The FCI BERGSTIK® II 79821-452HLF is a 52-position, dual-row unshrouded male header on a 0.100" (2.54 mm) pitch — a standard footprint for board-to-board stacking or wire-to-board via a matching IDC receptacle. The 0.100" insulation height and 0.430" mating pin length give a typical mated stack height around 0.530" when paired with a standard receptacle. UL94 V-0 rated black housing.
Pitch and row configuration
Dual rows on a 0.100" (2.54 mm) pitch, with a 0.100" row spacing — the standard 0.100" x 0.100" grid. All 52 positions are loaded, so the footprint is a 2 x 26 array of 0.025" square pins. The 0.200" solder-tail length suits standard 0.062" PCBs.