VDRH10S300TSE

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TVS - Varistors, MOVs, are designed to protect electrical systems from electrostatic discharge, voltage surges, and electrical spikes. Here, the VDRH10S300TSE Varistor is discussed. The application field and working principle are elaborated on to give a clear understanding of these components.

Application Field

The VDRH10S300TSE Varistor is ideal for power supply line protection for consumer electronics of medium power. It is used in telecommunications, industrial electronics, information and communication technology, military and aerospace. It is suitable in circuits of up to 800 Volts, needing a high degree of reliability. It can also be used in the automotive sector, railway, solar system, and communications equipment.

Working Principle

The Varistor is a non-linear voltage-dependent resistor which is composed of a ceramic body, electrodes, and resistive materials. It is designed to protect against transient overvoltages. It is created using a process that combines ceramic and metal material that is then formed into various shape components.

When subjected to an electrical surge, the resistive materials inside the varistor begin to conduct electricity. Because it is voltage-dependent, the device will conduct even more current as the voltage increases, up to a certain limit or rated breakdown voltage. When the voltage reaches its breakdown voltage, the Varistor will enter in a high-conductance mode and absorb the majority of the surge energy.

The energy is dissipated in the form of heat, which is why the Varistor needs to be carefully mounted on a thermal mass to make sure the heat is spread effectively throughout the system.

By dissipating the energy of a transient, the Varistor protects the equipment by preventing electrical arcing and fault currents. It is designed to clamp the voltage to a safe level, providing a low resistance path to the excess current and allowing it to be discharged quickly and effectively.

Conclusion

The VDRH10S300TSE Varistor is designed to provide a low-resistance path with a high voltage breakdown level. It is used in a wide range of applications, from consumer electronics to telecommunications and military applications. It is designed to protect against transient overvoltages, and the energy generated is dissipated in the form of heat. It is an ideal solution for power supply line protection and offers a high degree of reliability.

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