V18MLE0402NR Circuit Protection

The V18MLE0402NR is a device that belongs to the TVS - Varistors, MOVs family, which is basically a medium-sized general purpose metal oxide varistor with low leakage current and high transient protection capabilities. It is typically used to provide surge protection for automotive applications.

The V18MLE0402NR is constructed with a zinc ore dielectric and an encapsulant material, and it features a nonlinear resistance that can be used to protect circuits from a high level of transients or voltage spikes. This is done by providing a “short” to current flow when an excessively high voltage is present, thus limiting the amount of current that is allowed to pass through the circuit.

The working principle of the V18MLE0402NR is simple. When an excess amount of voltage is applied, it reduces the electrical resistance across its surface and causes a sudden spike in the current flow. This sudden current surge quickly heats up the device, producing thermal energy that dissipates the excess voltage to a safe level. This allows the device to operate normally until the excess voltage is gone.

The V18MLE0402NR is commonly used in automotive applications, such as vehicle interior electronics, audio systems, and brake and acceleration systems. It is also used in consumer products, such as hand-held electronic devices, laptop and notebook PCs, and power supplies. The V18MLE0402NR is also used in industrial applications, such as telecommunications, industrial control systems, and security systems.

The V18MLE0402NR can also be used to protect sensitive electrical parts in high-voltage environments, such as in electrical grids. It can also be used in solar energy systems to prevent over-voltage caused by lightning or other induced voltages. In addition, it is often used in the protection of medical equipment.

In summary, the V18MLE0402NR is a medium-sized general purpose metal oxide varistor with low leakage current and high transient protection capabilities. It is typically used to protect circuits from a high level of transients or voltage spikes in automotive, consumer, and industrial applications. It is also used in electrical grids, solar energy systems, and medical equipment.