14-Position 0.50mm Pitch Mezzanine Receptacle — 3mm Stack Height
The Hirose DF12(3.0)-14DS-0.5V(86) is a 14-position receptacle with center strip contacts from the DF12 series, designed for board-to-board mezzanine stacking at a mated height of 3mm.
Obsolete — Plan the Replacement Before the BOM Locks
That means Hirose has stopped production, and the usual distribution channel no longer stocks it as a standard line item.
The 3mm mated stacking height sets the z-axis budget between the two PCBs; at this height, the connector is suited for parallel board stacks where the gap is under 4mm, common in compact consumer electronics and sensor modules.
Surface-Mount Termination and Gold Contact Finish
Termination is surface mount — no through-holes, so the board backside stays clear for other components. The gold contact finish at 8.00µin provides a corrosion-resistant mating surface for the repeated connect-disconnect cycles a mezzanine connector sees during board-level testing or module replacement. That plating thickness is a mid-range spec: enough for several hundred cycles in a clean environment, but not rated for the thousands of cycles you would expect from a heavy-duty industrial or automotive connector.