V27ZU2P

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A varistor is one of the most important components in the circle of TVSs (Transient Voltage Suppressors). This article will focus on the V27ZU2P varistor, which is a very common type of varistor in the market. We will explain its application field, the working principle, and other related information.

Introduction

A varistor, also known as a voltage-dependent resistor (VDR), is a type of semiconductor device that exhibits a non-linear electrical characteristic, which appears as a nonlinear resistance when exposed to a varying voltage. These devices are used to protect against voltage spikes, or “transients”, over a predetermined range of operating voltages. By inserting a varistor into a circuit, voltage transients are quickly dissipated within the varistor, and the voltage seen by the device being protected is significantly reduced.

Among different types of varistors, the V27ZU2P varistor stands out for its unique properties. The main reason for this is its application field. It is used for the protection of equipment exposed to high power transients. It is also a very common choice of varistor in many electronic devices.

Application Field

The V27ZU2P is mainly used in the protection of communication equipment and computers from power abnormalities (overvoltage, voltage surge, etc.). It is also suitable for different types of electronic consumer products, such as televisions, refrigerators, washing machines, printers, fax machines, etc. It is particularly suitable for environments with harsh electrical environments, such as industrial sites. It can also be used in auto parts and other applications.

The V27ZU2P varistor is also a great choice for lighting equipment, due to its high current limiting capabilities. It is also well suited for applications that need to survive a variety of static or transient over-voltage conditions (such as defibrillators and power converters).

Working Principle

The V27ZU2P varistor works on the principle of a non-linear semiconductor with a voltage dependent resistance (VDR). When the voltage across the varistor is below the “breakdown voltage”, the varistor behaves like a normal resistor with relatively low resistance. When the voltage across the varistor is above the breakdown voltage, the varistor’s resistance increases exponentially, which helps to protect against current surges. The varistor also has a relatively low self-capacitance, which helps reduce EMI (electromagnetic interference).

The overall functionality of the device is to provide protection against any transient over-voltage conditions that might be found in a circuit. When an over-voltage condition is encountered, the varistor’s resistance will increase exponentially, which helps protect any vulnerable elements in the circuit. This increased resistance also helps dissipate the excess energy from electrical transients.

Conclusion

The V27ZU2P varistor is a versatile and dependable device that is used in a wide variety of applications. It has a very wide operating temperature range, making it suitable for harsh industrial environments. Its nonlinear characteristics make it perfect for protecting delicate electronic equipment against power irregularities, as well as providing infrastructure protection from voltage transients. Its low self-capacitance also helps reduce EMI. It is a great choice for any application.

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