Board-to-board unshrouded header
The 77311-122-31LF is the 31-position single-row member of the BERGSTIK header line, unshrouded with push-pull fastening for board-to-board stacking. Rated 3 A per contact with gold or GXT™ mating finish and tin-plated solder tails, the header operates from -65°C to 125°C and carries a UL94 V-0 thermoplastic housing.
Position count and series fit
Within the BERGSTIK 77311 series the 31-position 77311-122-31LF sits as a single-row unshrouded header — the 0.100" (2.54 mm) pitch and through-hole footprint are shared across the series, so the position count determines circuit fit.