2.00 mm Pitch Breakaway Header — Board-Layout Fit
The 2355045-2: Each contact is rated 2 A at 125 VAC/DC, with a gold mating finish at 3.94 µinch — a flash coating that handles occasional mating cycles in a clean environment. The tin-plated post (78.7 µinch) solders reliably into plated through-holes.
Unshrouded Design — No Keying, No Pin Protection
This is typical for breakaway headers where the user snaps off the desired pin count from a longer strip.
RoHS3 compliant.
The key difference is the gold mating finish: 1376779-2 uses 8.00 µinch gold vs the 2355045-2's 3.94 µinch. That extra gold thickness roughly doubles the mating cycle capability — useful if the connector sees repeated disconnect/reconnect in the field. 1376779-2 is also rated 3 A (vs 2 A) and 250 VAC (vs 125 VAC/DC), and ships in a box rather than a tube. If your BOM needs higher current or voltage margin, or more mating cycles, 1376779-2 is the better fit — but the board footprint and pinout are identical.