The Hirose DF12(4.0)-32DP-0.5V(86) is a 32-position, 2-row header with outer shroud contacts from the DF12 series, designed for board-to-board mezzanine stacking. Its defining dimension is the 4 mm mated stacking height — this is the fixed board-to-board gap when mated with the matching DF12 receptacle.
The 32 positions match a 32-circuit BOM line; the 2-row arrangement means 16 contacts per row. Gold contact finish at 8.00 µin thickness provides adequate corrosion resistance and mating cycle life for typical internal equipment use, though it is not a heavy-duty plating for frequent field reconnections.