TND07G-470KB00AAA0

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Varistors, MOVs, and TVS are electronic devices used to protect downstream components from voltage or current transients. The TND07G-470KB00AAA0 is a special type of overvoltage protection component from TND Components, suitable for a variety of applications. This article will discuss the application field and working principle of TND07G-470KB00AAA0.

Application Field

The TND07G-470KB00AAA0 is primarily designed to provide overvoltage protection for components and equipment. It offers a wide operating temperature range from -55°C to +85°C, making it suitable for a variety of applications in harsh environments. It also has excellent surge capabilities, capable of handling high crest voltages up to four times the rated voltage and withstanding 8/20μs single pulse wavefront up to 10kA.

The TND07G-470KB00AAA0 is most suitable for computer peripheral connections, power supplies, and telecom and network transceiver applications. It could also be used in automotive electronics, telecommunication systems, consumer electronics, smart home appliance system, and solar applications.

Working Principle

The TND07G-470KB00AAA0 is a zinc oxide varistor, which is operated via a breakdown mechanism. In the formulation of zinc oxide varistor, zinc oxide acts as the active component while metal oxide filler greatly enhances the breakdown strength and thermal stability. The basic structure of the TND07G-470KB00AAA0 is a combination of zinc oxide varistor disc with two silver-plated leadframes embedded in a UL 94 V-0 approved epoxy molding compound.

When a surge event occurs, the varistor begins to carry its full-rated current capacity and this will cause the valence electrons located at the zinc oxide lattice to be activated and migrate to the oxygen ions, forming a conducting channel between two points in the lattice. This will lead to a rapid voltage drop across the device, thus dampens the surge energy and protect downstream components from overvoltage.

The TND07G-470KB00AAA0 features ultrasmall size and low clamping voltage which allows compact design with less losses compared to Surge Protective Devices, ideal for advanced overvoltage protection solutions with high density design.

Conclusion

The TND07G-470KB00AAA0 is a special type of varistor mainly used for transient voltage protection, featuring ultra-small size, wide operating temperature range, and low clamping voltage. It is capable of withstanding 10kA single pulse wavefront and offers excellent surge protection capabilities. It is mainly used for computer peripheral connections, power supplies, and telecom and network transceiver applications, as well as a variety of other applications.

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