The 0.156" (3.96mm) pitch sets the board footprint and the receptacle it mates with — the wider pitch keeps routing simple and supports higher current per contact than a 0.100" header. The friction lock holds the header and receptacle together under vibration, which matters for industrial equipment and moving machinery where the cable sees flex. Rated 600VAC, the header suits line-voltage control circuits inside an enclosure.
ROHS3 compliant.
Mates with MTA-156 receptacle housings (e.g., 3-641208-1 series) that accept 20-24 AWG crimp terminals.