Rated 3A per contact, with gold on the mating face (15.0µin) and tin on the solder posts (100.0µin).
The closest functional second-source is 1376779-2 — also a 4-position, 2.54mm-pitch, unshrouded header with gold mating finish. The key difference: 1376779-2 uses 8.00µin gold on the mating face vs. 15.0µin on the 9-146276-0-04.
Overall contact length is 0.533" (13.55mm), with 0.318" (8.08mm) of mating pin length. The unshrouded header mates with any AMPMODU Mod II receptacle or female socket strip on the same pitch.
