BCR20CM-12LB#BB0

Thyristors – TRIACs: BCR20CM-12LB#BB0 Application Field and Working Principle

Thyristors are a type of semiconductor device which has two junction bipol(s)ar transistors. These are used for controlling current flow in an electrical circuit. A TRIAC is a type of thyristor which is used for controlling signal transmission from one point to another. The BCR20CM-12LB#BB0 is a triac which is designed for controlling high current up to 5 Amps with unidirectional blocking ability up to 600V.

Application Fields

The BCR20CM-12LB#BB0 can be used in many applications which require high current. These applications include motor drives, DC to AC converter, HVAC control, lighting control, industrial automation, and other similar applications. It is especially suitable for applications that require high voltage and fast switching time.

Working Principle

The BCR20CM-12LB#BB0 is a static device which is composed of two thyristors connected with a common gate controlled by current. The triac works by applying an appropriate gate current to the two thyristors. This current is used to change their resistance and thus control the current flow. When a gate current is applied, the voltage between the gate and the thyristors changes which causes the thyristors to turn on and off. When the thyristors are in the off state, the current through the device is blocked and the device is in its unidirectional blocking state. When the thyristors are in the on state, the current can flow in either direction, from anode to cathode or from cathode to anode.

When the gate current is removed, the voltage between the gate and the thyristors remains constant and the thyristors remain in the same state. This ensures that the current does not change when the device is in the unidirectional blocking state. The BCR20CM-12LB#BB0 has Zero-Crossing Detection, which ensures that the thyristors will not turn on or off abruptly. This is important for applications where electricity is applied in pulses, such as in motor drives. Thus, the BCR20CM-12LB#BB0 provides fast switching and unidirectional blocking in applications that require high current.

Conclusion

The BCR20CM-12LB#BB0 is a type of triac which is optimized for high current applications. Its unidirectional blocking ability and fast switching time make it suitable for motor drives, HVAC control, lighting control, and other industrial applications. It is important to note that it has Zero-Crossing Detection which ensures that it will not turn on or off abruptly.