2-1735482-4 is a board-to-board receptacle connector designed for mezzanine PCB interconnection applications. This Free Height series connector features 100 positions arranged in 2 rows with a 0.8mm centerline pitch and supports stack heights of 17, 18, 19, and 20mm. Key electrical characteristics include a maximum contact current rating of 0.5A, dielectric withstanding voltage of 500 VAC, and gold-plated contact mating areas with 0.76µm thickness. The connector utilizes surface mount termination with vertical PCB mounting orientation and includes a steel vacuum cover for pick-and-place assembly. Operating over a temperature range of -40°C to +125°C, this EU RoHS and ELV compliant connector is ideal for high-density board-to-board connections in compact electronic assemblies.