6-position, single-row, 0.100" pitch — board-fit anchor
The through-hole solder termination anchors the part to the board; the 0.125" (3.18 mm) post length suits standard 1.6 mm thick PCBs with enough tail for wave solder.
Gold vs tin mating finish — cycle-life decision
The 5-146276-6 carries a gold mating finish (15 µinch), while the sibling 5-146278-6 uses a tin mating finish (100 µinch on the post, tin on mating). Gold is the standard choice when the connector sees repeated mating — the 15 µinch layer supports hundreds of cycles without oxide buildup. Tin is adequate for one-time or infrequent mate applications but can fret under vibration. If the board has room for one extra signal, the 7-position part is a drop-in alternative with the same footprint length increment.