40-position Dubox receptacle, 10.81 mm stack height
The 91615-420LF is the 40-circuit member of Amphenol ICC (FCI)'s Dubox board-to-board receptacle line, a 2-row surface-mount socket with a 10.81 mm mated stack height.
Board locks on the SMT tails hold the receptacle during reflow and resist shear from the mating header.