It's a 12v 500mW Zener diode. This is a general purpose diode which is generally use in Voltage reference, Voltage stabilizer, Shunt regulator, Clipping and clamping circuits, Voltage switching operation, Different kinds of protection circuit.
Specification
| Zener Voltage | 12V |
| Power Dissipation | 500mW |
| Zener Tolerance | 2% |
| Package | SOD-80 |
| Number of pieces | 1 |
| Country of Origin | China |
