0.50mm pitch mezzanine plug, 80 positions, 1.5mm stack
The mated stacking height is 1.5mm — tight enough for slim handheld or portable device enclosures where every millimeter of z-height is budgeted.
At 0.50mm pitch, trace routing between pads gets tight — you'll need at least a two-layer board to fan out the inner row, and the via-in-pad or microvia approach is common for the escape. The 1.5mm mated stack height means the plug and its matching receptacle sit close to the board surface; keep the keep-out zone on the opposing board clear of tall components that would interfere with the shroud.
80 positions — match the BOM circuit count exactly
80 circuits at 0.50mm pitch is a high-density interconnect. The plug mates with the matching Fine Stack receptacle (same pitch, same 80 positions) to form the mezzanine pair. Verify the BOM position count matches before committing; a 1-position mismatch means a different board layout.