MOV-20D781K

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Varistors, also known as voltage-dependent resistors (VDRs), are nonlinear two terminal electronic components with resistance that changes in proportion to the voltage applied across its terminals. Varistors are specified as MOVs, or metal oxide varistors. MOV-20D781K is a metal oxide varistor in a disc package. It features large surge absorption capability and offers excellent transient current absorption in a range of applications.

MOV-20D781K application field and working principle is quite great. The device consists of a modified ZnO ceramic material layer whose resistance decreases with increasing applied voltage. The materials used in the layer of the MOV-20D781K include metal oxides, which effectively absorb and redirect excess current. Additionally, the component is designed for high resistance when voltage is below a certain level, ramping up resistance quickly as the voltage rises.

MOV-20D781K can be used in a number of applications where energy and voltage spike management is desirable. Common applications include encryption and anti-tampering measures, radios and wireless communication, surge protection in the home, and surge protection in consumer electronics. The device is also increasingly being used in the automotive industry due to its ability to withstand extreme temperatures.

The MOV-20D781K operates on a parasitically induced current surge. When the voltage across its terminals exceeds the rated value, the current passing through it will be limited due to the behavior of the polymer film. The limited current reduces the peak value of the surge and helps suppress the voltage down to a safe value.

The actual amount of ripple voltage suppression provided by the MOV-20D781K depends on several factors, including the size of the MOV, its rated voltage, and the magnitude and duration of the surge voltage. The MOV-20D781K can easily stand up to a surge of 6 kV. Its gas vent technology and low residual voltage can help protect sensitive components from overvoltage spikes without needing an additional Zener diode.

In addition to overvoltage and overcurrent protection, the MOV-20D781K can also be used to filter noise. It can be used in combination with a snubber circuit to reduce switching noise from relay coils, solenoids, and other low-voltage circuits. The device can also be used in combination with a capacitor to filter out high frequency noise.

The MOV-20D781K is a reliable and economical way to protect sensitive components from overvoltage and overcurrent surges. Its gas vent technology and fast-acting response can provide excellent protection for a variety of applications. The ability to combine it with other components to filter noise makes it a great option for a wide range of applications.

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