ROV07H471K-2

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Varistors, or voltage-dependent resistors (VDRs), are a specialized type of resistor designed to limit the voltage across a circuit by providing a certain amount of resistance under normal conditions, and a larger resistance at higher voltages. The ROV07H471K-2 is a typical varistor component designed to protect against overvoltage conditions, and is widely used in industrial, consumer electronics, and automotive applications.

The ROV07H471K-2 belongs to the family of surface mount technology varistor components, featuring an integrated metal oxide varistor element. It is designed to provide superior ESD performance, fast response time performance, low leakage current, low capacitance, and low operating temperature range. It has a maximum continuous operating voltage of 270V AC and maximum peak surge current of 3750A.

The working principle of the ROV07H471K-2 is based on a simple phenomenon known as the “voltage-variable” resistance. At a given normal operating voltage, the resistance of the device is relatively low. However, when the voltage across the device exceeds a certain “turn-on” threshold (usually ranging from 12V–150V), the resistance quickly increases, providing a protective mechanism against high surge voltages.

One of the main applications of the ROV07H471K-2 is overvoltage protection in consumer electronics. It is designed to protect against transients that could potentially damage sensitive electronic components when paired with a properly designed surge protection circuit. It is also used in automotive applications to protect against high pulse-width modulation (PWM) noise that can occur in high-humidity and high-temperature environments. Additionally, it is used in industrial electronics, such as programmable logic controllers (PLCs), to provide overvoltage protection of sensitive logic circuits.

The ROV07H471K-2 is a versatile, cost-effective, and reliable component for protecting against overvoltage conditions. It offers fast response time performance, low leakage current, low capacitance, and a wide operating temperature range. Its robust design and simple working principle make it an ideal choice for a variety of applications, from consumer electronics to industrial applications.

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