The T435-800B is a high-performance triac manufactured by STMicroelectronics, designed to manage AC loads with a current up to 4 A. It operates at a maximum voltage of 800V, making it suitable for a wide range of applications such as motor control, lighting control, and heating regulation in both domestic and industrial environments.

Key Features

• Current Capability: The T435-800B can handle continuous on-state currents up to 4 A, with peak non-repetitive surge currents reaching up to 30 A, ensuring robust performance for heavy-duty operations.
• High Voltage Rating: With an 800V peak off-state voltage, this triac is capable of withstanding high voltage fluctuations, which is essential for mains voltage applications.
• Gate Trigger Current: A low gate trigger current of 5 mA (I<sub>GT) makes the T435-800B easy to drive with microcontrollers and other logic-level devices.
• Thermal Resistance: The triac features a junction-to-case thermal resistance of 60 °C/W, contributing to its reliability and longevity by ensuring efficient heat dissipation.

Applications

The versatility of the T435-800B enables it to be used in a variety of AC power control applications. Its primary uses include:

• Home appliances such as electric heaters, ovens, and dimmer circuits for lighting systems.
• Industrial tools including electric motors, solenoid/valve controls, and small transformers for control circuits.
• AC phase control operations, where precise control of current is required.

Quality and Reliability

STMicroelectronics ensures that the T435-800B meets strict quality standards, providing a reliable solution for designers and engineers. The triac comes in a TO-220AB package, known for its robustness and excellent thermal performance. Additionally, it complies with environmental standards, making it a suitable choice for eco-conscious applications.