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Phase Control Thyristors (Stud/ Flat Type)

A Thyristor is a solid-state semiconductor device with four layers of alternating P- and N-type materials. It acts exclusively as a bistable switch, conducting when the gate receives a current trigger, and continuing to conduct until the voltage across the device is reversed biased, or until the voltage is removed (by some other means). There are two designs, differing in what triggers the conducting state. In a three-lead thyristor, a small current on its Gate lead controls the larger current of the Anode to Cathode path. In a two-lead thyristor, conduction begins when the potential difference between the Anode and Cathode themselves is sufficiently large (breakdown voltage).

Some sources define silicon-controlled rectifier (SCR) and thyristor as synonymous. Other sources define thyristors as more complex devices that incorporate at least four layers of alternating N-type and P-type substrate.

The first thyristor devices were released commercially in 1956. Because thyristors can control a relatively large amount of power and voltage with a small device, they find wide application in control of electric power, ranging from light dimmers and electric motor speed control to high-voltage direct-current power transmission. Thyristors may be used in power-switching circuits, relay-replacement circuits, inverter circuits, oscillator circuits, level-detector circuits, chopper circuits, light-dimming circuits, low-cost timer circuits, logic circuits, speed-control circuits, phase-control circuits, etc. Originally, thyristors relied only on current reversal to turn them off, making them difficult to apply for direct current; newer device types can be turned on and off through the control gate signal. The latter is known as a gate turn-off thyristor, or GTO thyristor. Unlike transistors, thyristors have a two-valued switching characteristic, meaning that a thyristor can only be fully on or off, while a transistor can lie in between on and off states. This makes a thyristor unsuitable as an analog amplifier, but useful as a switch.

Thyristors or SCRs (Silicon Controlled Rectifiers)


  • UPS
  • Welding
  • Power Supplies
  • VAR Generators
  • Transportation
  • Traction Inverter
  • Medium Voltage Inverter
  • Flexible AC Transmission
  • Medical
  • Motor control
  • Battery Chargers
  • UPS Systems
  • Induction Heating
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Innovative Solutions: Your Trusted Source for Stud Type Thyristors

Welcome to Insel Rectifiers, your trusted source for innovative solutions in the realm of power electronics. As a leading Stud Thyristor manufacturer and supplier, we take pride in delivering cutting-edge technology and reliable performance to industries around the globe.

Stud Type Thyristors: Precision and Power Unleashed

At Insel Rectifiers, we specialize in producing Stud-Type Thyristors, essential components in power control circuits. Our Stud Thyristors are meticulously crafted to meet the highest industry standards, ensuring precision and efficiency in power applications. Whether you need robust components for industrial machinery or advanced solutions for electronic devices, our Stud-Type Thyristors are engineered to deliver optimal performance.

Trusted Manufacturer and Supplier

As a trusted Stud Thyristor manufacturer, we have established ourselves as a reliable source of high-quality power semiconductor devices. Our commitment to excellence is evident in every product we deliver, and our Stud Thyristors are no exception. Rigorous testing procedures and quality control measures are implemented throughout the manufacturing process to guarantee the reliability and longevity of our components.

Flat Thyristors: Elevating Efficiency in Power Control

In addition to Stud-Type Thyristors, Insel Rectifiers is also a leading supplier of Flat Thyristors. These compact yet powerful devices play a crucial role in enhancing the efficiency of power control circuits. Whether used in rectifiers, inverters, or other electronic applications, our Flat Thyristors offer a versatile solution for various industries.

Innovation at the Core

What sets Insel Rectifiers apart is our commitment to innovation. We continuously strive to push the boundaries of technology, incorporating the latest advancements in our products. Our Stud Thyristors and Flat Thyristors reflect our dedication to providing innovative solutions that meet the evolving needs of the power electronics industry.

Customer-Centric Approach

At Insel Rectifiers, we understand the importance of tailored solutions. As a Stud Thyristor supplier, we work closely with our clients to understand their specific requirements and provide customized solutions. Our customer-centric approach ensures that you receive high-quality components and the support and expertise needed to optimize your power control systems.

Discover the Power of Insel Rectifiers

Whether you are in search of Stud-Type Thyristors or Flat Thyristors, Insel Rectifiers stands as your reliable partner in power solutions. Our commitment to innovation, quality, and customer satisfaction makes us the go-to source for industries seeking top-notch power semiconductor devices. Explore the world of innovative solutions with Insel Rectifiers.