50-Position 0.50mm Pitch Board-to-Board Receptacle — Now Obsolete
The Hirose DF12C(3.0)-50DS-0.5V(81) 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 circuits into a compact footprint — the sort of density you need when routing traces between stacked PCBs in a handheld or portable device.
What the 3mm Stacking Height and 0.50mm Pitch Mean for Your Board
At 0.50mm pitch, the trace escape from the BGA-like footprint needs careful via-in-pad or microvia planning; the 2-row layout gives 25 contacts per row, which keeps the connector length manageable for a 50-position part. The gold contact finish at 8.00µin is standard for moderate insertion/withdrawal cycles in consumer and portable electronics — not specced for thousands of mates in a field-service scenario.