ROV14H911K-2

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TVS - Varistors, MOVs are widely used in electric devices. The ROV14H911K-2 is a popular Varistor produced by Raychem RPG. This article will introduce the application field and working principle of this Varistor.

Application Field

ROV14H911K-2 Varistors are suitable for protecting against high-voltage, high-current transient caused by electrical surges, electrostatic discharge(ESD), soft question and inductive overload. They are widely applied in areas such as industrial equipments, communications equipments, automotive equipment, electric tools, medical equipment, consumer electronics, etc. As an unidirectional device, ROV14H911K-2 varistors are designed to prevent overvoltage flows from one terminal to the other.

The ROV14H911K-2 varistor exhibits excellent Surge current rating, 1500A at 8/20µs, withstanding voltage 1550VAC and voltage standing wave ratio of <1.5. It provides you with both low-current and high-current protection, as well as ESD and soft question protection.

Working Principle

Varistors operate on a voltage dependent principle. Under normal conditions, when the voltage reaches a certain level, the Varistor will start to conduct the current. This is known as the "break-over voltage". The “break-over” voltage indicates that a Varistor has entered a conductive state and will reduce the voltage to a safe level. It will remain in this state until the voltage is lowered below the “break-over” voltage and will then switch back to its non-conductive state.

The primary purpose of the ROV14H911K-2 Varistor is to provide effective protection against electrical surges and reduce the amount of damage caused by these surges. The Varistor operates on a diode structure which allows it to quickly detect when the current flow is in one direction. When the voltage reaches the “break-over” voltage level, the Varistor will quickly reduce the voltage to a safe level and ensure the safety of the electrical system.

ROV14H911K-2 Varistors are constructed from a composite material composed of zinc oxide particles and ceramic binders. This composite material can be tailored to control the “break-over” voltage and provide different levels of protection for various voltage levels. In addition, the composite material absorbs the energy from the voltage spikes so that they do not cause damage to the electrical system.

The ROV14H911K-2 varistor is a reliable and dependable device that is suitable for a variety of applications. It provides a superior level of protection against electrical surges and ESD events while reducing the risk of damage to electrical systems and components. It is important to choose the right Varistor for the application as the wrong choice could have serious consequences.

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