ROV10-471K-S-2

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TVS (Transient Voltage Suppressors) are reliable components designed to protect electronic circuits from damaging transient voltages, commonly known as voltage spikes. Varistors, also known as Metal Oxide Varistors (MOVs), are often used as part of this protection. The ROV10-471K-S-2 is a varistor from Littelfuse that offers effective protection in the 1000 volt range. This application note will take a look at the application field of the ROV10-471K-S-2 and its working principle.

Application Field

The ROV10-471K-S-2 is a varistor designed for the protection of electrical and electronic circuitry against transient overvoltage. It is commonly used in a wide range of applications, from industrial equipment and home appliances to military and aerospace use. Its ability to absorb and dissipate high transient voltages makes it an ideal choice for applications where high isolation voltage is required. The device can be used in both AC and DC applications since it can easily be adapted to different operating conditions by means of an external resistor.

The ROV10-471K-S-2 is designed to provide overvoltage protection for sensitive electronics from 0.5 joule to 1 joule of energy with 7mm disk size, very small for its class. It has unbeatable high surge absorption capability, making it ideal for applications that require expensive components to be protected from damaging transient voltages. A wide operating temperature range of -40°C to +85°C and a maximum working voltage of 1000 volts make the ROV10-471K-S-2 an ideal choice for many applications.

Working Principle

The working principle of the ROV10-471K-S-2 is based on the property of Metal Oxide Varistors, or MOVs, which are commonly used as part of overvoltage protection for sensitive circuits. MOVs are designed to protect against overvoltage and high voltage spikes by “clamping” the transient voltage to a safe level, thereby preventing any damage.

When an overvoltage surge appears, the MOV reacts to dissipate the energy instead of allowing it to damage the protected equipment. This helps to maintain the circuit’s stability and operation. MOVs can absorb both AC and DC voltages and can be designed to work with lower leakage current. This is especially important in the case of sensitive electronic circuits, since the lower the leakage current, the more isolated the circuit will be.

The robust design of the ROV10-471K-S-2 makes it ideal for harsh environments and ensures a long product life. The device is also designed to have low power consumption, reducing overall system costs.

Conclusion

The ROV10-471K-S-2 is a Metal Oxide Varistor designed to absorb and dissipate high frequency transient overvoltage. It is the perfect choice for industrial, automotive, military and aerospace applications when improved surge absorption and protection from voltage spikes is needed. This device offers high isolation voltage and incomparable surge absorption capabilities, while still being economical and space-saving. The maximum working voltage of 1000 volts makes it well-suited for a range of applications, and when combined with its robust design and long-term operational reliability, it stands out as one of the best solutions for overvoltage protection on the market.

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