Board-to-board receptacle, 20-circuit Dubox™ series
The 71609-310LF is the 20-circuit member of Amphenol ICC's Dubox™ board-to-board receptacle line, a 0.100" (2.54mm) pitch dual-row female socket with surface-mount right-angle termination. Mating contacts are gold-plated (30.0µin / 0.76µm) over phosphor bronze; post contacts are tin-plated (78.7µin / 2.00µm). The housing is glass-filled thermoplastic rated UL94 V-0.
Pitch and footprint across the series
The 0.100" (2.54mm) mating pitch and 0.100" (2.54mm) row spacing are shared across the Dubox™ series — the 20-position 71609-310LF uses the same board footprint as other 2-row Dubox™ receptacles at the same pitch. Match the position count to the circuit count on the BOM; the footprint does not change.