The 350426-1: The 0.200-inch (5.08 mm) pitch sets the board routing density and the per-contact current ceiling. At 12 A per circuit with a 250 VAC rating, the temperature rise stays within the UL94 V-2 nylon housing limit across the -55 to 105 °C operating range. This is an 8-position, 2-row vertical header with all positions loaded — the row spacing of 0.360 inch (9.14 mm) and insulation height of 0.375 inch (9.53 mm) give a compact but serviceable footprint for through-hole assembly.
Mechanical retention that survives vibration
The shrouded 4-wall design and detent lock are the primary retention features. Contact length on the mating side is 0.181 inch (4.60 mm), and the post length is 0.240 inch (6.10 mm) — enough to clear a standard PCB thickness and still leave room for solder fillet inspection.
Sourcing and compliance at a glance
The base product number is 350426, and the series is Commercial MATE-N-LOK — a family of wire-to-board connectors with matching crimp terminals and plug housings.