It uses a 0.100" (2.54mm) pitch on both rows and contacts, matching the legacy 0.100-inch grid that dominates through-hole PCB layouts.
The 0.100" (2.54mm) pitch gives enough room for two traces between pads on a standard board, keeping routing density manageable for a 30-position part.
Mating and sourcing
The right-angle solder posts are 0.110" (2.79mm) long, sized for a standard 0.062-inch PCB.
Board layout note
With a 0.240" (6.10mm) insulation height above the board, the right-angle body stands off the PCB enough to clear tall components on the solder side. The row spacing is also 0.100" (2.54mm), so the footprint is a standard 2x15 grid on 0.100-inch centers — easy to route and inspect.