Board-to-board unshrouded header, 25 positions
The 77311-422-25LF is the 25-position member of the Amphenol ICC (FCI) BERGSTIK unshrouded header line, configured as a single-row board-to-board interconnect.
Position count within the 0.100" pitch series
At 25 positions on a single row, this header occupies the full 2.54 mm pitch footprint — the same pitch and insulation height (0.100") carry across the BERGSTIK line, so board layout and mating receptacle choice are driven by position count and row configuration.