The 5103309-5 is a 20-position, vertical mount, low-profile pin header designed for board-to-board and wire-to-board connections. It features a dual-row configuration on a .100 x .100 inch grid with .025 inch square brass posts. The housing is constructed from black, glass-filled nylon with a UL 94V-0 flammability rating. The contacts feature 'Plating A', a duplex plating of gold flash over palladium-nickel on the mating surfaces and tin on the solder area, ensuring a reliable connection. This header is designed for manual insertion and is mateable with AMPMODU, Novo, and 600-series female socket connectors.