70-Position Mezzanine Header at 0.50mm Pitch
The Hirose DF17(2.0)-70DP-0.5V(57) is a 70-position, dual-row SMT header from the DF17 series, designed for board-to-board mezzanine stacking.
Mated stacking heights are 5mm and 6mm, so one header covers two board-spacing budgets — useful when the same PCB layout needs to fit into different enclosures. The 0.169" (4.30mm) height above board is the unmated profile; the mating receptacle determines the final stack. At 70 circuits across two rows, the footprint runs about 17.5mm long — the board guide helps the pick-and-place nozzle seat it without skew.
The DF17 series runs from 50 up to 80 positions at the same 0.50mm pitch and 4.30mm height. The 70-position DF17(2.0)-70DP-0.5V(57) sits between the 60- and 80-position siblings. If your BOM needs more I/O without changing the stack height or pitch, the 80-position DF17(2.0)-80DP-0.5V(57) is the next step up — same footprint width, just longer. No cross-reference or direct replacement exists outside the series; the position count is the only selection variable here.