Board footprint and power rating
The 1-641970-1: This is a 6-position, 3-row header on a 6.35 mm pitch — the 0.250-inch spacing is standard for power distribution in the Universal MATE-N-LOK family. Rated 12 A per contact at 600 VAC, the tin-on-tin contact finish handles moderate mating cycles — expect several hundred mates before fretting becomes a concern in clean environments.
Locking ramp and shrouding for secure mating
The 4-wall shrouding with a locking ramp prevents misalignment and holds the mated pair under vibration — a practical choice for panel wiring or equipment where the cable gets tugged.
Peer comparison: 1318699-3 vs 1-641970-1
The 1318699-3 is a 12-position, 4-row header on a 4.20 mm pitch, rated 5 A at 250 VAC with gold-plated mating contacts. The 1-641970-1 carries higher current per circuit (12 A vs 5 A) on a wider pitch (6.35 mm vs 4.20 mm), making it the better fit for power rather than dense signal routing.