8 positions, 3.81 mm pitch — single-row footprint
The 1-178317-5: This is a single-row, 8-position header from the Dynamic D-3100 series, with a 3.81 mm pitch that gives you more room between contacts than the typical 2.54 mm or 2.00 mm board-to-board header. That extra spacing helps with routing and keeps creepage distances comfortable for 250 V applications. The 4-wall shrouding protects the tab contacts during mating and prevents bent pins — a common failure in unshrouded headers when the cable plug is misaligned.