The Amphenol FCI (Amphenol ICC) BERGSTIK® II 87900-452HLF is a 52-position, dual-row, unshrouded board-to-board header on a standard 0.100" (2.54 mm) pitch — the same spacing used across the BERGSTIK II family for decades. Each row is also spaced at 0.100", so the footprint matches a standard 0.100" x 0.100" grid, which is the de facto layout for legacy backplane and peripheral card interconnects. All 52 positions are loaded, meaning there are no omitted pins for keying or polarization — every circuit on the BOM gets a contact.
The overall contact length is 0.940" (23.88 mm), with the mating pin extending 0.720" (18.29 mm) above the insulation.
