It uses the industry-standard 0.100" (2.54 mm) pitch on both rows and between rows, so the footprint matches any standard 0.100" grid — no board-layout surprises.
Fit and footprint
The 0.100" pitch and 0.100" row spacing are the classic Berg strip layout — every row of plated through-holes on 0.100" centers. The 0.318" mating pin length gives enough engagement depth for standard box headers or IDC receptacles, while the 0.107" solder tail suits a 0.062" board without excessive protrusion. All 20 positions are loaded; no option for depopulating a row on this variant.