Series:	Snubberless™
Packaging:	Tube
Part Status:	Active
Triac Type:	Alternistor - Snubberless
Voltage - Off State:	800V
Current - On State (It (RMS)) (Max):	4A
Voltage - Gate Trigger (Vgt) (Max):	1.3V
Current - Non Rep. Surge 50, 60Hz (Itsm):	30A, 31A
Current - Gate Trigger (Igt) (Max):	35mA
Current - Hold (Ih) (Max):	35mA
Configuration:	Single
Operating Temperature:	-40°C ~ 150°C (TJ)
Mounting Type:	Through Hole
Package / Case:	TO-220-3
Supplier Device Package:	TO-220AB
Base Part Number:	T435

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Thyristors - TRIACs

T435-800T Application Field and Working Principle

A TRIAC is a type of thyristor characterized by its ability to conduct current in either direction by applying a single voltage. It is a three-terminal electronic component, similar to a transistor, but with two additional terminals called the main gate and the auxiliary gate. The term TRIAC is an acronym for three-terminal-controlled AC switch, meaning a device that can be triggered to shut off or turn on alternating current.The T435-800T type is one of the most widely used TRIACs in the industry. It is a sensitive gate, normally-on TRIAC, capable of carrying maximum load of 800A, suitable for phase control applications such as light and fan dimmers, AC motor speed control and motor starters. This type of TRIAC can be triggered with either DC or AC signals.

Application Field

The T435-800T TRIAC has a wide range of applications, both in residential and industrial applications. In the residential setting, it is usually used for light dimming and AC motor speed control and motor starters. The TRIAC is often used in home automation systems to control the intensity of a light. It can also be used to control small electric motors, such as those found in electric fans, air conditioners, and garbage disposals.In industrial settings, the TRIAC is often used to regulate the power delivered to electric ovens and cooktops. It is also used in AC drives and welding machines, as well as in power supplies, inverters, and AC power control systems.

Working Principle

The T435-800T TRIAC works based on the principle of the thyristor. When a small voltage is applied to the main gate, a small current is drawn that increases to a critical value. This critical current is known as the holding current. The thyristor then turns on, and a large current can then start flowing through the thyristor.When the voltage at the main gate is increased to a certain value, the thyristor will turn off, and the current stops flowing. This is known as the turn-off volt. The turn-off volts values depend on the load and the application. The T435-800T can handle a maximum load of 800A, which makes it suitable for heavy-duty applications.

Conclusion

The T435-800T TRIAC is the perfect choice for critical applications requiring high efficiency and reliability. It is an easy-to-use and economical device that can be used in a wide range of settings, including residential, industrial and automotive. It is an extremely versatile device that offers excellent safety and reliability, making it the ideal choice for any application.

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