BT136-600E 600V 4A Sensitive Gate Triac in TO-220 Package
The BT136-600E is a bidirectional triac switch designed for AC power control. It functions like two SCRs back-to-back, allowing current to flow in both directions once a gate pulse is applied. Structurally, it has three terminals (MT1, MT2 and Gate) and comes in a TO-220 through-hole package, which provides heat dissipation for high-voltage switching.
Its sensitive gate means it can be driven by low-current logic signals, so a small trigger current turns it on. Once triggered, the triac latches on and conducts AC until the current falls below its holding level. The BT136-600E is planar passivated for high-voltage ruggedness and exhibits a low holding current, making it stable under light-load conditions.
In context, this device is used wherever robust AC switching or phase control is needed (e.g. motor speed or light dimming), providing a compact solution for controlling AC loads with digital or analog driving circuits.
Features:
- Direct triggering from low power drivers and logic ICs.
- High blocking voltage capability.
- Low holding current for low current loads and lowest EMI at commutation.
- Planar passivated for voltage ruggedness and reliability.
- Sensitive gate.
- Triggering in all four quadrants.
Pin Configuration:
Specifications:
| Product Attribute | Attribute Value |
| Datasheet | BT136-600E |
| Product Category: | Triacs |
| Series | BT136 |
| Model | BT136-600E |
| Package/Case | TO-220 |
| Mounting Type | Through Hole |
| Number of terminals | 3 |
| Non Repetitive On-State Current: | 27 A |
| Rated Repetitive Off-State Voltage VDRM: | 600 V |
| On-State Current(It (rms)) | 4A |
| Off-State Leakage Current @ VDRM IDRM: | 100 µA |
| On-State Voltage: | 1.7 V |
| Holding Current Ih Max: | 15 mA |
| Gate Trigger Voltage – Vgt: | 1.5 V |
| Gate Trigger Current – Igt: | 25 mA |
| Operating Temperature: | -40°C ~ 125°C |
