STMicroelectronics T405-800B-TR Triac

The T405-800B-TR from STMicroelectronics is a high-performance triac designed for AC power control applications. This triac belongs to STMicroelectronics' Snubberless™ series, which is specifically engineered to enhance the performance of the device in applications that are sensitive to electromagnetic disturbances.

Key Features

• Current Rating: The T405-800B-TR can handle currents up to 4A, making it suitable for a wide range of applications including motor control, lighting control, and heating regulation.
• Repetitive Peak Off-State Voltage: With an 800V repetitive peak off-state voltage (VDRM/VRRM), this triac provides a robust solution for applications requiring high voltage operation.
• Snubberless Technology: The Snubberless™ design minimizes the need for external snubber circuits in most applications, simplifying design and reducing component count.
• Gate Trigger Current: A low gate trigger current (IGT) ensures that the triac can be easily driven by microcontrollers and other low-power gate trigger circuits.
• Package: The T405-800B-TR comes in a DPAK (TO-252) surface-mount package, which is compact and suitable for high-density PCB designs.
• Temperature Range: It operates over a wide temperature range, maintaining functionality from -40°C to +125°C, allowing for use in harsh environments.

Applications

The T405-800B-TR triac is versatile and can be used in a variety of AC power control applications, such as:

• Home appliances (e.g., washing machines, vacuum cleaners, and kitchen appliances)
• Lighting systems (e.g., dimmers and smart lighting solutions)
• Motor control (e.g., fans, power tools, and electric motors)
• Heating systems (e.g., electric heaters and thermostats)

Conclusion

With its combination of high voltage capability, low gate trigger current, and Snubberless™ technology, the T405-800B-TR from STMicroelectronics is an excellent choice for designers looking to create efficient, reliable, and cost-effective AC power control systems. Its compact surface-mount package further enhances its appeal for modern, space-constrained applications.