What This Connector Is
The Amphenol FCI 87901-408HLF is the 8-position member of the BERGSTIK II dual-row header series, designed for Board to Board interconnects at the standard 0.100 inch (2.54 mm) pitch. The header carries male square pins in phosphor bronze, fully loaded across all 8 positions, with push-pull fastening on an unshrouded body that accepts the matching BERGSTIK II receptacle or IDC socket. Tin plating at 100.0 µin (2.54 µm) covers both the mating interface and the solder-tail post — a finish suited to multiple mating cycles rather than long-term lock-and-leave deployments.
Key Ratings for BOM Fit
The 5 A per-contact current rating at the 0.100 inch pitch gives this header real utility in signal and low-power bus distribution — the dual-row layout carries 8 circuits in a compact footprint, and the 110 V rating covers most logic-level and control bus voltages in industrial and instrumentation applications. The 0.100 inch row spacing matches the industry-standard 2.54 mm grid, so the board footprint drops intolayouts designed for the full BERGSTIK II family without routing rework. Contact finish is tin throughout at 100.0 µin (2.54 µm) — heavier than most light-duty headers, which helps with solderability and gives the mating interface some abuse tolerance. The UL94 V-0 black housing sets the flammability ceiling for enclosed or enclosed-adjacent applications.
Mating and Termination
This is a male pin header — it mounts on the board and receives the matching female BERGSTIK II receptacle or IDC socket housing. Through Hole solder termination requires a plated-through pad on the host board; the post length of 0.120 inch (3.05 mm) and overall contact length of 1.040 inch (26.42 mm) need to be verified against the board thickness and any underside clearance. The unshrouded design means polarisation and orientation rely entirely on the mating half's keying features — confirm the socket's polarization scheme before committing the header to a layout where mis-mate would be costly.
Where It Fits in the Series
The 87901-408HLF's base product number 87901 identifies it as the 8-position variant in the BERGSTIK II dual-row series at 0.100 inch pitch. No official cross-reference or alternate MPN is listed; for a different position count the matching base-number variant is the natural first look.
Sourcing Posture
Listed Active — quoted to order against BOM quantity. No official successor order code appears, so if the design is locked, confirm the 8-position count and the mating half part number before issuing the RFQ. The bag packaging is standard for loose header quantities; reel or tube pack variants may exist in the same series if higher-volume assembly is planned.