CM431290 Discrete Semiconductor Products

CM431290 Application Field and Working Principle

• Thyristors - SCRs - Modules:

  The CM431290 is a four quadrant triac, which is a type of silicon controlled rectifier (SCR). The four-quadrant triac is an electronic switch designed to control alternating current (AC). The CM431290 can control either the current output or the voltage output of an AC power source, depending on the type of load. The typical application field of the CM431290 is for motor speed control and lighting control.

  The working of the CM431290 is based on the principle of a thyristor. A thyristor is a type of semiconductor device composed of four layers of alternating p-type and n-type silicon, which acts as a rectifier. When a positive voltage is applied to the Gate (G) terminal, it triggers the thyristor and causes it to conduct, allowing the current to flow from the Anode (A) to Cathode (C). Once triggered, the thyristor continues to conduct until the current reaches zero, as in the case of an AC waveform. The four-quadrant triac has two additional terminals; the Gate Trigger (GT) and the Control (C), which are used to control the conduction of the output current.

  The CM431290 is very useful for controlling AC power outputs, such as controlling the current or voltage of a motor or lighting circuit. The CM431290 can also be used in industrial process control applications such as switching magnetic relays and controlling pumps. The CM431290 is also suitable for applications that require high-speed switching and fast response time. Additionally, since the CM431290 is an efficient and cost-effective solution, it is increasingly chosen over other more expensive options.