ROV10H271K-2

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Varistors, also referred to as voltage-dependent resistors (VDRs), are a type of semiconductor that is used for over-voltage protection in circuits. The ROV10H271K-2 is a varistor product from Littelfuse, and it is used for over-voltage, over-current, and ESD (electrostatic discharge) protection. The device is designed to protect circuits from transient over-voltage and transient current conditions. This article explores the application field and working principle of the ROV10H271K-2.

Application Field

The ROV10H271K-2 is ideal for a wide range of high-voltage applications, including consumer electronics, industrial equipment, automotive systems, and power supplies. It is designed to provide robust surge protection for high-voltage AC and DC components. This device can protect against transient over-voltages as high as 610V and transient currents up to 15A. It can be used for both over-voltage and over-current protection. Additionally, the device can provide electrostatic discharge protection by limiting voltage transients and current on sensitive electronics or components.

Working Principle

The ROV10H271K-2 is a metal-oxide semiconductor (MOS) that functions as a voltage-dependent resistor. MOS varistors are designed to be non-linear devices that exhibit a negative temperature coefficient of resistance. This means that as the temperature increases, the resistance decreases. A MOS varistor also exhibits a positive voltage coefficient of resistance. This means that as the voltage increases, the resistance increases. In the case of the ROV10H271K-2, this means that the device can “sense” the over-voltage or over-current condition and act as a resistor to limit the voltage or current. When the transient voltage or current is limited, the circuit is then protected from any damage.

Conclusion

The ROV10H271K-2 is a Varistor from Littelfuse designed for transient over-voltage and over-current protection. It is designed to provide robust surge protection for high-voltage AC and DC components, as well as provide electrostatic discharge protection. The device is ideal for a wide range of high-voltage applications, including consumer electronics, industrial equipment, automotive systems, and power supplies. The device functions as a voltage-dependent resistor, and exhibits both a negative temperature coefficient of resistance and a positive voltage coefficient of resistance. This means that the device can “sense” over-voltage and over-current conditions and act as a resistor to limit the voltage or current, thus protecting the circuit from damage.

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