The Hirose DF12D(3.0)-10DP-0.5V(81) is a 10-position, dual-row board-to-board header from the DF12 series, with outer shroud contacts and a 0.50mm pitch.
At 0.50mm pitch, this header demands a tight board footprint — the pad-to-pad spacing is narrow enough that routing a single trace between pads is tight on a standard 2-layer board. The dual-row, 10-position layout gives 5 contacts per row, which keeps the connector narrow — useful when board-edge real estate is already claimed by other components. Gold on the mating side of the contacts supports the insertion and withdrawal cycles typical of a mezzanine interconnect that may be separated during test or rework.
Surface-mount termination with an integrated board guide to align the part during reflow.