JMD Series 80-Position Mezzanine Receptacle
The gold contact finish on both rows handles repeated mating without surface corrosion creeping in, which matters when the device sees field service or multiple assembly passes.
Stack Height Options for Z-Budget
The mated stacking heights are specified at 4.5mm, 5mm, and 6mm — three discrete options that let the board designer tune the gap between parallel PCBs without changing the receptacle footprint. That range covers thin-profile builds at the low end and enough clearance for mid-board components at the high end. The 0.122" (3.10mm) height above board of the unmated receptacle sets the floor for the stack calculation.