The 1735481-4 is a PCB mount receptacle connector designed for vertical board-to-board interconnection with 100 signal positions and a 0.8 mm centerline pitch. It features gold-plated mating contacts on a copper alloy base with tin plating on the PCB termination area, providing reliable electrical performance and corrosion resistance. The connector operates at 100 VAC with a dielectric withstanding voltage of 500 VAC and maintains insulation resistance of 2 MO, ensuring robust performance in demanding applications. With a connector height of 17 mm and stackable design supporting heights of 17–20 mm, it accommodates flexible board spacing requirements. The receptacle is surface-mount compatible, operates across a temperature range of -40°C to +125°C, and meets UL 94V-0 flammability standards, making it suitable for high-density interconnect applications in industrial, telecommunications, and computing equipment.