BTA40-800B

The BTA40-800B is a high-performance triac (triode for alternating current) manufactured by STMicroelectronics, designed for use in various AC switching applications. This component is particularly well-suited for controlling loads in lighting, heating, and motor control systems.

Key Features:

1. Voltage and Current Ratings:

   • The BTA40-800B is rated for a maximum repetitive peak off-state voltage (V_RRM) of 800 volts, making it suitable for high-voltage applications.
   • It can handle a maximum on-state current (I_T(RMS)) of 40 amperes, allowing it to control substantial loads without overheating.

2. Package Type:

   • The device is typically housed in a TO-220 package, which provides good thermal performance and allows for easy mounting on heatsinks. This is crucial for maintaining operational stability under high load conditions.

3. Gate Triggering:

   • The triac features a gate trigger current (I_GT) that is relatively low, enabling it to be triggered by low-power control circuits. This makes it versatile for use in various control applications, including microcontroller interfacing.

4. Thermal Characteristics:

   • The BTA40-800B has a low thermal resistance, which helps in dissipating heat effectively. This is essential for maintaining performance and reliability during continuous operation.

5. Applications:

   • Common applications include light dimmers, motor speed controls, and heating control systems. Its robust design allows it to be used in both residential and industrial environments.

6. Isolation and Safety:

   • The device is designed with isolation features that help protect sensitive control circuits from high voltages present in the load side.

7. Performance:

   • The BTA40-800B exhibits excellent switching characteristics, with fast turn-on and turn-off times, which enhances its efficiency in AC control applications.

8. Compliance and Standards:

   • The component complies with various international standards, ensuring its reliability and safety in different applications.

Summary:

The BTA40-800B from STMicroelectronics is a robust and versatile triac suitable for high-voltage and high-current AC applications. Its combination of high voltage and current ratings, low gate trigger current, and efficient thermal management makes it an ideal choice for a wide range of electronic control systems. Whether used in consumer electronics or industrial machinery, the BTA40-800B provides reliable performance and durability.