V420LU40CPX2855

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V420LU40CPX2855 Application Field and Working Principle

Varistors, MOVs, or Transient Voltage Suppressors (TVS) are devices used in electrical systems to protect from excessive voltage. The V420LU40CPX2855 is a TVS designed to provide transient protection from voltage surges and spikes in power transmission and distribution networks. This type of device is important due to the ever-increasing reliance on digital systems which can be damaged or destroyed by exposure to abnormally high levels of voltage.

Overview of V420LU40CPX2855

The V420LU40CPX2855 is a two-terminal, non-polarized device that is designed to protect from transients up to 400V. It can be used in various network configurations including AC/DC, DC/DC, AC/DC, and single line. It is designed to provide low-impedance protection with a wide range of voltage and current levels. Its high temperature resistance ensures that it can handle temperatures up to 125 degrees Celsius.

Working Principle

The V420LU40CPX2855 operates on the principle of gas breakdown. In order to protect the system, the TVS has to ensure that the high voltage is dissipated across its terminals. This is done by creating an ionized gas field across the terminals. The higher the voltage across the terminals, the stronger the gas field becomes. If the voltage exceeds the breakdown voltage of the device, the electric field will become strong enough to create an arc and the voltage will be dissipated.

The device also utilizes a diffuse barrier layer which acts as a filter and can further reduce the voltage transient. The diffuse barrier layer works by dissipating energy through a slow diffusion process. This allows the device to provide protection even when the voltage is above the breakdown voltage of the device.

Application Field

The V420LU40CPX2855 can be used to protect all types of digital systems and audio-video equipment. It can also be used in power supplies, industrial equipment, automotive circuits, and communication networks. It is particularly suited to power distribution networks with high levels of voltage transients. It can also be used in signal line protection, power line noise suppression, and AC/DC power line protection.

Conclusion

The V420LU40CPX2855 is a two-terminal type of TVS which provides superior protection from voltage transients. It operates on the principle of gas breakdown which allows it to dissipate high levels of voltage across its terminals. Its high temperature resistance makes it suitable for use in demanding environments. This device is suitable for use in power supplies, industrial equipment, automotive circuits, communication networks, and all types of digital systems.

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