What this connector is
The Amphenol 87901-144HLF is the 44-position member of the BERGSTIK II dual-row board-to-board header series, terminated by through-hole solder pins and rated 5 A per circuit at 0.100-inch (2.54 mm) pitch. Gold-over-phosphor-bronze contact plating at 30.0 µin (0.76 µm) on the mating face gives meaningfully better cycle life than gold-flash alternatives — a depth that holds across repeated production mating without the fretting risk that unshrouded square-pin headers carry in field-service scenarios. The 110 V rating and dual-row 0.100-inch row spacing put this squarely in signal-level and low-power board-stacking duty, not power-delivery territory.
Board layout fit
The 44-position dual-row layout uses the same 0.100-inch pitch and row spacing as the rest of the BERGSTIK II line — routing density and keep-out are consistent with any sibling in the series. The square pin profile lands in standard square-hole PCB footprints; the 0.100-inch insulation height governs the mated stack height contribution at the board interface. All 44 positions are fully loaded.
Sourcing and lifecycle
This part is listed Active in the BERGSTIK II series — quoted to order against the BOM quantity. No official successor or cross-reference listed for the 87901 base number. The UL94 V-0 flammability rating on the housing insulation is the only third-party material qualification in the listing; check with the Amphenol sales team for the full REACH/RoHS declaration if compliance documentation is needed for the build. With no shrouded housing or TPA feature, this connector serves controlled-production board-to-board mating — it is not a ruggedised or field-service part.