MOV-20D471K

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The MOV-20D471K is a component categorized as a Transient Voltage Suppressor, sometimes referred to as a Varistor. Varistors serve as a safety feature that protects integrated circuits, leads, and other parts from shock caused by spikes in voltage. They are an open-circuit device that diverts and filters high voltage spikes away from sensitive parts and help with grounding. MOV-20D471K devices are found in AC-DC, DC-DC, Isolation, and UPS circuits where over-voltage protection is needed.

The MOV-20D471K is usually found in circuits supplying tools and appliances that require low energy, such as power adaptors and battery backups. It can also be used in automotive applications, such as audio systems, car alarm systems, and automobile chargers. Its 21V peak that prevents damage to the circuit in case of high-voltage from other sources, such as a power surge.

The Working Principle of the MOV-20D471K is based on the thermally-activated behavior of zinc oxide. The device has a special ceramic body and 2 lead wires that allow an internal flow of current. When the voltage is normal, the internal current flow is limited and the device works at its nominal voltage. When the voltage is higher, the thermal behavior of the zinc oxide inside the device activates, widening its operational range and allowing a larger current to flow through. When the current is larger, the device dissipates the excess energy as heat.

The MOV-20D471K is an advanced form of Varistor. The component is equipped with an innovative protection circuit that helps protect it from hazardous voltages and other environmental factors, such as humidity, temperature, and radiation. The circuit can detect potential voltage issues and react quickly by diverting the current in a different direction. This protects the device from damage and helps maintain its safety level for an extended period of time.

In short, the MOV-20D471K is an advanced form of Varistor that is designed to provide protection from high voltage spikes. It is ideal for applications that require low energy, such as power adaptors and battery backups. Its innovative protection circuit allows it to detect potential voltage issues and quickly divert the current in a different direction, protecting the device from damage and ensuring its safety.

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