3.81mm pitch, 4-position right-angle header for board-edge power distribution
The 1-178294-5: This is a single-row, 4-position header from the Dynamic D-3100 series, with a 0.150-inch (3.81mm) mating pitch — wider than the typical 2.54mm signal header, giving you room for higher current or larger wire gauges in a power/signal mix.
Tin contacts, shrouded 4-wall, detent lock — built for industrial mating cycles
Both the mating and post contact finishes are tin, with a mating finish thickness of 78.7 microinches (2.00µm). These ratings align with general-purpose industrial equipment inside an enclosure.