ROV07H330K-2

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TVS – Varistors, MOVs are components that protect electronic devices from power surges, ESD, lightning strike and other disturbances. ROV07H330K-2 is a type of varistors that is used to maintain safety and meet the current system requirements of electronic equipment.
ROV07H330K-2 application fields are mainly divided into four:

Automotive

ROV07H330K-2 is mainly used to provide a wide range of protection in the automotive field such as lightning strike or power surge protection, short circuit current, EMC interference, etc. In the automotive field, the varistor has an important role in protecting the electrical safety of the car. At the same time, its ability to absorb electromagnetic radiation and suppress electrical noise also brings great convenience to the car\'s motor.

Industrial

ROV07H330K-2 is also widely used in industrial equipment protection. It is suitable for various filter systems and communication electronic systems, and can provide excellent power supply quality and reliability. In addition, it can also provide a protective shield against electric shock, fire and vibration protection.

Communication

ROV07H330K-2 is also used in communication fields. It helps maintain a clean power environment, eliminates unnecessary interference noise, protects against overvoltage, and maintains system stability. With its wide operating frequency range, it also provides the ability to flexibly adjust the parameters of different circuits.

Medical

With its low leakage current, ROV07H330K-2 is widely used in medical electronic protection. It ensures the stability of medical electronic equipment while providing low-power interference protection and over-current protection. reducing noise, protecting patient safety and improving the reliability of medical equipment.

Working Principle

The ROV07H330K-2 is a varistor made of zinc oxide and is a multilayer ceramic chip with an internal crack. Its internal structure is composed of many thin layers of electrical conductors that are isolated from each other. When the varistor does not conduct, the voltage across the measuring point is constant, and the current is zero. When the applied voltage exceeds the clamping voltage, the varistor enters the closed region. This is because the crack inside the varistor becomes a closed conductor.

At this time, the resistance of the varistor decreases suddenly, and the large current is applied to the protection circuit, and the overvoltage is absorbed and dissipated. When the external electric field is weakened, the varistor will return to the original state, and when the voltage is lower than the clamping voltage, the varistor will return to a high-resistance or open state.

In this way, ROV07H330K-2 can pass the small signal but absorb the large current, protect the superior circuit and provide an effective protection for various kinds of electrical equipment.

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