40-Position Mezzanine at 0.80mm Pitch — the Board-Stacking Fit
The 0.031" (0.80 mm) pitch packs 40 circuits into a compact SMT footprint — the tight pitch means the board layout engineer must route traces between pads with care, as the escape routing under the connector leaves little room for wide power traces. The built-in Board Guide aligns the receptacle to the mating plug during assembly, preventing the outer signal pins from taking shear loads that could lift the SMT pads.
