Product Details



A thyristor is a semiconductor device used for controlling and switching electric currents in various electronic circuits and power systems. It belongs to the family of silicon-controlled rectifiers (SCRs) and is a four-layer, three-terminal semiconductor device with three electrodes: anode, cathode, and gate.

Key Features of Thyristor:

  1. Switching Function: Thyristors are primarily used as switching devices, allowing electric currents to flow in one direction only when triggered by a control signal applied to the gate terminal.

  2. Controlled Conduction: They exhibit a unique behavior where they remain in the off state until a trigger signal is applied to the gate terminal. Once triggered, they conduct current until the current flowing through them drops below a certain threshold.

  3. High Voltage and Current Handling: They are capable of handling high voltages and currents, making them suitable for use in high-power applications such as motor control, power distribution, and electrical grids.

  4. Fast Switching Speeds: Modern thyristors can switch on and off rapidly, allowing for precise control of power flow and enabling efficient operation in high-frequency applications.

  5. Temperature and Voltage Stability: They exhibit stable performance over a wide range of operating temperatures and voltages, ensuring reliable operation in diverse environments.

  6. Versatility: They come in various types and configurations, including silicon-controlled rectifiers (SCRs), gate turn-off thyristors (GTOs), and insulated gate bipolar transistors (IGBTs), each tailored for specific applications and performance requirements.


Trusting HKFrequency’s thyristor means placing confidence in our unwavering commitment to excellence, innovation, and reliability in the realm of power electronics. With a proven track record of delivering high-quality semiconductor devices, we stand out as a trusted partner for industries requiring precise control, efficiency, and durability in their electronic systems.

Our thyristors are engineered to the highest standards, incorporating cutting-edge technologies and rigorous quality control measures to ensure optimal performance and longevity. Whether used in motor drives, power supplies, industrial automation, or renewable energy systems, our thyristors consistently demonstrate unmatched reliability and efficiency, even in the most demanding applications.





Thyristors are used in a wide range of applications, including power control, motor drives, lighting control, heating systems, voltage regulation circuits, industrial automation, power transmission and distribution, renewable energy systems, and more. They play a crucial role in modern electronics and power systems, enabling efficient and reliable operation across various industries and applications.


  1. Power Control: Thyristors are widely used in power control applications such as motor drives, lighting control, heating systems, and voltage regulation circuits.

  2. Power Supplies: Thyristors are employed in AC and DC power supply circuits for rectification, voltage regulation, and power factor correction.

  3. Industrial Automation: Thyristors play a vital role in industrial automation systems for controlling machinery, actuators, and other electrical devices.

  4. Power Transmission and Distribution: Thyristors are used in power transmission and distribution systems for voltage and reactive power control, grid synchronization, and fault current limiting.