Global metal oxide varistors market is segmented by application into electronic discharge esd and overvoltage protection. This type contains a ceramic mass of zinc oxide grains, in a matrix of other metal oxides, such as small amounts of. Vdr metal oxide varistors standard additional resources ordering information the varistors are available in a number of packaging options. Distributor of metal oxide, thermofuse and multilayer varistors. The specified voltage shall be applied between both terminals of the specimen connected together. Metal oxide varistors movs are housed in a surge arrestor and composed of zinc oxide 90 wt% and other metal oxides such as antimony, bismuth, cobalt, manganese, and nickel.
Zenamic is the registered trademark for our oxidized metal varistors. Metal oxide varistors movs are a type of resistor with significantly nonlinear currentvoltage characteristics commonly used in power lines to protect against overvoltages. Electrical specifications and ordering codes maximum ratings ta. Energy typical capacitance part number acrms dc dc volts. Heavyduty varistors surge current capability up to 100 ka wide operating voltage range 75 1100 vrms. Accroding to the market requirement for a high quality varistor, and based on the problems exit during production procedure, fatech team developed a kind of high performance, reliable varistor special for. Industrial high energy metal oxide varistors are large terminal mount devices made with zinc oxide discs enclosed in epoxy polymer cases to provide complete electrical isolation. Metal oxide varistors tnr g series are decided to be retentive products and be replaced by our new products of v series. To assure our customers quality harris metal oxide varistors and other products and services at international standards, galco maintains iso90012000 certification.
V20e300p ultramov series radial leaded varistors littelfuse. Zinc oxide varistor are nonlinear resistors utilize a semiconductor electronic ceramic element mainly composed of zinc oxide and its resistors change as a function of the applied voltage. Stability of zinc oxide varistors a thesis submitted to the university of manchester for the degree of doctor of philosophy in the faculty of engineering and physical sciences 2014 poonsuk poosimma. Chbaureihe varistoren fur oberflachenmontage littelfuse. Metal oxide varistors are nonlinear circuit components that conduct large currents when the applied voltage exceeds a certain value, usually volts ac rms. Help identifying a varistor electrical engineering stack. Recycling zinc from metal oxide varistors through leaching. Metal oxide varistor mov technology is the most prevalent technology utilized in electrical transient protection products today. Ein varistor wird auch als vdr bezeichnet fur voltage dependent resistor, also spannungsabhangiger widerstand. Siov metal oxide varistors leaded varistors, standard series seriestype. A varistor is an electronic component with an electrical resistance that varies with the applied. Leaded varistors b722 standard series please read cautions and warnings and page 6 of 47.
I have been reading on wiki about metal oxide varistors, and i now understand the basics of what they do and how they work. The ultramov metal oxide varistor series is designed for applications reqiring high peak surge current. The most common modern type of varistor is the metaloxide varistor mov. The metal oxide varistor, with its extremely attractive priceperformance ratio, is an. The metal oxide varistors offer a choice of varistor voltages from.
Nippon chemicon offers varistors, which are also suitable for automotive compliance according to aecq200. It is called so as the component is made from a mixture of zinc oxide and other metal oxides like cobalt, manganese and. The metal oxide varistor, with its extremely attractive price performance ratio, is an ideal component for limiting surge voltage and current as well as for ab sorbing. Radial lead metal oxide varistors energy j surge current varistor voltage v max. The metal oxide varistors offer a choice of varistor voltages from 18 820 volts and vrms voltages from 11 510 volts. Numerical modelling of metal oxide varistors boris zitnik1, maks babuder1, michael muhr2, mihael zitnik3 and rajeev thottappillil3 1 milan vidmar electric power research institute, ljubljana. Specifications and part number crossreferences specifications descriptions and. The new nt series of thermofuse varistors consists of a disk varistor connected in series with an integrated ther mally coupled fuse designed to trip in the. Tmovbaureihe vor thermischer uberlastung geschutzte varistoren. Investigations into recycling zinc from used metal oxide. Zenamic features large surge current handling ability and transient overvoltage handling. Vdrs series vdr metal oxide varistors standard vishay. Siov metal oxide varistors general technical information. Metal oxide varistors, more commonly known as movs are devices that provide excellent transient voltage suppression.
Please explain metal oxide varistors mov datasheet all. Leaded varistors b722 standard series please read cautions and warnings and page 6 of 47 important notes at the end of this document. Pdf on the use of metal oxide varistors as a snubber. They are a type of nonlinear device that feature similar characteristics to zener. Many industry manufacturers, including current technology, integrate. Epcos metal oxide varistors siovs are designed for specific applications and should not be used for purposes not identified in our specifications, application notes and data books unless otherwise. But as i have not worked with movs before i dont fully understand. Metal oxide variators mov or now generically referred to as siovs are commonly rated by their rms withstanding voltage or 385vac in this case, then above this by a joule rating 05 which seems low. Article pdf available in american ceramic society bulletin 654.
Metal oxide varistors hvp high voltage products gmbh. Nippon chemicon corporation metal oxide varistorstnr. Global metal oxide varistors market is segmented by end user into line. The devices have a high current handling, high energy absorption capability and fast. Global metal oxide varistors market research report 2021. On the use of metal oxide varistors as a snubber circuit in solidstate breakers conference paper pdf available october 20 with 323 reads how we measure reads. In case of your new design andor application, please order by replacement. Siov siov metal oxide varistors metal oxide va ristors 2008 published by epcos ag corporate center edition 112007 ordering no. Clamping 250v 4,1 460 6 250v 4,5 7,5 420460v 6,5 8 250v 4,9 28 7,5 420550v 7 30 8 20 0,8 0,820. Vdrs series vdr metal oxide varistors standard, available from vishay intertechnology, a global manufacturer of electronic components. Nippon chemicon corporation metal oxide varistorstnr manufacturing and selling. Features include high energy absorption and surge load capabilities, low leakage currents, selfprotection under abnormal overvoltage. Allowable voltage varistor voltage withstanding surge current 8 20.
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