CQ218-45B

A TRIAC is an acronym for “Triode Alternating Current SCR”, typically referred to as a thyristor. It is a 3-terminal power switching device based on the principle of two-way conduction. A TRIAC is essentially a SCR built on a silicon substrate and having three terminals, instead of the two terminals of a SCR.

The CQ218-45B, developed by CQ Corporation, is a TRIAC that is used for controlling the power of AC circuits. It is commonly used in industrial applications such as electric ovens and dishwashers, and is capable of handling up to 1.5kV AC, making it a suitable device for high-voltage applications. The CQ218-45B has a reverse voltage rating of 800V, a forward voltage of 250V, and a maximum current rating of 45A.

The working principle of the CQ218-45B is quite simple. When AC power is applied to the device, the current continuously alternates between positive and negative voltage. This alternating current allows the device to effectively regulate and control the power of the connected AC circuit. The device works by converting the AC power into a regulated DC current, thereby reducing the risk of overloading the circuit with excess power.

The CQ218-45B is an ideal device for a variety of industrial applications that require precise power control. It is capable of operating at high frequencies, making it suitable for applications such as motor speed control and lighting dimming. The device is also capable of handling high voltage and currents, making it well suited for heavy-duty applications such as industrial heating. Additionally, the CQ218-45B is compatible with a range of standard industry-standard accessories, including diodes, transistors, resistors, and capacitors.

In summary, the CQ218-45B TRIAC is a versatile and powerful device that is capable of providing precise power control in a wide range of industrial applications. Its reverse voltage rating of 800V, a forward voltage of 250V, and a maximum current rating of 45A make it an ideal choice for heavy duty and high voltage applications. Additionally, its compatibility with a range of accessories makes it a popular choice for a variety of projects.