BT151 is a medium power 12A silicon-controlled rectifier that comes in a TO-220 package that can be used to switch medium power AC/DC loads and can handle high DC pulses.
- Maximum anode-cathode voltage (off state): 650V
- Maximum RMS current: 12A
- Pulsed DC current: 120A
- Gate trigger current: 15mA max.
- Holding current: 20mA max.
- Latching current: 40mA max.