The Hirose DF12C(3.0)-32DS-0.5V(81) is a 32-position, 2-row receptacle with center strip contacts from the DF12 series, designed for board-to-board mezzanine stacking at a 3mm mated height. The 0.020" (0.50mm) pitch packs 32 circuits into a compact footprint — typical for tight parallel-board layouts in portable electronics or module-to-motherboard interconnects.
What the 3mm Stacking Height and 0.50mm Pitch Mean for Board Layout
The 0.50mm pitch drives the board footprint: each contact lands on a 0.50mm grid, which demands fine-line routing (typical 0.25mm trace/space) to escape the connector fan-out. The 0.087" (2.20mm) height above board of the receptacle itself leaves room for passives under the mezzanine card if the header side is shorter.