Board-to-Board Signal Routing with 2.00 mm Pitch
The 2842139-4: The tin-plated solder posts (78.7 µinch / 2.00 µm) hold up through wave solder without dewetting.
No minimum order threshold beyond the standard reel or tube package — the Bulk package means it ships in loose tubes or bags, not taped for automated placement.
The difference: 1376779-2 carries a 3 A current rating (vs 2 A here) and a 250 VAC voltage rating (vs 125 VAC/DC), and its gold mating thickness is 8.00 µinch (0.203 µm) — half the 15.0 µinch on this part. If the application needs higher current or voltage, the 1376779-2 is the better fit; if mating cycle life matters more, the thicker gold on 2842139-4 wins.