ERZ-V14D220

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TVS (Transient Voltage Suppressors) devices have long been used in a wide variety of applications to protect sensitive electronics from transient voltage surges. Varistors, also known as MOVs (Metal Oxide Varistors), are one type of TVS device that are commonly used in modern electronics. This article will focus on the application field and working principle of the ERZ-V14D220 Varistor.

Applications

The ERZ-V14D220 Varistor is designed to protect sensitive electronic circuits from electrical transients such as lightning and power line surges. It has a unique ability to absorb large amounts of energy in a short period of time, making it ideal for applications that involve high power or voltage spikes. The ERZ-V14D220 is particularly useful in the automotive, telecom, and industrial sectors, as it can provide reliable protection for critical components even in harsh environments.

Working Principle

The ERZ-V14D220 Varistor is a nonlinear, two-terminal Voltage Dependent Resistor (VDR) that is constructed with zinc oxide pellets and metal electrodes. When an AC or DC voltage is applied across its terminals, the Varistor becomes conductive, allowing current to flow. As the voltage increases, the Varistor’s resistance decreases. When the voltage reaches a certain level, the Varistor starts to act like a short circuit, preventing excessive current from flowing to the protected device.

The ERZ-V14D220 is designed to act as a “crowbar” device, meaning that it trips when the voltage reaches a certain level. This allows it to limit the peak voltage that reaches the protected circuit to a safe level. Furthermore, the ERZ-V14D220 is highly reliable, with a low-failure rate even after repeated exposures to high-energy transients.

Conclusion

The ERZ-V14D220 Varistor is an effective, reliable device for protection against transient voltage surges. Its low-failure rate and high-energy absorption make it ideal for automotive, telecom, and industrial applications. Furthermore, it is able to act like a "crowbar" device, providing reliable protection against dangerous voltage spikes.

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