The 1888193-4: The 1 A ceiling keeps temperature rise low inside the PA46 housing, even with all 20 circuits loaded.
Gold Flash Mating Surface and Through-Hole Termination
The mating contacts carry a gold flash finish—thin gold over nickel, enough to prevent oxidation during storage and initial mating, but not rated for high-cycle duty. In a ribbon-cable application where the connector mates once at assembly and stays mated, gold flash is adequate. The solder posts are tin-plated (100 µinch) and measure 0.125" (3.18 mm) long—standard for a 1.6 mm PCB. The through-hole termination gives a strong mechanical anchor; the board guide and keying slot in the housing prevent misinsertion during assembly.
The standard package is tube; no reel or tape options are listed for this MPN.
Peer Comparison: 1-1871673-2 vs 1888193-4
No direct drop-in replacement exists between the two.