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Jun 13, 2021 · The Metal Oxide Varistor is a voltage-dependent resistor made of metal oxides ceramic powders such as zinc oxide and some of the other metal oxides such as cobalt oxides, manganese, bismuth, etc. A MOV consists of around 90% zinc oxide and a limited quantity of other metal oxides. Between two metal plates known as the electrodes, the ceramic ...
An attractive property of the metal oxide varistor, fabricated from zinc oxide (ZnO), is that the electrical characteristics are related to the bulk of the device. Each ZnO grain of the ceramic acts as if it has a semiconductor junction at the grain boundary. A cross-section of the material is shown in
Jan 26, 2015 · 1. Metal-oxide varistors (MOVs) are available in a variety of form factors and sizes for a broad range of applications. The radial leaded disc type is the most common version.
Form Factor and Applications. Product specifications for metal oxide varistors (MOV) include mounting style, lead type, and application. Through hole technology (THT) mounts components on a printed circuit board (PCB) by inserting component leads through holes in the board and then soldering the leads in place on the opposite side of the board.
Metal oxide varistor – Described above, the MOV is a nonlinear transient suppressor composed of zinc oxide (ZnO) Silicon carbide varistor – At one time this was the most common type before the MOV came into the market. These components utilize silicon carbide (SiC). They have been intensively used in high power, high voltage applications.
Mar 22, 2024 · The operation of metal oxide varistor and silicon carbide varistor are very similar. A metal oxide varistor starts conducting current at rated voltage and it stops the conduction if the applied voltage is below the threshold value. The main difference between a silicon carbide varistor and a metal oxide varistor is the amount of leakage current.
A metal oxide varistor is a voltage-dependent resistor. A metallic oxide varistor is around 90% Zinc oxide and 10% other metallic oxides. Typical metal oxide varistors get made with ceramic powers, such as zinc oxide grains.
