The 6-103908-1: The four-wall shroud and keying slot prevent mis-mating with the wrong receptacle — a common cause of field rework in board-to-board and wire-to-board stacks.
Termination options: press-fit or solder
The contact length — 0.230" mating, 0.130" post, 0.545" overall — sets the board thickness and receptacle engagement depth.
RoHS compliant.
