52-Position BergStik II Header for Board-to-Board Stacking
The Amphenol ICC (FCI) 87901-152HLF is a 52-position, dual-row unshrouded header from the BergStik® II series. It uses the standard 0.100" (2.54 mm) pitch on both rows and between rows, making it a direct fit for the classic 0.100-inch grid board layout. Rated for 5 A per contact with a 110 V voltage rating, this header is suited for signal-level board-to-board interconnects where a high pin count is needed in a compact, unshrouded footprint. The 30.0 µ" gold plating on the mating surface gives it the mating cycle life for repeated board stack-ups or field service without contact fretting.
What the Key Ratings Mean for Your Build
The 52 positions are fully loaded across two rows, so every pin on the 26-pin-per-row pattern is present. The 0.100" pitch is the de facto standard for prototyping and legacy bus architectures — your board footprint matches a wide ecosystem of BergStik receptacles and IDC connectors. The 30.0 µ" gold finish is a solid industrial grade: it handles hundreds of mating cycles without exposing the phosphor bronze base metal, which matters if this header lives in a test fixture or a field-swappable card cage. The 5 A per contact rating is typical for signal paths; if you need to carry power through this header, derate for temperature rise and consider running multiple pins in parallel per the manufacturer's guidelines.
Mating and Termination Fit
This is an unshrouded male pin header with a push-pull fastening type. It mates with any standard 0.100" pitch dual-row socket strip or IDC receptacle that accepts 0.025" square posts. The 0.820" (20.83 mm) mating pin length gives plenty of reach for stacking with standard receptacles. Termination is through-hole solder — the 0.120" (3.05 mm) post length suits standard PCB thicknesses around 0.062". The overall contact length of 1.040" (26.42 mm) sets the board-to-board stack height when mated; verify the receptacle's insulation height against your z-height budget.