Metal Oxide Varistor Code

This type contains a ceramic mass of zinc oxide grains in a matrix of other metal oxides such as small amounts of bismuth cobalt manganese oxides sandwiched between two metal plates which constitute the electrodes of the device.

Metal oxide varistor code. A gadget may have thousands of transistors resistors and other components but only one or two varistors. Date hs code description origin country port of discharge unit quantity value inr per unit inr nov 22 2016. The material is arranged between two metal plates or electrodes to interact with each other. Metal oxide varistors consist of approximately 90 zinc oxide as a ceramic base material plus other filler materials for the formation of junctions.

While it may look similar to a capacitor you can identify the device by its color markings and. Then followed by a date code yyww for year and week. Varistors are voltage dependent nonlinear devices which have electrical characteristics similar to back to back zener diodes. Metal oxide variators mov or now generically referred to as siov s are commonly rated by their rms withstanding voltage or 385vac in this case then above this by a joule rating 05 which seems low.

They are composed primarily of z n o with small additions of other metal oxides such as bismuth cobalt magnese and others. The boundary between each grain and a neighbor forms a diode junction which allows. A metal oxide varistor or mov protects sensitive electronic equipment from voltage spikes in the power line. It is called so as the component is made from a mixture of zinc oxide and other metal oxides like cobalt manganese and so on and is kept intact between two electrodes which are basically metal plates.

Metal oxide varistor basics. The most common modern type of varistor is the metal oxide varistor mov. Mov s are the most used component to protect heavy devices. A varistor that is made with a combination of zinc oxide other kinds of metal oxides such as manganese cobalt etc is known as metal oxide varistor.

Mov 07d511k metal oxide varistor semi conductors devices. Metal oxide varistors and multi layered varistors.