Board-to-board mezzanine header for tight stacking
The Hirose DF12NB(3.0)-32DP-0.5V(51) is a 32-position header from the DF12 series, designed for parallel board-to-board stacking with a 3 mm mated stack height.
Stack height and footprint — what the 3 mm means for your build
The 0.091" (2.30 mm) height above board and 3 mm mated stacking height set the gap between the two PCBs.
The DF12NB(3.0)-32DP-0.5V(51) sits between the 30-position DF12NB(3.0)-30DP-0.5V(51) and the 40-position DF12NB(3.0)-40DP-0.5V(51) at the same 0.50 mm pitch and 2.30 mm board height. The position count is the only variable — pick the one that matches your signal count without wasting board area. The mating receptacle is the DF12NB(3.0)-32DS-0.5V(51), which has a slightly lower 2.20 mm board height to achieve the 3 mm stack.