Leading Power Semiconductor Manufacturer

Introducing our innovative Stud Triac Thyristors, engineered to deliver exceptional performance and precise control in a wide range of power applications. These thyristors feature a stud configuration, ensuring robustness and reliability in high-current environments. With their advanced design, our Stud Triac Thyristors exhibit excellent dynamic characteristics, allowing for accurate and efficient power control. Furthermore, they offer superior surge capabilities, making them ideal for applications that experience varying loads or sudden power surges. Our thyristors are available in a standard package, ensuring compatibility and ease of use. Additionally, we offer a metric device version for seamless integration into metric-based systems. Experience reliable and precise power control with our Stud Triac Thyristors, setting new standards for performance and versatility.

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.