V420LC10PX2855

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Thyristors are semiconductor electronic components that use both a semiconductor and a catalytic base to control current flow. Thyristors are also known as Silicon Controlled Rectifiers (SCRs) or Voltage-regulated Triodes (VTRs). The V420LC10PX2855 is a common type of thyristor used in many applications. This article will discuss the application field and working principle of the V420LC10PX2855.

Application Field

The V420LC10PX2855 is a current-limiting thyristor, and is used in applications requiring surge protection, over-voltage protection, over-current protection, or any combination of these. It is commonly found in circuit breakers, motor drives, power supplies, medical equipment, and industrial process control systems. It can also be used in switching applications, as it is designed to switch quickly, and can turn both AC and DC current.

Working Principle

The V420LC10PX2855 operates using two main elements, a thyristor and a catalytic element. The thyristor is a four-layer semiconductor. It is composed of two p-type layers sandwiching two n-type layers. This construction creates four rectifying junctions, which can be used to control current flow. The catalysis element is composed of an insulated gate that is triggered by an electrically distinctively separate signal. The gate\'s insulation separates the thyristor\'s gate from the gate current and prevents current leakage.

To initiate conduction, the gate is subjected to an external current that is greater than the breakover voltage of the device. This current will flow through both the thyristor and the gate. Once the breakover voltage has been reached, the device should stay in a conducting state, until the anode current is reduced to a point below the off current. The off current is the minimum current required to turn off the thyristor.

Once the gate and anode currents are both low enough, the junction PN resistance of the thyristor will no longer behave as a diode. Instead, it will become insulating, and current will no longer flow through it. At this point, the device is in a non-conduction state, and will remain in this state until the gate current is increased again.

Conclusion

The V420LC10PX2855 is a current-limiting thyristor, and is used in a wide variety of applications for surge protection, over-voltage protection, and over-current protection. It operates using two main elements, a thyristor and a catalytic element. To initiate conduction, the thyristor\'s gate is subjected to a external current that is greater than the breakover voltage of the device. Once the current is low enough, the thyristor will enter a non-conducting state until the gate current is increased again.

The specific data is subject to PDF, and the above content is for reference