1.27 mm pitch, 40-position, right-angle header for dense board-to-board or cable interconnects
The 5-104477-4 is a 40-position, 2-row, right-angle through-hole header from the AMPMODU System 50 series, on 1.27 mm pitch with 2.54 mm row spacing.
30 µinch gold mating finish and UL94 V-0 housing
Against the 1-1871673-2 (4-position, 2.50 mm pitch, tin-plated, shrouded 4-wall), the 5-104477-4 offers 40 positions on a finer 1.27 mm pitch with gold-plated contacts — a denser, higher-cycle-life option for signal-level interconnects. The 1-1871673-2 carries a 250 VAC/DC rating and a board lock feature; the 5-104477-4 uses a latch holder and board guide instead.