ROV14-221K

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TVS - Varistors, MOVs for surge protection have become an increasingly important part of modern electric circuits which are exposed to high surge voltages and transients. ROV14-221K is a widely used surge protective device (SPD) in the TVS - Varistors, MOV series. It is an optimum solution to protect electronics from transients and surge voltages. This paper will discuss the application field and working principle of ROV14-221K.

ROV14-221K provides over-voltage protection for electronic equipment, such as communication, medical, industrial and home theater systems. It has excellent transient voltage protection characteristics, high current carrying capability and good surge-handling capability. ROV14-221K can effectively clamp surge voltages as high as 400V with low Clamping Voltage (VC). In addition, it has low peak pulse current, low leakage current, low temperature rise and low operating temperature. All of these factors make ROV14-221K an ideal choice for surge protection of sensitive electronic equipment.

ROV14-221K has a simple and efficient working principle. It consists of a non-linear metal oxide varistor body and two surge absorber electrodes, as shown in the figure. When a surge voltage is applied, the varistor body will be exposed to a large electric field. This electric field will cause a current to flow through the varistor material, resulting in a decrease in the voltage across it. The decrease in the voltage across the varistor body causes a reduction in the voltage across its terminals. This is called the "clamping voltage" and is the primary function of the varistor.

The surge current flows from the electrode to the varistor body and then to the other electrode. As the surge current flows through the electrodes, it creates a heating effect which dissipates the energy of the surge. This dissipated energy is then absorbed by the varistor body and dissipated as heat. This process happens very fast and ensures that the surge voltage is clamped to a safe level before it has a chance to damage the connected equipment.

The ROV14-221K also has a number of other features which make it an ideal choice for surge protection. It has a fast response time, has low residual voltage, and requires no external device for operation. In addition, it is RoHS compliant and dust-resistant, making it suitable for use in harsh environments. As a result, ROV14-221K is widely used in a variety of applications, such as medical equipment, communication systems, industrial machinery, and home theater systems.

In conclusion, ROV14-221K is a reliable SPD in the TVS - Varistors, MOV series. It provides excellent over-voltage protection for electrical equipment, is RoHS compliant, and features fast response time. Furthermore, it has low residual voltage, low temperature rise, and low operating temperature. All of these benefits make it an ideal solution for surge protection of sensitive electronic equipment.

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