BERGSTIK II 34-Pin Unshrouded Header
The FCI / Amphenol 87901-434HLF is a 34-position, dual-row unshrouded header from the BERGSTIK® II series, designed for board-to-board stacking applications on a standard 0.100" (2.54 mm) pitch grid. Each row is also spaced at 0.100", so the total footprint is a compact 34-pin rectangle that matches the industry-standard 0.100" x 0.100" pattern.
Board Layout and Footprint
Because this header is unshrouded, the board footprint is just the two rows of 0.025" square pins on 0.100" centers. There is no plastic shroud to allow for in the keep-out zone, so the mating receptacle's housing provides the polarization and alignment. The black UL94 V-0 insulation height of 0.100" (2.54 mm) sits flush with the board surface, so the footprint is essentially the pin field itself.