ROV10H221K-2

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TVS - Varistors, MOVs are protective components that are placed in electrical circuits to protect them from transient voltage conditions. ROV10H221K-2 is a two-terminal axial-leaded, non-polarized Varistor/MOV that provides excellent protection against electrical transients and surges and is especially designed to provide electrical protection in low frequency applications.

Application

The ROV10H221K-2 is mostly used in combination with other protective devices, such as a reverse-biased zener diode or a clamping device, for circuit protection from transient voltage surges. Some of the key applications that the ROV10H221K-2 is used for are:

• Telecommunications systems
• Consumer electronics
• Hard disk drive protection
• Avionics
• Basestations

The varistor/MOV is also used in more critical applications, such as automotive and space applications, for protection against multiple transient voltage levels. In these applications, the ROV10H221K-2 is used both as a stand-alone component and in combination with other protective components.

Working Principle

The varistor/MOV is made up of two electrodes, an anode and a cathode, and a ceramic body made from zinc oxide material. The zinc oxide material acts as the nonlinear element in the circuit and is responsible for providing the high current limited clamping voltage. The ROV10H221K-2 is designed to withstand a maximum sustained applied voltage of 400V and a surge withstand capability of 1kV.

The ROV10H221K-2 works by shifting the applied voltage towards the positive or negative pole of the circuit accordingly, thus introducing a clamping voltage relatively close to the applied voltage. This action of the ROV10H221K-2 limits the voltage surges and ensures that the underlying circuitry is safe from any damage.

Because the varistor/MOV is designed to have a wide temperature range, it is an ideal choice for applications that require a wide temperature operating range. The varistor/MOV is also capable of withstanding a wide variety of current and voltage levels, making it suitable for a variety of different applications.

Conclusion

The ROV10H221K-2 Varistor/MOV is a highly reliable protective component that is used in a wide variety of applications. Its wide temperature range and surge withstand capabilities make it a very effective and reliable protective component for protecting electronic circuits from transient voltage conditions.

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