The Hirose DF12D(5.0)50DP0.5V80 is a 50-position header with outer shroud contacts from the DF12 series, a fine-pitch board-to-board mezzanine line. It uses a 0.50mm pitch across two rows, surface-mount termination, and a board guide feature for alignment during assembly. The mated stack height is 5mm, set by the (5.0) suffix in the order code — the 0.169" (4.30mm) height above board leaves room for the mating receptacle to reach the correct z-height. Gold contact finish suits repeated mating cycles common in modular or test-interconnect designs.
The 5mm mated stack height is the dimension that governs z-axis clearance in a mezzanine pair — the header and its matching receptacle together span that gap. The header's own height above board is 4.30mm, so the receptacle contributes the remaining height.