Board-to-Board Mezzanine Header, 0.50mm Pitch
The Hirose DF12D(3.5)-20DP-0.5V(81) is a 20-position, dual-row header with outer shroud contacts from the DF12 series, designed for board-to-board mezzanine stacking at a 3.5mm mated height. The 0.50mm pitch keeps the board footprint tight — each row of 10 contacts on 0.50mm centers means the overall width across both rows is about 4.5mm, leaving room for routing traces between pads on a dense PCB.
The 3.5mm mated stacking height is set by the (3.5) in the order code — the header stands 2.80mm above the board surface, and the matching receptacle accounts for the remaining gap. A 20-position board like this one matches a 20-circuit bus; stepping to a 10-position sibling halves the row length but keeps the same pad geometry.
Lifecycle Status — Obsolete, Sourced to Order
This DF12D(3.5)-20DP-0.5V(81) is listed as Obsolete by Hirose.