Board-fit and stack height for mezzanine spacing
The DF12NB(3.5)-60DP-0.5V(51): The outer shroud contacts and 3.5mm mated stack height set the z-axis clearance between parallel PCBs. Gold contact finish at 8.00µin provides reliable signal integrity across repeated mating cycles, typical for dense digital interconnects.
The DF12NB(3.5)-60DP-0.5V(51) mates with the corresponding DF12 series receptacle (same pitch, position count, and stack height). The 3.5mm stack height is one of several options in the DF12N family; verify the mating part's height code matches your board spacing.
