Current and Temperature Envelope
The 2355179-6: The 2 A limit is conservative for a 2.00 mm pitch header — the current is derated by the housing material's UL94 V-0 flame rating, which limits the temperature rise under load. In a 70°C ambient cabinet, the full 2 A per contact is usable; above that, derate per the standard curve in the product drawing.
Mating Finish and Cycle Life
In a field-service connector that sees quarterly mating, the gold layer supports several hundred cycles before the nickel substrate is exposed.
Peer Comparison: 1376779-2 vs 2355179-6
The closest functional peer is 1376779-2: same 6-position, 2.00 mm pitch, unshrouded, through-hole format. The key differences are current rating (3 A vs 2 A) and mating gold thickness (8.00 µinch vs 15.0 µinch). If the application needs the extra 1 A headroom, 1376779-2 is the choice — but the thinner gold means fewer mating cycles before the contact interface degrades. For a low-cycle, high-current board, 1376779-2 fits; for a field-service board with frequent reconnects, the 15.0 µinch gold on 2355179-6 is the better bet.