10-Position Mezzanine Header, 0.50 mm Pitch, 3 mm Stack
The Hirose DF12(3.0)-10DP-0.5V(86) is a 10-position header with outer shroud contacts from the DF12 series, designed for board-to-board mezzanine stacking.
What the 3 mm Stack Height Means for Your Board Pair
The 0.50 mm pitch on 2 rows gives 10 positions in a compact footprint, but the routing density on the bottom board needs a fine-line PCB process to escape the inner rows.
Obsolete — Sourced Through Surplus and Broker Channels
The DF12(3.0)-10DP-0.5V(86) is officially listed as Obsolete. No factory orders are being accepted, and there is no direct replacement from Hirose with the same 3 mm stack height and 0.50 mm pitch in the DF12 family.
Board Layout and Termination Notes
Surface-mount termination on a 0.50 mm pitch means the solder pads are tight — expect a 0.25 mm to 0.30 mm pad width with a 0.20 mm solder mask web between pads. The board guide features on the header help align the part during pick-and-place, and the solder retention features hold it in place through reflow without secondary adhesive. The 2.30 mm height above board (0.091") leaves clearance for passives on the bottom board under the header body, but check your tallest component on that side against the 3 mm stack minus the header body height.