The BTA12 is a medium power TRIAC from ST Microelectronics. They have good pulsed energy dissipation performance and a low holding current, making them ideal for applications like motor controllers and LED dimmers.
BTA12 TRIAC Pinout
|
Pin Number |
Pin Name |
Description |
|
1 |
A1 |
Current flows in/out of this terminal |
|
2 |
A2 |
Current flows in/out of this terminal |
|
3 |
G |
Current into/out of this terminal controls conduction between A1 and A2 |
Features
- 600V 12A medium power TRIAC
- Low thermal resistance bonding
- High surge energy capability
- ~20W power dissipation with TO220 package
Note: Complete technical details can be found in the BTA12 datasheet linked at the end of this page.
How To Use BTA12
The BTA12 is a medium power TRIAC with a low holding current, making it suitable for applications like motor controllers and LED dimmers. The BTA12 also has a high surge energy capability, meaning it can handle inductive loads without a snubber. This is possible because of the thermal mass of the die, which absorbs the energy from short pulses before there is a temperature increase. This is shown in the graph of thermal impedance versus pulse duration.
Applications
- LED dimming circuits
- Motor speed controllers
- Logic-level AC load switching
2D Model and Dimensions
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