V20H30P

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The varistor (VDR) is a device that can limit excessive voltage, reduce overvoltage, limit transient overvoltage or clamp surge voltage, and protect important components from damage. V20H30P is a metal oxide varistor (MOV) developed by DFRobot, which is mainly used to reduce overvoltage caused by transient voltage. It is widely used in outdoor electronic equipment or sensitive control circuit of high voltage system. It also acts as a protection element for high and low voltage overvoltage, low and high voltage lightning protection, and line transients caused by switching.

The V20H30P is a metal oxide varistor (MOV) with a rated voltage of 20V, a clamping voltage of 30V and a maximum overload voltage of 32V. It is a surface mount device (SMD) with excellent electrical characteristics. It has low leakage current, high capacitance and low impedance at frequencies from DC to over 1 MHz. It also has a lower peak surge voltage and a very fast response time, making it an ideal protection element.

Working principle：When AC or transient voltage higher than 20V is applied, the V20H30P varistor will conduct as soon as the voltage reaches the breakdown level. At that moment, it turns on and allows the current to pass in the opposite direction to protect connected electrical components from damage due to overvoltage. It also reduces the rise time of the voltage and shortens the impulse response time. When the voltage returns to normal, the varistor turns off and stops current conduction. This helps to protect the downstream components from damage due to an equipment failure.

V20H30P varistors are widely used in electronic equipment and switching power supplies, especially in outdoor wireless networks, communication networks, and electronic control systems, as well as in lightning counters and thermistors. Besides, it can be used as the main protection element in the power distribution system to protect the system from lightning and transient surge, and reduce overvoltage and transients.

In addition, the use of V20H30P varistors as protection elements can extend the life of electronic equipment. The metal oxide varistors can provide a wide protection range, and protect the equipment from excessive voltage, transients and various types of overvoltages that may occur in the power supply system. It also helps maintain the stability of the system in such a way that it prevents accumulated damage to the electronic components.

V20H30P varistors not only provide excellent surge protection performance, but also enhance the reliability of the system. They are very cost effective and can be used in a variety of applications. With its high quality and performance, they are easy to install and require low maintenance, making them an ideal protection solution for industrial and commercial applications.

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