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Russian Low Frequency Diode Д133-500 series

Introducing the Д133-500 Power Diode: a semiconductor, power, and rectifier diode with a low-frequency, diffusion-based, capsule design. It is meticulously crafted for operation in both direct current (DC) and alternating current (AC) power circuits, supporting frequencies up to 500 Hz and currents not exceeding 500 A across various general-purpose electrical applications.

This power diode, designated as Д133-500, finds its applications in powerful DC electric drives within industrial and transportation systems, as well as in rectifiers for electrolysis and electroplating, including uncontrolled and semi-controlled rectifier bridges.

Key design features include a sealed metal-ceramic housing in a capsule design, facilitating series and parallel connections. The flat anode and cathode bases, with polarity clearly indicated by a symbol on the diode body, ensure ease of installation. Effective cooling is achieved through forced cooling mechanisms, and the diode is housed in a PD32-type casing, compatible with recommended coolants such as O143, O232, and O242.

Operating seamlessly in ambient temperatures ranging from -60 to +50 °C, the Д133-500 power diode is produced in climatic versions “UHL” and “T,” falling under placement category “2” as per GOST 15150-69 standards.

The diode exhibits exceptional environmental endurance, with resistance to sinusoidal vibrations in the frequency range of 1-100 Hz, featuring an acceleration of 49 m/s². Additionally, it can withstand single shocks lasting 50 ms with an acceleration of 39.2 m/s².

When it comes to dimensions, the diode boasts a diameter of 54 mm and a height of 20 mm, with a weight not exceeding 180 g. Classified under the quality category “QTK,” it adheres to technical specifications TU16-2006 IEAL.432000.056TU.

For those seeking alternatives, foreign analogues of the D133-500-12 power diode include 501PDB-200, 501PDB-220, 501PDB-240, 501PDB-260, 501PDB-280, 501PDB-300, 501V120, 501V140, 501V160, 501V180, and 501V200.


LJД 1 3 3 500 12 

  • LJ-MD 
  • Д Diode
  • 1  Sequential Modification Number
  • 3  Diameter Designation of the Casing according to GOST 20859.1-89
  • 3 Designation of the Constructional Design of the casing according to GOST 20859.1-89
  • 500 Maximum permissible Average Forward Current, in Amperes
  • 12  Class based on Repetitive Reverse Voltage

For Symbols explanation CLICK HERE.

Maximum Operating Parameters of DiodesValues of Electrical Characteristics of Diodes
Tj = -60 ~ +175°C
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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.


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