Si Thyristors: Precise Current Control for Demanding Applications

Silicon thyristors are semiconductor-based switches used in a wide range of applications requiring precise control of high currents and voltages. 

At alfatec, you’ll find a broad selection of Si thyristors from Techsem, known for their robustness and durability, designed for demanding applications in power transmission, industrial automation, and more. 

These products offer high reliability, precise control, and top-tier performance

Nahaufnahme eines Silizium-basierten Thyristors, einem aktiven Halbleiterbauelement zur präzisen Steuerung und Regelung in leistungselektronischen Systemen.
  • Techsem Capsule Cell Thyristors: These thyristors are designed for the highest power demands, offering voltage ratings from 400 V to 6500 V and current ratings from 400 A to 5200 A. They are ideal for high-voltage direct current (HVDC) transmission and large industrial drives.
  • Techsem Thyristor Power Modules: These modules integrate multiple thyristors into a compact housing and offer voltage ratings from 1200 V to 2500 V and current ratings from 26 A to 570 A. They are ideal for motor control, inverters, and welding applications.
  • Techsem High-Current Power Modules: Specifically developed for high-current applications, these modules offer voltage ratings from 1200 V to 2500 V and current ratings from 400 A to 500 A. 

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Click here to go directly to our selection and data sheets for product series in the Si Thyristors section.

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Advantages
High reliability and long service life
Precise control of current and voltage
Compact design
Easy integration
High surge current capability
Application Areas for Si Thyristors and Modules
High-voltage direct current (HVDC) transmission
Industrial drive systems
Motor control
Inverters
Rectifiers
Welding technology
Renewable energy generation
Power supplies

Key Technical Parameters 

  • Blocking voltage: Up to 6500 V 
  • Forward current: Up to 5200 A 
  • Holding current: Low values for efficient operation 
  • Gate trigger current: Low requirements for easy integration 

Materials: 

Techsem uses high-quality silicon materials to ensure performance and reliability.

Thyristor Power Modules: Compact Solutions for High Power

Thyristor power modules offer a compact and efficient solution for high-power applications. By integrating multiple thyristors into a single housing, they reduce assembly and wiring effort. 

  • MTC Series: alfatec offers a wide range of MTC thyristor power modules, including MTC40, MTC90, MTC160, MTC200, MTC250, and MTC500. These modules cover a broad range of current and voltage requirements and are ideal for industrial automation and renewable energy generation. 

Our partner in the field of Si thyristors

TECHSEM

Our Chinese partner TECHSEM, with almost 60 years of experience, focuses on power semiconductors in the field of diode and thyristor modules as well as bridge rectifiers. Their core advantage in chip design makes them a leading supplier in the industry, while focussing on honest and long-term business relationships.

 

Go to the manufacturer

Logo Techsem

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See for yourself the quality and performance of our Si thyristors. Request a non-binding quote today or download the data sheets.

alfatec – your partner for high-quality electronic components

As your expert partner for electronic components, alfatec supports you in selecting the right Si thyristors for your applications. We offer comprehensive advice and are happy to answer any questions you may have about power modules.

Do you have questions about our Si thyristors or would you like a personal consultation? Feel free to contact us.