V18ZA3PX2855

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TVS (Transient Voltage Suppressors) devices, such as varistors, MOVs (Metal Oxide Varistors) are a type of surge suppressor designed to limit transient voltages from going over a certain level. The V18ZA3PX2855 is a particular type of TVS device that is used to protect against high voltages and transient voltage spikes. As one of the most popular MOVs, the V18ZA3PX2855 is widely employed in various industries and applications.

Application Fields

The V18ZA3PX2855 is mainly used in computer peripherals, communication equipment, automotive applications and automation. In computer peripherals, the MOV helps defend against surges caused by electrostatic discharge (ESD) and conducts away excessive electrical energy that can damage sensitive components. In the automotive industry, the V18ZA3PX2855 is used to protect critical dc (direct current) components, such as ECUs (electronic control units), sensors, and actuators from transient voltage and current. In telecommunications, the MOV protects communications equipment from lightning strikes and other transient occurrences.

Working Principle

The V18ZA3PX2855 is an MOV with a shield terminal that helps reduce a transient voltage that occurs after a surge. This is achieved by the MOV using a dielectric absorption process, which works by having an insulating material in between two metal plates. When there is a surge, the higher voltage is conducted away while the insulating material blocks the rest of the voltage. This helps limit any excessive electrical energy passed to the components.

During normal operation, the shield terminal will be connected to ground, this controls the MOV’s internal overvoltage limit. How much current is suppressed depends on the applied voltage, the amount of current that needs to be suppressed, and the design of the MOV. The MOV is also able to block any large current from passing through itself and onto the protected components.

Conclusion

The V18ZA3PX2855 is a popular MOV that is used to protect against the risk of transient voltage spikes and high voltages. The device helps to protect various components and electronics, notably computer peripherals, communication equipment, automotive/industrial needs and automation. This is accomplished by the MOV using a dielectric absorption technology, which works by having an insulating material in between two metal plates. When there is a surge, the higher voltage is conducted away while the insulating material blocks the rest of the voltage. Also, the shield terminal connects to ground to control the internal overvoltage limit of the MOV.

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