Board-to-Board Sizing: 2.00 mm Pitch, 20 Circuits, Dual-Row
The 1-2842126-0: The gold flash handles occasional reconnects — expect hundreds of mating cycles, not thousands.
ROHS3 compliant.
Cross-Shop: 1376779-2 vs This Header
The closest functional peer is 1376779-2: same 20-position dual-row 2.00 mm pitch, same through-hole solder termination, same UL94 V-0 black housing. The difference is current rating — 3 A vs 2 A — and mating-side gold thickness: 8.00 µin vs 3.94 µin. If your application needs the extra amp or more reconnect cycles, 1376779-2 is the upgrade path.