V20P17P

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TVS (Transient Voltage Suppressor) or Varistors, MOVs (Metal Oxide Varistors), often referred to as "surge protective devices", are designed to protect low voltage circuits from transient voltage impulses. They are usually used for communication equipment, computers, and other sensitive electronics.

A TVS is an electronic device designed to provide voltage protection by clamping the voltage when a specified threshold is exceeded. The TVS is designed to limit the peak surge voltage that can occur during a power surge. They are similar to Metal Oxide Varistors in that they provide higher transient current ratings than traditional MOVs. However, they are also designed to provide better clamping voltage performance than MOVs at higher frequency rates.

TVS devices are typically used to protect electronic circuits from the effects of spikes and transients caused by lightning strikes, power line surges, and other transients that occur from the electrical power grid. They are also used in automotive and industrial applications where transients can occur from rapid switching of power loads. TVS devices protect circuits from damage due to these transients by clamping the transient voltage at a safe level.

TVS devices vary in size, shape, and power rating. Smaller devices are typically used for low power applications, such as consumer electronics, while larger devices are used for higher power applications, such as servers, medical equipment, and industrial automation. TVS devices are generally constructed from a tin/zinc alloy and a variety of other materials, including ceramic, resin, and metal oxide.

The working principle of the TVS device is based on a metal-oxide varistor (MOV). MOVs are used to absorb energy from high voltage transients that exceed the device’s threshold voltage. When the voltage across the TVS exceeds its break-down voltage, the MOVs conduct electricity, allowing the transient to pass through the TVS and be dissipated as heat. As the MOVs conduct electricity, the voltage across the TVS is clamped to a safe level.

TVS devices are typically used to protect circuits from voltage transients and have two primary application fields. The first application field is communication systems, where the devices are used to protect communication electronics from power surges and fluctuations. The second application field is automotive applications, where they are used to protect electronic systems from transients caused by vehicle ignition systems and other electronic components.

In summary, TVS devices are widely used as surge protective devices to protect low voltage electronic circuits from transient voltage pulses. The working principle of a TVS is based on a metal-oxide varistor and it functions by clamping the transient voltage to a safe level. TVS devices are typically used in communication systems and automotive applications, as well as in many other low-voltage applications.

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