With a UL94 V-0 rated black housing and phosphor bronze contacts, this is a straightforward board-to-board signal interconnect for cost-sensitive builds.
The 0.100" (2.54 mm) pitch and 0.100" row spacing mean this header lands on a standard 0.100" x 0.100" grid — the same footprint as a DIP socket or a BergStik receptacle. The 0.770" (19.56 mm) mating pin length gives plenty of reach into a standard box header or IDC socket.
