Leading Power Semiconductor Manufacturer


Introducing our cutting-edge Stud Fast Thyristors, meticulously designed to excel in high-speed switching applications, where precision and reliability are paramount. These thyristors feature a robust stud configuration, ensuring optimal performance and durability even under demanding conditions. With their advanced technology, our Stud Fast Thyristors exhibit exceptional dynamic characteristics, enabling swift and accurate switching operations. Whether it’s for high-frequency power conversion or fast switching circuits, our thyristors deliver unparalleled performance. Additionally, they offer superior surge capabilities, providing reliable protection against sudden power surges. Our Stud Fast Thyristors are available in a standard package, guaranteeing seamless integration and compatibility. Experience the unmatched speed and reliability of our Stud Fast Thyristors, setting new benchmarks in high-speed power control applications.

Thyristor Circuit Diagram

LJS 50 RIA 120 M

  • LJ-MD 
  • S None = Standard Thyristor / S = Triac Thyristor / K = Fast Thyristor
  • 50 Current code: IT(AV)
  • RIA series
  • 120 * 10 = VRRM
  • Metric Device

For Symbols explanation CLICK HERE.


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Looking to revolutionize your power control solutions? Look no further. At LJ-MD, we specialize in delivering cutting-edge diode and thyristor technologies that meet the highest industry standards. With a strong focus on innovation, reliability, and performance, our products are designed to excel in a wide range of power applications.


From high surge current capability to precise power control, our diodes and thyristors offer exceptional features that cater to your specific needs. Whether you require efficient rectification, fast switching, or precise phase control, our products deliver reliable and precise results.


At LJ-MD, we understand that every project is unique. That’s why we provide personalized support and guidance to ensure you find the perfect solution for your requirements. Our team of experts is always ready to assist you in selecting the right product and providing technical assistance.


Don’t miss out on the opportunity to optimize your power control systems. Contact us today to discuss your project requirements, and let us help you find the ideal diode or thyristor solution to drive your success.

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We are open to manufacturing products at our production facilities according to your requests and technical specifications.