C150C

Thyristors - SCRs

A Thyristor, specifically a Silicon Controlled Rectifier (SCR), is a three-terminal semiconductor device that acts as an electronic switch, allowing current to flow when a voltage is applied. SCRs have been used as a power switch for a range of electronic applications, notably in the power supply industry, where their fast switching capabilities makes them especially suitable for controlling high power AC supplies. The C150C is a specific type of SCR that is designed for use in applications such as high-power AC supplies, under-voltage protection, short-circuit limitation, and dynamic voltage regulation.

C150C Working Principle

The C150C is a two-phase, two-channel SCR with a total maximum power handling capacity of 400 W. Like other SCRs, it switches on and off quickly, making it suitable for applications such as controlling high power AC supplies. To switch the device on, a small current is sent through the gate in the reverse direction, which causes the SCR to transition from a highly conductive “on” state to a highly resistive “off” state. In order to switch the device off, the gate voltage must be cutoff and the SCR will stay in the off state until the voltage is reapplied.

In the C150C, an internal rectifier of the SCR, called an avalanche diode, is designed to prevent any current from flowing from the gate to the main terminals when the device is off. This protects the body of the device from any reverse voltage and makes it ideal for applications in which the power supply may be unreliable. Additionally, the high surge immunity provided by the avalanche diode ensures that the device is protected from any sudden spikes or dips in the power supply.

C150C Application Field

Due to its high power switching capability, the C150C is suitable for many industrial and commercial applications, including power supplies, motor control, lighting control and industrial automation. Additionally, its high surge immunity provides protection against sudden spikes or dips in the power supply and makes it ideally suited for harsh environments. Furthermore, the C150C can be used as an under-voltage protection device, preventing electrical shock from occurring in the event of the power supply becoming too low. Finally, the C150C can be used for dynamic voltage regulation, ensuring that the voltage remains stable even during transient states.

In conclusion, the C150C SCR is an ideal choice for a wide range of electronic applications, thanks to its quick switching capabilities, high power handling capacity, and high surge immunity. Its ability to protect against unexpected changes in the power supply make it particularly suitable for use in harsh environments, while its ability to provide under-voltage protection and dynamic voltage regulation make it a reliable and cost-effective choice.