The STMicroelectronics T835-800B is a high-performance TRIAC (Triode for Alternating Current) designed for AC switching and phase control applications. This TRIAC is part of the STMicroelectronics Snubberless™ series, which is well-suited for applications requiring high bidirectional transient and blocking voltage capability and high thermal cycling performance.

Key Features

• Voltage Capability: The T835-800B is capable of handling voltages up to 800V, making it suitable for a wide range of AC power applications.
• Current Rating: With an RMS on-state current of 8A, this TRIAC can control a significant amount of power, suitable for various domestic and industrial applications.
• Snubberless Technology: This technology allows the device to be used in applications without additional snubber circuits, simplifying design and reducing component count.
• High Commutation Performance: The device is designed for high commutation performance, which is critical for inductive loads where current turn-off can be problematic.
• Gate Trigger Current: The T835-800B has a specified gate trigger current of 35mA maximum, which is low enough to be driven by microcontrollers and other low-power gate drive circuits.
• Thermal Resistance: The TRIAC has a specified junction to case thermal resistance of 1.6°C/W, ensuring efficient heat dissipation during operation.
• Package: It is available in a TO-220AB package, which is widely used and easy to mount on PCBs or heatsinks.

Applications

The T835-800B is ideal for a variety of applications where robust and reliable AC power control is needed. It is commonly used in:

• Lighting control (e.g., dimmers)
• Motor control (e.g., speed controllers)
• Heating control (e.g., electric heaters)
• Inductive load control (e.g., transformers and coils)
• Small home appliances and power tools

With its robust design and versatile features, the STMicroelectronics T835-800B TRIAC is a solid choice for designers looking to implement efficient and reliable AC switching in their circuits.