Leading Power Semiconductor Manufacturer

The Welding Used Module MD is a high-performance module specifically designed for use in welding applications that demand exceptional reliability. Featuring a non-isolated full-pressure junction structure and conforming to international packaging standards, this module is ideal for use in welding equipment. With excellent temperature characteristics and power cycling capabilities, it can operate at a maximum junction temperature of 150°C. It has a voltage rating of up to 2500V and a positive forward voltage drop, making it ideal for demanding applications. Forced air cooling is required for modules under 350A, while modules exceeding 400A can use either air or water cooling. The module is easy to install and maintain, and uses vacuum hydrogen gas protected welding technology for maximum reliability. Choose the Welding Used Module MD for superior performance and reliability in your welding application.

Thyristor Circuit Diagram

LJM D 25A 1600V

  • LJ-MD 
  • Module
  • Diode
  • 25A IT(AV)
  • 1600V VRRM

For Symbols explanation CLICK HERE.

LJ-MT200A200800 - 1600101501.7/600100B
LJ-MT300A300800 - 1600101501.7/900100B
LJ-MT500A500800 - 1600201501.7/1500106B
LJ-MD200A200800 - 1600101501.6/600100B
LJ-MD300A300800 - 1600101501.6/900100B
LJ-MD500A500800 - 1600151501.6/1500106B
For all Part Number:
- dv/dt = 800 V/µs
- di/dt = 100 A/µs
- VGT = 2.5 V
- IH = 100 mA
- Tjm = 125°C
For the datasheet or inquiry, please contact us

For Any Help Or Datasheet

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.