The shrouded-2 wall design and detent lock provide positive retention against vibration, a step up from unshrouded pin strips.
Pitch and footprint: what the 3.96mm spacing means
The wider spacing allows larger PCB traces between pins and reduces routing congestion for power or mixed-signal layouts. The through-hole mounting with 0.130" (3.30mm) post length suits standard 1.6mm PCBs.
