Overview
The BT139-800,127 is a four-quadrant TRIAC (Triode for Alternating Current) produced by WeEn Semiconductors. This component is designed to handle medium power switching of loads, making it suitable for a variety of applications involving AC power. The BT139 can operate with both positive and negative currents and can be triggered by either a positive or negative gate current, enhancing its versatility in switching AC loads.
Key Specifications
| Parameter | Value |
|---|---|
| Voltage Rating (V) | 800V |
| Continuous Current (I(T)(RMS)) | 16A |
| Peak Current (I(TSM) 50 Hz) | 155A |
| Gate Trigger Voltage (V(GT)) | 1.5V |
| Gate Trigger Current (I(GT)) | 35mA (typical), 22mA (minimum) |
| Holding Current (I(H)) | 45mA |
| On-State Voltage | 1.2V |
| Package Type | TO-220AB |
Key Features
- Four-quadrant operation, allowing it to switch both positive and negative currents and operate with a positive or negative gate current.
- High voltage and current ratings: 800V and 16A continuous current.
- Insensitive gate for noise immunity.
- TO-220AB package with up to 20W power dissipation.
- Able to handle high currents for short durations.
Applications
- Motor controllers: For controlling the speed and direction of AC motors.
- AC load switching: Suitable for switching various AC loads efficiently.
- Pulse width modulators: Used in applications requiring precise control over the power delivered to the load.
- Medium power switching: Ideal for applications that require medium power handling capabilities.
Q & A
- What is the voltage rating of the BT139-800,127 TRIAC? The voltage rating of the BT139-800,127 TRIAC is 800V.
- What is the continuous current rating of the BT139-800,127? The continuous current rating is 16A.
- What is the gate trigger voltage for the BT139-800,127? The gate trigger voltage is 1.5V.
- What is the gate trigger current for the BT139-800,127? The gate trigger current is typically 35mA, with a minimum of 22mA.
- What package type does the BT139-800,127 come in? The BT139-800,127 comes in a TO-220AB package.
- What are the key applications of the BT139-800,127 TRIAC? Key applications include motor controllers, AC load switching, pulse width modulators, and medium power switching.
- How does the BT139-800,127 differ from an SCR? Unlike SCRs, which can only operate in one direction, the BT139-800,127 can switch loads that are both positive and negative, operating in all four quadrants.
- What is the holding current for the BT139-800,127? The holding current is 45mA.
- Can the BT139-800,127 handle high currents for short durations? Yes, the BT139-800,127 can handle high currents for short durations, as seen in the ITSM vs pulse width graph.
- What is the on-state voltage of the BT139-800,127? The on-state voltage is 1.2V.
