fit into a 0.057" (1.45 mm) mounting hole — no solder required.
