CQ220I-12M

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Thyristors - TRIACs

A TRiode for Alternating Current (TRIAC) is a three-terminal semiconductor device designed exclusively for controlling alternating current (AC) circuits. It mainly consists of a p-type and an n-type semiconductor material connected by a metal plate to form a junction. The three terminals are labelled as main terminal (MT), gate terminal (GT) and the other main terminal (MT\'), where MT is the first main terminal, usually MT and MT\' are tied together in many applications.

CQ220I-12M is a specially designed bidirectional TRIAC from Crysdale semiconductor with an integrated gate voltage protection circuit. It is constructed using high-performance silicon chips with a low turn-on and holding current. It is used in power control applications and is suitable for medium power applications. It is optimized for controlling high voltage AC switches, drivers and inductive loads.

Application field

CQ220I-12M is mainly used in industrial, automotive and home appliance applications. It is suitable for controlling medium power AC circuits ranging from 100 VAC to 500 VAC. It can also be used in high power handling applications such as lighting, power switching, motor speed control, electricity absorption and voltage regulation. It has excellent compatibility with solid state devices and can be used for different power levels.

Working principle

The TRIAC works according to the principle of a switch-controlled thyristor and shows a fast switching speed with an efficient control of AC power. It is designed by connecting two thyristors in anti-parallel, which provides bidirectional current conduction capability, allowing current to flow through either direction. The TRIAC is triggered when the voltage across the gate terminal (GT) and main terminal (MT) is greater than the holding current. The holding current required to trigger the TRIAC is determined by the breakover voltage of the thyristor. Once the TRIAC is triggered, the voltage at the MT is converted to a nearly constant DC value, depending on the load, and current flows through both thyristors.

The TRIAC gate is triggered using a positive or negative gate current. A positive voltage is applied to the gate terminal to turn on the TRIAC, while a negative voltage is applied to the gate terminal to turn off the TRIAC. The total holding current of the TRIAC depends on the gate voltage, load current, and the on-state voltage drop of the TRIAC. The TRIAC can be used for both AC and DC power control applications.

Conclusion

In conclusion, CQ220I-12M is a bidirectional TRIAC from Crysdale semiconductor with an integrated gate voltage protection circuit. It is suitable for controlling medium power AC circuits and can be used for a variety of power control applications such as lighting, motor speed control, electricity absorption and voltage regulation. The TRIAC is triggered when the voltage across the gate terminal and main terminal is greater than the holding current, and it can be turned on or off by applying a positive or negative voltage to the gate terminal.

The specific data is subject to PDF, and the above content is for reference