V18MLE0603NT

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TVS - Varistors, MOVs is a kind of surge protection component mainly used to protect the equipment from the impact of abnormal voltage. The V18MLE0603NT is a chip from this family of components. It is mainly used for circuit protection, and the working principle is as follows.

The V18MLE0603NT is a kind of Central-point Varistors (CPV) which mainly used for preventing high voltage surge and induction. It is mainly used for a 5V USB 2.0 Type-C port, DC/DC converter and DC/AC power line. The chip can also be used in HDMI 2.0, Ethernet ports, and other low-voltage high-speed communication ports. It can protect the circuit and components from the damage caused by static electricity, over-voltage, over-current, and external electromagnetic interference. It can also be used in circuits in places such as chipset protecting on motherboards, RF port protecting, and mobile phone port protection.

The working principle of the V18MLE0603NT is mainly based on the "nonlinear resistance" principle. This component has two leads to the electronic device that one of them is connected to the ground means the other one connects the destructive over voltage. When the voltage reaches the threshold, the component starts to clamp the voltage and the component connects these two leads, then limiting the voltage reducing the current surge to a safe level so that it can protect the electronic device from suffering any kind of damage.

The V18MLE0603NT works through the ZnO material, Zinc Oxide has a property of nonlinear resistance and when the applied voltage increases the resistance decreases, this causes the chip to reduce the electrical current to a safe level from over-voltage or EMI surge. The nonlinear resistance property of the component clamps the current and makes it limited within the fixed level.

Conclusion

The V18MLE0603NT is a chip from the family of surge protection components mainly used for circuit protection. It is an application of the “Nonlinear Resistance” principle, and it helps to protect the electronic device from overvolatage or EMI surge by limiting the current to a safe level. It can be used in fields such as circuit protection, 5V USB 2.0 Type-C port, DC/DC converter, DC/AC power line, HDMI 2.0, Ethernet ports, and other low-voltage high-speed communication ports, as well as chipset protecting, RF port protecting, and mobile phone port protection.

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