ERZ-V14D820 Circuit Protection

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TVS, Varistors and MOVs (Metal Oxide Varistors) are a type of semiconductor device which has multiple resistance ratings and is used for a variety of voltage protection applications. The ERZ-V14D820 is a varistor which has a very low-impedance, making it ideal for high-current applications. It has a small and compact design, yet it offers high performance. The device is also very robust, making it capable of handling extreme temperatures and high vibration environments.

So what is the ERZ-V14D820 application field and working principle? The ERZ-V14D820 is a voltage-controlled varistor which is used for protecting switch-mode power supplies, and other circuits from over-voltage transients. It is an unidirectional device, meaning that it can only conduct current during overvoltage conditions. The device is designed to maintain a low impedance over a wide range of voltage, holding the impedance at a steady value until the voltage reaches a certain level. Once the voltage exceeds the specified level, the device’s resistance increases dramatically, limiting the amount of current which can flow through the circuit. The device also has a short response time, which ensures that the circuit is protected quickly and efficiently.

The working principle of the ERZ-V14D820 can be summed up as follows: when there is no external voltage applied to the device, the metal oxide layer maintains a constant low resistance. When the external voltage exceeds the voltage rating of the device, the metal oxide layer is stressed, and its resistance increases exponentially. The increased resistance then limits the amount of current which is allowed to pass through the device, preventing damage to the circuit.

The ERZ-V14D820 is also able to handle high energy ESD pulses without sustaining any damage or performance degradation. This makes it an ideal solution for a variety of high-voltage applications, especially in areas with a high degree of electro-magnetic interference. The device also features low capacitance and low capacitively coupling, making it ideal for protecting sensitive circuits.

In conclusion, the ERZ-V14D820 is a reliable and efficient varistor solution for a wide variety of voltage protection applications. Its low impedance and fast response time make it ideal for high-current applications, while its robust construction ensures that it can handle extreme temperatures and high vibration environments. The device’s working principle can be summed up as increasing the device’s resistance as the external voltage increases, thus limiting the amount of current which can pass through the device. The device is also capable of handling high energy ESD pulses without any damage, making it a great solution for many high-voltage applications.

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