What this connector is
The Amphenol FCI 79425-444HLF is the 44-circuit member of the BERGSTIK II dual-row 0.100-inch pitch header family — a board-to-board interconnect built on 2.54 mm centres with a push-pull fastening profile that seats into a through-hole PCB without tooling latches or side screws. Phosphor bronze contacts are tin-plated to 100 µin (2.54 µm) on both mating and post surfaces, rated 5 A per circuit at the stated current — the tin thickness on the mating side covers reconnection duty at this current level without requiring a gold-grade upgrade. The insulation body is black with an UL94 V-0 flammability rating — the primary compliance flag for in-cabinet or enclosed equipment, and one that covers most industrial automation and instrumentation panel builds where this series is routinely specified.
Where it fits in the board stack
The 0.100-inch row spacing and 0.100-inch mating pitch mean this part stacks on the same 2.54 mm grid used by the full 0.100-inch pitch header class — board layout follows the standard 0.100-inch grid, no special routing or keep-out clearance beyond what the 44-position footprint demands. Insulation height of 0.100 inch (2.54 mm) and a post length of 0.120 inch (3.05 mm) set the through-hole lead-in — the post extends 3.05 mm below the shoulder into the PCB barrel. The 110 V rating governs the voltage margin at the insulation interface — adequate for low-voltage logic and control bus applications within industrial enclosures, but not a product for mains or high-voltage bus work.
Sourcing posture
Listed Active — quoted to BOM quantity against an RFQ. The BERGSTIK II family is a long-run Amphenol FCI / Amphenol ICC product with broad second-source coverage, so a consolidation buyer evaluating whether this part cross-registers across manufacturers should look at the base 79425 product number rather than the full HLF suffix — the suffix codes the plating and packing variant.