Board Layout and Current Budget
The 95278-401A26LF: The 3 A per contact rating is the current ceiling at the contact interface; in practice, derate for ambient temperature and the number of adjacent pins carrying full current. The unshrouded design means the male pins are exposed after soldering. This saves z-height but leaves the pins vulnerable to bending during handling — plan for a pick-and-place nozzle that clears the pin tips.
Tin is a cost-effective contact finish for applications with fewer than 50 mating cycles — it forms a thin oxide layer that breaks through on initial wipe.