ERZ-V20R221

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TVS - Varistors, MOVs is a generic name for the product family, which can be used in applications such as power supply rail protection, line-to-ground protection and etc. ERZ-V20R221 is one of these products and widely used in these applications.

The ERZ-V20R221 is a metal oxide varistor (MOV) from Samsung Electro-Mechanics. It is a two-terminal device with high surge current ratings and is most suitable for line-to-ground protection applications. It is a popular component in equipment such as PCs, servers, power supplies, and control centers, and is also widely used in consumer and industrial applications.

The ERZ-V20R221 varistor is a voltage-dependent resistor characterized by nonlinear resistance characteristics, which allow it to be used as a surge protector. The resistance of the device varies with the applied voltage, and the typical peak current rating at a given voltage is typically much higher than the peak current rating of a linear resistor.

The typical peak current handling capability of the ERZ-V20R221 varistor is 5400A, with a maximum transient voltage stand-off of 2200V. With a small package size and low power consumption, it is suitable for high reliability line-to-ground protection applications, such as protection against spike voltages generated by lightning or other transients from the power line.

The working principle of the ERZ-V20R221 varistor is quite simple. It utilizes the metal-oxide semiconductor device in order to provide a low resistance path for transient voltage surges. When a transient voltage surge passes through the device, the resistance of the MOV device is reduced, thus limiting the peak voltage at the protected device. The MOV device has an adjustable threshold voltage, so the varistor will activate and limit the peak voltage when the surge voltage exceeds the preset level.

The ERZ-V20R221 is a versatile device and can be used in a variety of applications, such as power supply rail protection, signal line protection and line-to-ground protection. It can also be used to protect sensitive devices, such as computers, servers and other electronic equipment, from damage due to transient events.

In conclusion, the ERZ-V20R221 is a valuable component in applications involving transient voltage surges. It is a robust device capable of withstanding large surge voltages and current spikes without damaging the protected device. Its small size, low power consumption, and high surge current ratings make it a popular choice for protecting electronic equipment from transient events.

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