VA200060K121DL Circuit Protection

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A Varistor (also known as a voltage dependent resistor or VDR) is a highly specialized form of resistor which provides protection from overvoltage transients in electronic circuits. The VA200060K121DL is a ceramic disc type varistor used to protect devices from voltage surges caused by lightning, switching transients, and electrostatic discharge. It is available in a wide range of capacitance values, making it suitable for a variety of applications.

Before discussing the uses of the VA200060K121DL, it is important to understand its working principle. A varistor is a type of resistor that has a non-linear voltage-current characteristic. The ability of a varistor to change its behavior at different voltage levels makes it an ideal choice for overvoltage protection. As the applied voltage increases, the resistance of the varistor changes drastically. This phenomenon is referred to as the “memory effect”. When the applied voltage is within a certain range, the varistor offers high resistance. However, when the voltage level exceeds this range, the resistance of the varistor drastically decreases. This enables the varistor to clamp the applied voltage level within the “normal” range.

The VA200060K121DL is suitable for a wide range of protection applications, especially in areas that are exposed to high transient stresses, such as telecommunications, power supplies, lightning protection, and automotive applications. The device is offered in capacitance values ranging from 100nF to 15nF. This enables the user to find the exact capacitance value that is suitable for the application.

The VA200060K121DL can also be used for other applications, such as grounding, line filters, surge limiters, and more. The device has a high surge capability, making it suitable for applications such as motor control spikes. In addition, the device is self-healing, meaning it can repair itself in the event of a transient. The self-healing property is enabled by the non-linear current-voltage characteristics of the varistor, which allows it to dissipate the energy of the transient.

The VA200060K121DL is a highly versatile device that offers superior protection for a variety of applications. The device is available in a wide range of capacitance values, allowing it to be used in a variety of protection applications. In addition, the device is self-healing, making it suitable for applications that are exposed to high transient stresses. Finally, the device has a high surge capability, making it suitable for applications such as motor control spikes.

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