ROV20-391K-2

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TVS (Transient Voltage Suppression) diodes, Varistors, and MOVs (Metal Oxide Varistor), are all devices that are used to protect sensitive electronic components from dangerous overvoltages and overcurrents. The ROV20-391K-2 Varistor series from WGE Passive Components is a high-performance, cost-effective device that provides short-term protection against overvoltages, and surge currents. In this article, we will discuss the application field and working principle of the ROV20-391K-2.

Application Field

The ROV20-391K-2 Varistor series is primarily used for the protection of sensitive components from overvoltage and overcurrent surges. The application fields for this device include, but are not limited to, consumer electronics, automotive electronics, communication systems, and home appliances. The device also finds use in medical systems, control systems, industrial instrumentation, security systems, lighting systems, and computer systems.

Working Principle

The ROV20-391K-2 Varistor series utilizes a metal oxide varistor (MOV) to provide short-term protection from overvoltages and overcurrent. When connected across a DC voltage, the varistor behaves like a capacitor with a variable capacitance. When connected across an AC voltage, it behaves like a voltage-dependent resistor with a very high impedance at low voltages, and a very low impedance at high voltages.

When an increased voltage or current is applied to the device, the capacitance of the varistor increases, resulting in a reduction of the device impedance. This reduction in impedance allows the current to pass through the device, allowing it to divert the energy away from the protected components. Once the excessive current has been diverted, the device returns to its normal state.

The ROV20-391K-2 Varistor series provides superior performance in overvoltage protection applications. It is also designed to provide protection to a variety of components, such as power supplies, switches, motors, relays, connectors, and other sensitive electronic components.

Conclusion

The ROV20-391K-2 Varistor series is a robust, cost-effective device that provides effective protection from overvoltage and overcurrent surges. As an MOV, it utilizes a variable capacitance to provide short-term protection against excessive current. The device is suitable for use in a variety of applications, including consumer electronics, automotive electronics, communication systems, home appliances, medical systems, control systems, and more.

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