Board-to-board or cable header, 50 positions
The 9-146309-0-25 is the 50-position member of TE's AMPMODU Mod II breakaway header line, unshrouded, dual-row, with all positions loaded. Mating contacts are gold-plated (30.0 µin) on a copper alloy square pin; the solder tails are tin-plated.
