TypeIF[AV] [A]VRRM [V]IRRM [mA]trr [us]IF[RMS] [A]IFSM [kA]DatasheetOffer

FeaturesTypical ApplicationPDDN-Notes
  1. Isolated mounting base, 2500V ~

  2. International standard package

  3. Pressure contact technology with increased power cycling capability

  4. Air-cooling for up to 200A. for over 300A, air-cooling or water-cooling

  5. Simple mounting and easy maintenance

  6. Space and weight saving

  1. Inverter

  2. Inductive heating

  3. Chopper

  • IGT VGT VTM VFM IH are for 25 ℃, others are for Tj=Tjm, unless stated otherwise.


TypeIT[AV] [A]VDRM/VRRM [V]IDRM/IRRM [mA]IGT [mA]VGT [V]IH [mA]dv/dt [V/us]di/dt [A/us]tq [us]IT[RMS] [A]ITSM [kA]DatasheetOffer

Overview of Fast Turn Off Thyristor/Fast Recovery Diode Module

The Fast Turnoff Thyristor (FTO) and Fast Recovery Diode (FRD) modules are key components of power electronic equipment, with fast response and high-efficiency characteristics. They are widely used in power supplies, motor drives, welding machines, frequency converters, and other fields. FTO can quickly switch from conduction to cutoff when needed, controlling current, suitable for motor drive and power control. FRD can quickly handle reverse currents and is suitable for rectifier circuits and inverter power supplies. These modules achieve high reliability and performance through special packaging and circuit design and are the core components of modern power electronic equipment.


Characteristics of Fast Turn Off Thyristor/Fast Recovery Diode Module:

1. Fast switching speed: Fast turn-off thyristors (FTOs) have fast turn-off capabilities and can complete switching operations at the microsecond level. This fast switching speed makes FTO very useful in applications that require fast current switching, such as motor drive and power control. A fast Recovery Diode (FRD) can quickly recover from the on to the off state, handling reverse current. This fast recovery feature makes FRD very effective in applications that require fast processing of reverse currents, such as rectifier circuits and inverter power supplies.

2. High efficiency: FTO and FRD can reduce energy loss during power conversion, improving overall efficiency due to their fast switching speed.

3. High reliability: FTO and FRD modules are typically guaranteed to be highly reliable through special packaging techniques and circuit designs. These modules undergo strict testing and screening to ensure stable operation in various application environments.

4. Easy to integrate: FTO and FRD modules typically have compact dimensions and standardized interfaces, making them easy to integrate into various power electronic devices.


Application of Fast Turn Off Thyristor/Fast Recovery Diode Module 

1. Power management: In the field of power supply, fast turn off thyristors and fast recovery diodes can directly replace commonly used ordinary diodes, thereby improving the efficiency and stability of power supply. They can quickly control the on/off of current, reduce unnecessary energy loss, and make the power supply more efficient.

(fast turn off thyristors and fast recovery diodes)

2. Motor drive: In the motor drive system, the fast turn off thyristor can achieve fast start stop and precise speed control of the motor due to its fast turn off ability. This is very useful for motor control applications that require high response speed and precision, such as industrial automation, electric vehicles, etc.

(Fast turn off thyristor,fast recovery diode module for electric vehicles)


3. Welding machine: In the welding machine, quickly turning off the thyristor and quickly restoring the diode can quickly respond to changes in welding current, achieving a stable welding process. This can improve welding quality, reduce welding defects, and improve production efficiency.

(Quick turn off thyristor,quick recovery diode module for welding machines)


4. Inverter: In the inverter, the fast recovery diode can quickly process reverse current, ensuring the stability and efficiency of the inverter during the energy conversion process. This is very important for applications that require frequent adjustment of motor speed, such as speed control of equipment such as fans and pumps.


why choose us

Company Profile

PDDN Photoelectron Technology Co., Ltd.( is a high-tech enterprise focusing on the manufacturing, R&D, and sales of power semiconductor devices. Since its establishment, the company has been committed to providing high-quality, high-performance semiconductor products to customers worldwide to meet the needs of the evolving power electronics industry.

It accepts payment via Credit Card, T/T, West Union, and Paypal. PDDN will ship the goods to clients overseas through FedEx and DHL, by sea, or by air. Please inquire if you want a high-quality Fast Turn Off Thyristor/Fast Recovery Diode Module; we will help.


Payment Methods of Fast Turn Off Thyristor/Fast Recovery Diode Module

L/C, T/T, Western Union, Paypal, Credit Card etc.


Shipment of Fast Turn Off Thyristor/Fast Recovery Diode Module

By sea, by air, by express, as customers request.


