2-120521-1 is a 64-position PCB mount receptacle designed for vertical board-to-board connections. It features a 1 mm centerline pitch, gold-plated contact mating areas with phosphor bronze base material, and supports a maximum contact current rating of 1 A with an operating voltage of 250 VAC. The connector utilizes surface mount termination with locating posts for PCB alignment and offers stack heights of 8 mm, 9 mm, or 10 mm. Constructed with high temperature thermoplastic housing and rated UL 94V-0 for flammability, this receptacle is ideal for signal applications in compact electronic assemblies requiring reliable parallel board-to-board interconnections.