The 1-5103311-0 is a low-profile pin header connector designed for reliable board-to-board interconnection in electronic assemblies. It features 50 positions arranged in a dual-row configuration with 0.100 inch (2.54 mm) centerline spacing and a 0.025 inch (0.64 mm) square post diameter. The connector is manufactured with phosphor bronze contacts plated with gold on the mating surfaces and tin on the solder tails, with nickel underplate for enhanced durability and corrosion resistance. The housing is constructed from thermoplastic material rated 94V-0 for flame resistance, and the product is RoHS compliant. This connector is commonly used in ribbon cable interconnect solutions, data acquisition systems, and general-purpose PCB applications where compact, reliable connections are required.