50-Position Mezzanine Receptacle at 0.50mm Pitch
The Hirose DF12A(3.0)50DS0.5V80 is a 50-position receptacle with center strip contacts from the DF12 series, designed for board-to-board mezzanine stacking at a 3mm mated height. The 0.020" (0.50mm) pitch and dual-row layout pack 50 signal lines into a compact SMT footprint, making it suited for dense PCB stacks in portable electronics, handheld devices, and other space-constrained assemblies where the 3mm gap between boards is a fixed mechanical constraint.
The surface-mount termination suits reflow soldering. The 3mm mated stacking height is the key dimension for the mezzanine pair: the matching header must also be specified for 3mm stack height to achieve the correct board-to-board spacing.
The gold plating, combined with the 0.50mm pitch, positions this receptacle for signal-level duty rather than high-current power — the narrow pitch limits per-contact current capacity well below what a wider-pitch connector would carry.