Storage Conditions for the Fast Turn Off Thyristor/Fast Recovery Diode Module

1. Temperature: The module should be stored moderately warm and dry. Excessive temperature may cause damage to internal components, while low temperature may cause condensation, leading to short circuits or other problems. The recommended storage temperature range is usually -40 ° C to +85 ° C.

2. Humidity: High humidity may cause electronic components inside the module to become damp or corroded. Therefore, the relative humidity of the storage environment should be maintained at a low level, usually recommended at 5% to 95% (without condensation).

3. Cleanliness: Dust, dirt, and other pollutants should be avoided in the storage environment. These pollutants may enter the interior of the module and affect its performance. Therefore, storing the module in a clean and dust-free environment is recommended.

4. Static electricity protection: As these modules are electrostatic sensitive devices, appropriate static electricity protection measures should be taken during storage and handling, such as wearing anti-static wristbands, using anti-static packaging, etc.

5. Mechanical shock and vibration: Excessive mechanical shock and vibration should be avoided on the module, which may cause loose internal connections or damage to components.

6. Packaging and labeling: Modules should be stored appropriately to prevent physical damage. At the same time, it should be ensured that the identification of the modules is clear and complete for easy identification and traceability.




What are the advantages and application scenarios of fast turn-off thyristors compared to traditional thyristors?


Re: The significant advantage of fast turn-off thyristors over traditional thyristors lies in their fast turn-off capability. Traditional thyristors require a longer current decay time when turned off, while fast-turn-off thyristors can quickly switch from the on state to the off state, reducing the phenomenon of current tailing. This fast turn-off characteristic makes turn-off thyristors particularly useful in applications that require fast current switching, such as motor drives, high-frequency power supplies, and inverters. In these applications, quickly turning off thyristors can improve the system's dynamic response speed and control accuracy, enhancing overall performance.



In which power electronic devices do fast recovery diodes play a crucial role?


Re: Fast recovery diodes play a crucial role in various power electronic devices, especially where reverse current needs to be quickly processed. For example, in rectifier circuits, the fast recovery diode can quickly recover from the forward conduction state to the cutoff state, effectively suppressing the generation of reverse current and improving rectification efficiency. In addition, fast recovery diodes also play an important role in inverter power supplies, as they can quickly switch between AC output waveforms, ensuring the stability and efficiency of the power supply.



How do we solve the heat dissipation problem of fast turn-off thyristors and fast recovery diode modules in high-power applications?


Re: In high-power applications, rapid shutdown of thyristors and recovery of diode modules face severe heat dissipation challenges. To solve this problem, the following measures can be taken: first, optimize the heat dissipation design of the module, including increasing the heat dissipation area, improving the structure of the heat dissipation fins, etc., to improve the heat dissipation efficiency. Secondly, choose materials with high thermal conductivity, such as copper or aluminum, as the material for the heat sink to accelerate heat transfer. In addition, auxiliary heat dissipation measures such as cooling fans or liquid cooling systems can further improve the module's heat dissipation capacity. Finally, a reasonable circuit layout can avoid concentrated heat sources and reduce the module's temperature.



How do we balance the relationship between fast response and high efficiency between fast turn-off thyristor and fast recovery diode modules?


Re: The fast shutdown thyristor and recovery diode modules must balance fast response and high efficiency. On the one hand, to achieve fast response, the module needs to have fast switching capability and low delay time, which helps improve the system's dynamic performance and stability. On the other hand, to maintain high efficiency, modules must have low losses and low thermal resistance to reduce energy loss and heat dissipation issues. Therefore, in the design and manufacturing process, it is necessary to comprehensively consider factors such as material selection, circuit design, packaging process, etc., to optimize the module's performance and balance fast response and high efficiency.



How to perform fault detection and maintenance of fast turn off thyristor/fast recovery diode modules to ensure their long-term stable operation?


Re: Regular fault detection and maintenance are required to ensure the long-term stable operation of the fast shutdown thyristor/fast recovery diode module. Firstly, abnormal situations can be detected promptly by monitoring the working status of the module online, such as voltage, current, temperature, and other parameters, as well as performance indicators such as switch speed and recovery time. Secondly, regularly inspect the module's appearance to see any damage, cracks, or deformations and whether the cooling system works properly. If a malfunction or abnormal situation is found, the module should be replaced or repaired on time. In addition, preventive measures can be taken, such as regularly cleaning the surface of the module, maintaining a suitable working environment temperature, etc., to extend the service life and stability of the module. Through comprehensive fault detection and maintenance measures, it is possible to ensure the long-term stable operation of the fast shutdown thyristor/fast recovery diode module.

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