The BT136 TO-220 TRIAC – 600V 4A is a general-purpose TRIAC suitable for AC switching applications. Capable of handling up to 4A continuous current and up to 600V, it’s ideal for medium-power AC loads like dimmers, motor speed controllers, and other power management circuits. Its gate can be triggered with low current (just 10mA), making it compatible with popular microcontrollers such as Arduino and Raspberry Pi. Since it’s a bidirectional switch, it can conduct in both directions once triggered—making it highly efficient for alternating current (AC) control.
Specifications:
| Parameter | Value |
|---|---|
| Model | BT136 |
| Mounting Type | Through Hole |
| Case/Package | TO 220 |
| Maximum Terminal Current | 4A |
| Gate Trigger Voltage (Vgt) | 1.4V to 1.5V |
| Gate Trigger Current(Igt) | <10mA (Series D/E are extra sensitive) |
| Operating Junction Temperature(Tj) (°C) | 0°C to 125°C |
Features:
- Bidirectional AC control switch
- Compatible with 3.3V and 5V microcontroller logic
- Triggerable by both positive and negative gate pulses
- Supports up to 4A terminal current
- Compact TO-220 package for easy heatsink mounting
- Ideal for AC dimming, fan/motor speed control, and power control projects
Package Includes:
- 1 × BT136 TO-220 TRIAC – 600V 4A


















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