F1857DH1200 Discrete Semiconductor Products

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The F1857DH1200 is a thyristor module with a unique set of properties that makes it an ideal choice for a wide variety of applications. It is a three-terminal device that acts as a semiconductor switch and is used in power control and rectification applications.

Description

The F1857DH1200 module is a symmetrical, three-phase thyristor module that can be used for both full-wave and half-wave rectification for AC current or DC current control purposes. It is designed to be used in high-voltage and high-current applications and is one of the most reliable modules on the market.

The F1857DH1200 is an 800-ampere three-phase thyristor module with a built-in snubber circuit and over-temperature protection (OTP) circuit. It also has an integrated over-voltage suppression (OVS) circuit that prevents overvoltage shocks and current surges. It has an integrated static reactor, which helps reduce EMI noise, and a short-circuit protection (SCP) circuit that helps protect the thyristor module from short circuit damage.

Advantages

The most notable advantage of the F1857DH1200 is its impressive current carrying capability. It has an 800-ampere continuous current rating and can handle up to 1200-ampere peak current. This makes it a great choice for applications that require high current, such as uninterruptible power supplies and arc furnaces.

Another advantage of the F1857DH1200 is its low leakage current. This means that it won’t consume power when it is not being used, making it an energy-efficient choice. It also has a excellent temperature coefficient that ensures that it won’t become unstable over time. It also has built-in EMI noise suppression, making it ideal for use in electric motor control applications.

Application Fields

The F1857DH1200 is a popular choice for a variety of power control and rectification applications. It can be used for a range of high-current applications, from uninterruptible power supply systems and automatic transfer switches to arc furnaces, DC drives, and industrial motors. Additionally, it is suitable for photovoltaic and solar inverter applications and for static power factor compensation in power systems.

Working Principle

The F1857DH1200 thyristor module is composed of three thyristor subunits connected in series. The thyristors work in a “quadrant-specific” mode where they turn on and off one after another. This allows precise control over the current and voltage. The module can detect the presence of an AC current and is capable of turning it on and off at precise intervals, which helps reduce the amount of energy it consumes.

When a positive current is detected, the thyristor switches on the positive side and starts to conduct the current. The current then flows through the thyristor and is regulated by the OVS circuit. When the current is at its maximum, the thyristor is turned off and the current stops. The process then repeats as needed, making the module highly efficient at controlling the flow of current.

Conclusion

The F1857DH1200 is a thyristor module that can be used in a wide range of applications. It has an impressive 800-ampere current rating and is built with integrated EMI noise suppression and over-temperature protection. Its low leakage current makes it an energy-efficient choice and its integrated static reactor helps ensure reliable operation. It is capable of precise control over current and voltage, making it ideal for power control and rectification applications.

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