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MSMLJ5.C0A: Application field and working principle of TVS-Diodes

TVS-Diodes or Transient Voltage Suppressors Diodes are semiconductor devices explicitly designed to protect sensitive electronic circuits from dangerous and potentially destructive transients such as electrostatic discharge. These devices also provide an anti-surge protection function in applications such as automotive and military systems.

Application field

TVS-Diodes are used in many modern applications such as automotive, communications, military, and consumer electronics. Most consumer applications have their own electronic circuits that need to be protected from overvoltage transients, and TVS-Diodes are the best way to do this. The TVS-Diodes stands out for its ability to limit both overvoltage and overcurrent peaks in a short amount of time.

TVS-Diodes play an essential role in any kind of industrial application, since they provide the necessary protection for sensitive components which are usually present in residential and industrial structures. This protection gets particularly important in more complex and sensitive environments such as automotive applications. The fast response time of the TVS-Diodes make them compatible with the harsh electrical environment present in these applications.

In addition, these devices allow for a huge flexibility of configurations, making them suitable for many different levels of protection. This makes them highly suitable for industrial applications, since each component on the line needs to have its own specific protection level. They also offer a low power consumption, which makes them suitable for applications that use batteries.

Working principle

The working principle of TVS-Diodes is relatively simple and can be easily explained. In general, these devices are designed to limit the voltage across its terminals, allowing the circuit to remain safe even in the presence of potentially dangerous transients or ESD events. For this to be achieved, the device has two terminals, the anode and the cathode.

The anode of the TVS-Diode is connected to the line and is exposed to any transients or overloads that appear in that line. In order to absorb the energy of these transients, the elements embedded in the TVS-Diode start to conduct current and thus reduce the voltage across the device which in turn helps in protecting the components of the circuit. This process is known as “clamping”, since the device “clamps” the voltage.

Once the TVS-Diode is no longer exposed to the transients or overloads it will return to its original state, retaining its properties and continuing to provide the necessary protection. This resetting ability is particularly useful for applications which need fast devices that can operate multiple times in quick succession.

Conclusion

TVS-Diodes are one of the most efficient devices available for providing protection against overvoltage and ESD transients. Thanks to their low power consumption, flexibility, and fast response times, these devices have become a key component in many modern industrial applications.

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