The Amphenol FCI 79425-444HLF is a 44-position, dual-row unshrouded male header from the BERGSTIK® II series, on a standard 0.100" (2.54 mm) pitch with matching 0.100" row spacing. The tin-plated mating surface carries a heavy 100.0 µin (2.54 µm) finish, rated for 5 A per circuit at 110 V. The black UL94 V-0 housing sits at a 0.100" insulation height, and the overall contact length of 0.410" (10.41 mm) gives a 0.190" mating interface and a 0.120" solder tail.
At 0.100" pitch and 0.100" row spacing, this header uses the industry-standard 0.025" square pin grid. The 44 positions fill a 2.150" row length (21 spaces × 0.100"), which is a common footprint for backplane or mezzanine card edges.
The 100.0 µin tin-on-phosphor-bronze mating finish is a heavy-duty, low-cost option for applications that do not require the corrosion resistance or cycle life of gold.