VS-VSKV250-12PBF Discrete Semiconductor Products

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Thyristors - SCRs - Modules

Thyristors, SCRs and modules have a range of applications in the power electronics industry. They are widely used in motor control applications and to control the flow of current in circuits. They are also used in switched-mode power supplies, DC-AC inverters, AC choppers and DC choppers. In this article, we will discuss the VS-VSKV250-12PBF application field and its working principle.

VS-VSKV250-12PBF Application Field

The VS-VSKV250-12PBF is a voltage-sensitive thyristor module from Vishay Semiconductors. It is a 3-phase module with 1,200 volts of peak blocking voltage. The operating temperature range of this module is -40°C to 125°C. This module has three gate terminals that are used to trigger the firing of the thyristors. It also includes a voltage divider network and a thermal overload protection circuit. This module can be used in a variety of applications including motor control, AC or DC choppers or commutated inverters, AC or DC line voltage monitors, phase angle control and voltage balance in 3-phase power supplies.

Working Principle of the VS-VSKV250-12PBF

The VS-VSKV250-12PBF is a bidirectional thyristor module. A thyristor is a solid-state device that consists of four layers – an anode, a cathode, and two junctions called gates. When the voltage across an anode and cathode is greater than a certain threshold, the gates in the thyristor become forward-biased, allowing a low current to flow through the device. This low current triggers the thyristor and it turns on, allowing a large current to flow across the device.

The operation of the VS-VSKV250-12PBF is similar to that of a thyristor. When the voltage across the anode and the cathode of the module exceeds the breakover voltage, the gates become forward-biased and the thyristor turns on, allowing a large current to flow across the device. The module also includes a voltage divider network, which is used to reduce the peak blocking voltage from 1,200 volts to a safe level that can be handled by the module. The thermal overload protection circuit is used to protect the module from overheating and is connected to a thermistor, which senses the temperature of the module.

Conclusion

The VS-VSKV250-12PBF is a voltage sensitive thyristor module from Vishay Semiconductors. It is a 3-phase module with 1,200 volts of peak blocking voltage and can be used in a variety of applications. It operates on a similar principle to that of a thyristor, wherein when the voltage across the anode and the cathode exceeds the breakover voltage, the gates become forward-biased and the thyristor turns on. The module also includes a voltage divider network and a thermal overload protection circuit for safety.

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