42-position Dubox™ receptacle, 2.54 mm pitch
The 66925-521LF is the 42-position member of Amphenol ICC's Dubox™ receptacle line, a dual-row through-hole right-angle socket array on 0.100" (2.54 mm) pitch. Mating contacts are gold-plated (30.0 µin / 0.76 µm) for corrosion resistance over repeated cycles; the housing is glass-filled nylon rated UL94 V-0.
Position count across the Dubox™ series
The 42-position 66925-521LF sits among several Dubox™ dual-row receptacles at the same 0.100" pitch — the pitch, row spacing, and gold-plated mating contacts are shared across the series, so the selection axis is the position count matching the circuit count on the board.