It uses the standard 0.100" (2.54mm) pitch — the same footprint as legacy 0.1-inch grid prototyping boards — so board layout is straightforward with any 0.100" female socket strip. The contacts are phosphor bronze with 30.0 µ" (0.76 µm) gold on the mating surface, rated for 5 A per circuit at 110 V.
The 26 positions are all loaded — no skipped pins.
