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Russian Low Frequency Thyristor T2-320 series

The T2-320-10 thyristor is a power semiconductor device with a silicon diffusion p-n-p-n structure, designed for low-frequency applications. It is intended for operation in power circuits of both direct and alternating current with frequencies up to 500 Hz and a current not exceeding 320 A.

The power thyristor T2-320-10 finds applications in static electric drive converters, high-voltage rectifier-inverter substations for transmission lines, as well as in power circuits of various general-purpose direct and alternating current installations.

Constructed in a metal-ceramic housing with a pill-like design, the thyristor features flat anode and cathode bases. The polarity is determined by a symbol marked on the thyristor’s housing. Forced air cooling is required, and the recommended cooler types are OA-026 and OM-103.

The thyristor can operate in ambient temperatures ranging from -50 to +60 °C. It is produced in climatic versions “UHL” for placement category “2” and “T” for placement category “3” according to GOST 15150-69.

The T2-320 power thyristor can withstand sinusoidal vibrations in the frequency range of 1-100 Hz with an acceleration of 49 m/s² and repeated shocks lasting 2-15 ms with an acceleration of 147 m/s².

Dimensional specifications include:

  • Thyristor diameter: 73 mm
  • Contact surface diameter: 40 mm, 46 mm
  • Height: 22 mm

The thyristor’s mass does not exceed 310 g.

Thyristor Circuit Diagram

LJT 2 320 10 

  • LJ-MD 
  • Thyristor
  • 2 Serial Number of the Structural Design
  • 320 Number Equal to the Maximum Current Value in the Open State in Amperes
  • 10 Number indicating the class of Repetitive Voltage in Hundreds of Volts

For Symbols explanation CLICK HERE.

Maximum permissible values of parameters at Tp=25°CParameter values at Tp=25°C
Tj = -60 ~ +125°C
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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.


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