103166-3 is a double-row right-angle header from the AMPMODU interconnection system, designed for board-to-board connections. This connector features a 0.100 inch (2.54 mm) centerline pitch with contacts made from copper alloy, duplex plated with 0.000030 inch (0.00076 mm) gold in the mating area and 0.000150 inch (0.00381 mm) tin on solder posts, with nickel underplating of 0.000050 inch (0.00127 mm). The housing is constructed from glass-filled thermoplastic with a black finish and UL 94V-0 flammability rating. With a contact current rating of 3 amperes and termination resistance specifications, this header is suitable for various electronic interconnection applications requiring reliable board-to-board connectivity.