VA2220K122R014

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TVS - Varistors, MOVs are passive components designed to protect sensitive electronic circuitry against transient voltage events, normally resulted from lightning or electrostatic discharge (ESD). In this article, we will examine the application field and working principle of VA2220K122R014.

Definition of VA2220K122R014

VA2220K122R014 is a varistor developed by VACUTEK, a leading supplier in the TVS - Varistors, MOVs market. This varistor has dimensions of 22mm x 20mm, features 40A peak current capability, Clamping Voltage of 14V, and Surge rating of 21 joules. These specific values provide greater flexibility and optimized design and protection.

Application Field & Working Principle

VA2220K122R014 is designed to be used in a broad range of electrical and electronic circuits, with its power and current range from automotive to AC/DC power converters and power supplies. Additionally, additional choices in packaging and insulation options extend its application range to medical and appliance markets.

The working principle of VA2220K122R014 is based on the non-linear resistive behavior of the varistor. When a voltage is applied, a certain current flows through the element, but the current does not vary linearly with the applied voltage. When the applied voltage exceeds the varistor’s break down voltage, the current rate begins to increase at an exponential rate. This effect is known as varistor clamping or voltage clamping.

In contrast to fuses and circuit breakers, which have a one-time function to cut the circuit off, VA2220K122R014 is capable of withstanding multiple voltage events. This function is due to the rapidly increasing resistive nature of the varistor that temporarily increases the effective resistance of the varistor to limit the amount of current flow through it.

VA2220K122R014 is built to handle overvoltage for a broad variety of applications. An example application is in surge protectors used on communication lines, where VA2220K122R014 will act as a voltage limiter by decreasing the peak voltage while allowing the rest of the waveform to pass through to the device being protected. VA2220K122R014 can also be used to protect sensitive equipment in industrial applications where industrial automation equipment, electrical instrumentation and other equipment may experience frequent voltage peaks.

Conclusion

In conclusion, VA2220K122R014 is a varistor that can be used in a wide range of electrical and electronic applications. It features a 40A peak current capability, a Clamping Voltage of 14V, and a Surge rating of 21 joules. The working principle of VA2220K122R014 is based on the non-linear resistive behavior of the varistor, where it is capable of withstanding multiple voltage events. Thus, VA2220K122R014 is a great choice for protecting sensitive equipment in industrial applications.

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