ERZ-V20D820

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TVS(Transient Voltage Suppression) and Varistors (Voltage Dependent Resistors) are two important devices for protecting electronic components from over voltage or surge voltages. ERZ-V20D 820 is a typical Varistor product; it is widely used in many applications to provide a reliable protective solution from over voltage, EFT, ESD and other surges for electronic components.

The ERZ-V20D 820 is a small, disc-shaped device with a built-in ceramic body and zinc oxide burn mass film, a common voltage-dependent resistor. It not only serves as the main overvoltage protection device, but it also has other significant benefits such as being temperature-stable, high current capacity, low resistance, low parasitic inductance, and a wide operating temperature range. The EZN-V20D 820 has a rated nonlinear voltage coefficient of 10–30V; it limits the current of transient pulses in under 5ns response time.

The ERZ-V20D820 can be used in various applications such as automotive, industrial, medical, communication and consumer applications. For example, it is used in automotive circuits to protect against ESD or EMI, as well as in consumer overvoltage protection and communication Isolation applications. It can also be used in industrial circuits to provide transient voltage surge protection for sensitive circuit components.

The working principle of the ERZ-V20D 820 is based on the phenomenon known as the avalanche effect. When a large voltage pulse passes through the device, the voltage increase causes electrons to become excited and move faster, thus the resistance of the device decreases. Thus, the energy of the voltage pulse is dissipated through the device and is not able to pass through it. This protects sensitive electronic circuitry from voltage spikes which could cause damage or noise interference.

The ERZ-V20D 820 can be used in combination with other components such as fuses, air core inductors and capacitors for a complete overvoltage and surge protection solution. It is also used in isolation and level shifting circuits, to reduce the levels of voltage going to a circuit component to a safe level.

In conclusion, the ERZ-V20D 820 is an excellent choice for a wide range of applications. Its avalanche effect allows it to provide overvoltage or surge protection for many circuits, and its wide operating temperature range makes it highly reliable and suitable for almost any application. With its combination of advantages, the ERZ-V20D 820 is one of the best and most reliable overvoltage and surge protection solutions available.

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