Description
The 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. The BT151 is a planar passivated Silicon Controlled Rectifier in a SOT78 plastic package designed for applications requiring excellent thermal cycling performanceand good bidirectional blocking voltage capability.
Features
• High thermal cycling performance
• Good bidirectional blocking voltage capabilities
• 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
• Available in the TO-220AB package
BT151 Pinout
| Pin Number | Pin Name | Description |
| 1 | Cathode | Conventional current flows out of the cathode. |
| 2 | Anode | Conventional current flows into the anode. |
| 3 | Gate | Controls conduction between the anode and cathode. |
| 4 | Tab | Electrically connected to the anode. |
BT151 Equivalent SCRs
- BT152
- TYN208
- 2N6508
BT151 Alternatives
| Name | Description |
| BT151-500LTRIGGER DEVICES | Silicon Controlled Rectifier, 12 A, 500 V, SCR, TO-220AB, PLASTIC, SC-46, 3 PIN |
| BT151-500L,127TRIGGER DEVICES | Silicon Controlled Rectifier, 12A I(T)RMS, 500V V(DRM), 500V V(RRM), 1 Element, TO-220AB, PLASTIC, SC-46, 3 PIN |
Applications
• Voltage Regulation
• Ignition Circuits
• Motor Control
• Protection Circuits
• Static Switching
