Board-to-board breakaway header, 21 circuits
The 77315-124-21LF is the 21-position member of Amphenol ICC (FCI)'s BERGSTIK board-to-board breakaway header line. It carries a single row of square male pins on 0.100" (2.54 mm) pitch, rated 3 A per contact, with a gold or GXT mating finish and tin-plated solder tails.
Pitch, plating, and board fit
The 0.100" (2.54 mm) pitch and single-row layout set the board footprint for this breakaway header — the unshrouded push-pull design mates with standard 0.025" square-post receptacles. Mating contacts are gold or GXT at 30.0 µin (0.76 µm) thickness; the post side carries tin at 78.7 µin (2.00 µm). The thermoplastic housing carries a UL94 V-0 flammability rating and operates from -65 °C to 125 °C.