What this connector is
The Amphenol ICC 86503-452HLF is the 52-position member of the BERGSTIK II dual-row header series — a classic 0.100 inch (2.54 mm) pitch board-to-board interconnect with square male pins designed for through-hole solder assembly into a PCB. All 52 circuits are loaded. The push-pull fastening type means the header relies on a friction-locked interference fit to seat into the mating receptacle; there is no separate lock clip or CPA on the header itself.
Ratings that govern fit
Pitch is the starting point: 0.100 inch (2.54 mm) mates with any standard 2.54 mm pitch IDC or card-edge receptacle in the BERGSTIK family. The 52-circuit count is the highest position count in this series — confirm your board footprint accommodates the dual-row span with 0.100 inch row spacing. The header is unshrouded and unkeyed, which is standard for the BERGSTIK II line at this position count. In a high-vibration environment, the push-pull fit alone is the sole retention mechanism — if vibration resistance is critical, the mating receptacle should carry a secondary lock or board-mount clip. Insulation is UL94 V-0 rated black glass-filled polyester, and the overall contact length of 0.470 inch (11.94 mm) gives adequate stand-off from the board surface when seated in a deep card-edge slot.
Sourcing
The 86503-452HLF carries an Active lifecycle status. No official successor order code is listed. The part is quoted to order against the BOM quantity — confirm your board footprint and position count before committing.