ROV10-471K

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Introduction to ROV10-471K
The ROV10-471K is a fixed and movable two-stage varistor developed by COSMA. It is a combination of a nonlinear metal-oxide resistor and a metal layer, which provides an avalanche voltage divider that can reduce the risk of overload and maintain the safety of various electronic components. The ROV10-471K is a versatile component of TVS-Varistors, MOVs, which has a wide range of applications. This article will discuss its application field and working principle.

Application field of ROV10-471K
ROV10-471K TVS-Varistors, MOVs is widely utilised in many applications, including power supply, instrumentation, communication, automotive applications, etc. In power supply application, the ROV10-471K is used as an overvoltage protection device in various power supply systems. It can effectively reduce the possibility of system malfunctions, and protect the components from damaging surges of voltage.In instrumentation and communication devices, the ROV10-471K can prevent and reduce interfering noises and ensure the data stability. Moreover, the ROV10-471K can be used in automotive applications such as EVs. The application of ROV10-471K can improve the safety of EV charging by protecting the system from overvoltage or undervoltage. Apart from these, the ROV10-471K also has other industrial applications.

Working Principle of ROV10-471K
ROV10-471K is composed of a nonlinear metal-oxide resistor and a metal layer. The nonlinear metal-oxide resistor is composed of tantalum nitride (TaN) and alumina (Al₂O₃) material, which is very efficient in handling large surges of current. The metal layer helps reduce the internal inductance of the ROV10-471K, facilitating the rapid response of the component. When an overload enters the system, the voltage on the two metal-oxide layers of the ROV10-471K will increase, and the metal layer will be triggered to conduct. The conduction of the metal layer will reduce the voltage across the two metal-oxide layers, thus preventing the system from being damaged by the overload. The ROV10-471K will then automatically reset after the discharge of voltage. The ROV10-471K also has many advantages such as a wide operating temperature range, low leakage current, low clamping voltage, and fast response time. The device has a breakdown voltage ranging from 6V to 1800V, a capacitance up to 95pF, and can handle current up to 20A.

Conclusion
The ROV10-471K is an efficient TVS-Varistors, MOVs component with wide applications. It can protect systems from overvoltage, undervoltage, and interference noise. The combination of nonlinear metal-oxide resistor and metal layer provides an avalanche voltage divider that can reduce the risk of overloads. The ROV10-471K has many advantages such as a wide operating temperature range, low leakage current, and low clamping voltage.

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