The 6-146257-5: The 30 circuits are all loaded, so the footprint matches a 2×15 through-hole pattern with 0.100" row spacing. At 3 A per contact, the total current ceiling across all pins is limited by the pin density and the 30 µinch gold mating finish, not the copper alloy pin itself.
Gold on the mating face, tin on the tail
The contact finish is split: 30 µinch gold over nickel on the mating surface, 100 µinch tin on the solder post. The tin post wets well in wave or hand solder and matches standard through-hole assembly.
Listed as Active in production and RoHS Compliant.
The closest peer in the same family is 1-1871673-2 — a 4-position, shrouded header with a detent lock and right-angle orientation. The 6-146257-5 gives you 30 positions on the classic 0.100" grid with gold-on-tin contacts, so it fits a higher-density signal board where the unshrouded profile saves board-edge clearance.