Pitch, circuit count, and current ceiling
Two positions loaded all — no empty slots to manage. In a 2-position header, the total current through the pair is 6 A, but each pin carries its own share — no shared derating in a single row. The 40 V voltage rating suits low-voltage DC rails and signal-level AC.
Solder termination with a 0.138" (3.50mm) post length — enough for a standard 1.6mm PCB with through-hole soldering.
The closest sibling in the same form factor is the 1394090-1, also a right-angle through-hole header but with 6 positions and a 0.112" (2.85mm) pitch — a different footprint entirely. The 280377-1 stays on the 0.100" grid, which is more common for standard 2.54mm receptacles. The 1394090-1 uses a 4-wall shroud and latch holder; the 280377-1 uses a 3-wall shroud with detent lock. For a 2-position BOM line, the 280377-1 is the direct fit.