V390CH8T Circuit Protection

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Varistors, or Voltage Dependent Resistors (VDRs), provide a simple and cost-effective way to provide overvoltage protection. When an overvoltage is applied to a varistor, its resistance decreases so that the current is limited to safe levels. The V390CH8T is a type of varistor designed to protect data lines and power supply rails in consumer electronic systems. It is a low cost and low profile solution suitable for use in a variety of applications.

The V390CH8T is a metal oxide varistor. It is designed to provide overvoltage protection by limiting the peak voltage on a line to safe levels when it is subject to transient voltages. This is accomplished by the varistor’s unique semiconductor characteristics, which cause the resistance of the device to decrease as an overvoltage is applied. The V390CH8T can handle peak voltages up to 630 Volts, and peak currents up to 0.3 Amps.

The V390CH8T is designed for use in high-speed consumer electronic applications that require protection from overvoltage events. The device can provide protection for data lines such as USB ports, power supply rails, and audio lines. Additionally, it can be used in lighting circuits and AC DC adapters. Its low profile design allows it to fit into even the smallest of enclosures, making it particularly well-suited for use in portable devices.

The V390CH8T works on the principle of nonlinear resistance. The varistor is composed of a semiconductor material with two terminal contacts. When a voltage is applied across the terminals, the resistance of the device decreases when the applied voltage exceeds a certain threshold, typically called the “clamping voltage”. This clamping voltage is set by the device designer and is based on the required level of protection.

The V390CH8T also has an operating temperature range of -40°C to +85°C, making it suitable for use in a variety of environments. Furthermore, the device has a low failure rate of less than 1 failure per billion hours of operation, making it highly reliable.

In summary, the V390CH8T is a low profile, low cost metal oxide varistor designed for use in consumer electronics applications. It provides up to 630V peak voltage protection and has a failure rate of less than 1 failure per billion hours of operation. It works on the principle of nonlinear resistance and has a wide operating temperature range of -40°C to +85°C.

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