V140LT10APX2855

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TVS - Varistors, MOVs are vital components in today\'s electronic systems, and the V140LT10APX2855 in particular is widely used in fields such as automotive, industrial, telecommunications, consumer, and medical. The device provides circuit protection by reliably clamping and absorbing lightning or electrostatic discharge (ESD), as the device was designed specifically for this purpose.

The device features an integrated protector for 120VAC which provides both surge and ESD protection, surpassing the various ESD industry standards for a variety of high speed data lines, making it ideal for protecting sensitive applications. It also provides protection against lightning-level surge transients.

The V140LT10APX2855 is a varistor that is part of the Littelfuse TVS device family. It feature an external diameter of 10mm with a very fast response time of 10 nanoseconds with response times decreasing further for higher energy events. The device is minimum leakage current rated and the over voltage rating of 140V.

The working principle of the V140LT10APX2855 can be explained by examining its structure. The device is designed with an insulator which is connected to a silicon wafer. This wafer is then connected to a metal electrode. When there is an excess amount of voltage that is applied to the device, the energy will induce an electric field across the insulator. As the electric field increases, the electric field at the Si-metal interface will exceed the breakdown voltage, which then causes current to flow through the device. This consequently decreases the capacitance and shunts the incoming energy. This lowers the voltage across the device and the electric field dissipates, thus restoring the capacitor action of the condenser.

This process of hysteresis is what enables a varistor to clamp a potential voltage spike or surge that would otherwise damage a sensitive component or circuit. The advantage of this device is that it offers excellent fire safety, and it can be easily implemented in the system.

Overall, the V140LT10APX2855 is an ideal solution for the protection of low voltage electronic circuits and systems. The device is highly reliable, cost-effective and easy to integrate in applications where ESD and lightning protection is required. Thanks to its fast response time and excellent surge clamping capabilities, it can be used in highly sensitive applications as well.

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