BT136 600V 4A Triac Thyristor TO 220 Package
The BT136 is a compact bidirectional TRIAC designed for low-to-medium power AC switching and phase control applications. Rated for 600 V repetitive peak off-state voltage and 4 A RMS on-state current, it is ideal for controlling small to moderate AC loads. Its bidirectional conduction and four-quadrant gate triggering make it suitable for driving AC loads in both halves of the waveform. The device comes in a TO-220 package—making it easy to mount and, if needed, attach a heat sink for improved thermal management.
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Features
- 600 V repetitive peak off-state voltage — supports mains AC systems
- 4 A RMS on-state current rating — handles low-to-medium AC loads
- Bidirectional conduction — controls AC power in both directions
- Four-quadrant gate triggering — reliable gating in all AC waveform polarities
- Low gate trigger current requirement — simplifies drive circuitry
- High surge current tolerance — withstands inrush and transient conditions
- TO-220 package — easy mounting and optional heat-sink support
- Compact and robust design — suitable for consumer and industrial applications
Applications
- Small motor control (fans, blowers, drills)
- Light dimming circuits
- Heater and small appliance power regulation
- Solid-state relays and AC switches
- Home automation and control modules
- Phase-angle control for resistive and inductive loads
*Product image for illustration purposes only, actual product may vary.









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