Product Description
The bt139-800D is a high-performance triac,designed for AC switching and phase control applications.It features a 800V blocking voltage and a 16A current rating, making it ideal for power control in industrial and consumer electronics. With high surge current tolerance, low gate trigger requirements, and reliable performance, the BT139-800D is widely used in motor controls, lighting dimmers, heating systems, and solid-state relays.
Mechanical Data
- Current Rating: 16A (RMS)
- Voltage Rating: 800V (repetitive peak off-state voltage)
- Gate Trigger Current (I_GT):5mA (typical)
- On-State Voltage Drop (V_T): 1.6V (at 20A)
- Package: TO-220C
Features&Advantages
- High Voltage Capability – Supports up to 800V repetitive peak off-state voltage
- Moderate On-State Current – Rated for 16A RMS on-state current
- Low Gate Triggering Requirements – Can be triggered with a relatively low gate current, simplifying control circuit design.
- Sensitive Gate Triggering – Supports gate triggering in all four quadrants, enhancing triggering flexibility.
- TO-220 Package – Standard TO-220 form factor for easy heatsinking and PCB mounting.
- High Surge Current Capability – Withstands up to 140A peak non-repetitive surge current, ideal for inductive loads.
Typical Applications
- Dimmer circuits (for incandescent/LED lighting)
- AC motor speed control
- Solid-state relays (SSRs)
- Heating control systems
- Power tools and appliances
BT139-800D Pinout
The BT139-800D is a 4-quadrant triac packaged in a TO-220C. It has three pins, and its pinout is as follows:
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 (T1 / MT1) | Main Terminal 1 | Connected to one side of the AC load. |
| 2 (Gate) | Gate | Trigger input (controls the switching). |
| 3 (T2 / MT2) | Main Terminal 2 | Connected to the other side of the AC supply. |
BT139-800D Datasheet
More Information
For more product details, please visit our official website:
https://en.semiware.com/product-4q-triac/bt139-800d
About semiware
Semiware has a comprehensive product lineup of circuit protection device products. The company leverages its technology in the semiconductor field and application background in end products to serve customers in the electronics, automotive and industrial markets. For more information, please visit semiware official website: https://en.semiware.com/
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