20-position 0.50mm-pitch mezzanine receptacle
The DF12(3.0)-20DS-0.5V(86): This is a Hirose DF12 series receptacle with 20 positions arranged in two rows at 0.50mm pitch — a fine-pitch mezzanine connector for stacking PCBs at a 3mm gap.

Hirose DF12 series, 20-position receptacle, 0.020" (0.50mm) pitch, 2 rows, surface mount, gold contacts, 3mm mated stack height, board guide and solder retention features.
| Parameter | Value |
|---|---|
| Series | DF12 |
| Mounting | Surface Mount |
| Connector type | Receptacle, Center Strip Contacts |
| Height above board | 0.087\" (2.20mm) |
| Mated stacking heights | 3mm |
| Pitch | 0.020\" (0.50mm) |
| Package | Tape & Reel (TR) Cut Tape (CT) |
| Features | Board Guide, Solder Retention |
| Contact finish | Gold |
| Rows | 2 |
| Positions | 20 |
| Contact finish thickness | 8.00µin (0.203µm) |
The DF12(3.0)-20DS-0.5V(86): This is a Hirose DF12 series receptacle with 20 positions arranged in two rows at 0.50mm pitch — a fine-pitch mezzanine connector for stacking PCBs at a 3mm gap.
Hirose has not published a direct pin-compatible replacement for this specific 20-position, 3mm stack-height variant.
The pitch is 0.50mm (0.020") and the mated stack height is 3mm — a low-profile mezzanine fit for compact board stacks.