ROV05-330K-S-2

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ROV05-330K-S-2 is a type of TVS - Varistors, MOVs. It is a highly effective transient overvoltage protective component of a high energy low mass, and it is designed for transient overvoltage protection and handling of large power noise and EMI interference.

Application Field

The ROV05-330K-S-2 component has mainly three wide applications – it is mainly used in automotive electronics, LED lighting and power supplies and switching power supplies. It is also integrated with mobile devices, personal electronics, computers and computer peripherals. Automotive electronics makes use of the component for protecting ECU, and conductor line protection of the drive motor in electric vehicles. For LED lighting, the ROV05-330K-S-2 component is used for protection of power lines and LED driver ICs, and electromagnetic interference protection of driver ICs. In power supplies, it is used for protection of output circuits and protective devices from overvoltage and surge current, and these protections occur in both ac-dc and dc-dc power supplies. Finally, it is also used in computers and computer peripherals for overvoltage protection and interference protection.

Working Principle

Basically, ROV05-330K-S-2 component works as a voltage dependent resistor. It comprises a zinc oxide element along the surface of the semiconductor material. As soon as the voltage across the device exceeds a certain limit, the device conducts current. The current passes through the zinc oxide element and hence produces localized heat. On thermal breakdown, the current reduces automatically and the element returns to its high impedance state. This voltage dependent resistance is thus is commonly termed as a varistor.

The ROV05-330K-S-2 components are based on varistor material which is made with grains of different sizes. These grains are distributed across the entire semiconductor element. This ensures that when the voltage amount increases, the grains tend to break down. The breakdown voltage of the component depends on the grain size and the shape of the zinc oxide material.

The device operates in an avalanche mode of operation. In this mode, the device begins to non-linearly conduct current immediately when the applied voltage across the terminals of the device exceeds the reverse breakdown voltage. This current flow continues until the voltage drops below the breakdown voltage. Due to this, the device does not allow any surge to cause damage to electronic circuits and hence it is named as the surge protection device. It also helps in the protection of power rectification circuits from these sudden voltage spikes.

Advantages

The main advantages of ROV05-330K-S-2 are that it provides efficient and reliable overvoltage protection and reduces the probability of electronic failures. Moreover, the component is integrated with low capacitance and so provides perfect circuitry for low capacitance. It is also compatible with circuit topologies having low impedances. ROV05-330K-S-2 also requires minimal board space and supports wide voltage ranges.

Conclusion

ROV05-330K-S-2 component is an important part of the transient overvoltage protection devices and is widely used in automotive electronics, LED lighting, power supplies, computers and computer peripherals. It is one of the best solutions to protect fragile and sensitive electronic systems from transient overvoltage or from power noise. It provides efficient protection and helps in reducing electronic failures.

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