VC1812K801R011

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TVS (Transient Voltage Suppressor) devices are used to provide electrical circuits with protection against over-voltage transients. Varistors, MOVs (Metal Oxide Varistors), and Gas Discharge Tubes are all types of TVS devices which are used for protection against over-voltage transients. In this article, we will be looking at the VC1812K801R011 application field and working principle.

VC1812K801R011 Application Field

The VC1812K801R011 varistor is a wide voltage device designed for protecting circuits against over-voltage transients. The rated voltage of the device is 18V and the resistance range is 6.5 to 13.5 Ohms. It is primarily used as an over-voltage protection device in data/power/telecom circuits such as Ethernet, USB, HDMI, DVI, and other similar communication lines. It can also be used as a protection device in other applications where surge protection is needed.

VC1812K801R011 Working Principle

The VC1812K801R011 varistor works by clamping unwanted high voltages that are outside its rated voltage range. It does this by using its piezoresistive effect, which essentially means that under an external electrical stress it changes its resistance from a low value to a high value. This results in the device attenuating any high voltage signals by limiting the voltage at the output and shunting the current away from the load.

Furthermore, the VC1812K801R011 device also offers superior ESD protection, as it has a robust construction and withstands a high surge current up to 1000A. The device also has a low capacitance due to its multilayer construction, which helps to ensure minimal EMI/RFI interference with the signal.

Conclusion

In conclusion, the VC1812K801R011 is an excellent over-voltage protection device for a wide variety of applications. It offers superior ESD protection, minimal EMI/RFI interference, and a robust withstand surge current rating of up to 1000A. Its low capacitance construction makes it an ideal choice for high speed communication lines (Ethernet, USB, etc).

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