Multiple pulse handling capability approvals ul csa vde iec delivery mode bulk standard, taped versions on reel or in ammo pack upon request. Metal oxide varistors high energy disc varistor series metal oxide disc varistors features the disc varistor series of transient surge suppressors are industrial provided in disc form for unique. Article pdf available in american ceramic society bulletin 654. Understanding the arrester datasheet introduction part of selecting a good quality arrester is understanding the published data.
A varistor is an electronic component with an electrical resistance that varies with the applied. A metal oxide varistor starts conducting current at rated voltage and it stops the conduction if the applied. General technical data climatic category to iec 600681 4010556. Metal oxide varistors consist of approximately 90% zinc oxide as a ceramic base material plus other filler materials for the formation of junctions. Mov07dxxxk series metal oxide varistor rohs directive 200295ec jan.
Application examples, degradation, metal oxide varistor, modelling, nonlinearity. Metal oxide varistors rga varistor varistors are voltage dependent. Degradation phenomena in zno varistors exhibit several general. These are metaloxide varistors mov, multilayer varistors mlv, thyristors. Influence of bicoo synthetic multiphase on electrical. A varistor is a voltage dependent variable resistor, of which a mov is one type. Tvr10471 datasheetpdf list of unclassifed manufacturers. The basic conduction mechanism of a mov results from semiconductor junctions pn junctions at the boundaries of the zinc oxide grains. Pdf metal oxide varistors movs are the essence of surge protection. A good quality supplier will fully disclose the relevant data in a.
Pdf comparative study of metal oxide varistors movs for. Multi layer varistor overvoltage protection device raychem circuit protection products product. Varistor symbol and applications metal oxide varistor. Mouser is an authorized distributor for many varistor manufacturers including avx. Multilayer varistor application notes technical note 4047 effective december 2017 supersedes 2009 mlv families are available in 0201, 0402 and 0603 smd packages. This type is commonly known as the metaloxide varistor mov. A varistor remains nonconductive as a shunt mode device during normal operation when voltage remains well below its clamping voltage.
A crude way to simulate is back to back zener diodes for bidirectional or a single zener for unidirectional. Vdr metal oxide varistors standard additional resources ordering information the varistors are available in a number of packaging options. Zinc oxide surge arrester current sharing consideration technical information publ. Mov14dxxxk series metal oxide varistor rohs directive 200295ec jan. Bourns mov product portfolio offers 7, 10, 14, and 20 mm radial leaded varistor devices which protect against overvoltage transients such as lightning, power contact and power induction. Seswga 2364e edition 1, 199004 abb hv switchgear asea brown boveri introduction to meet high energy. It is called so as the component is made from a mixture of zinc oxide and other metal oxides like cobalt, manganese and. Application guidelines overvoltage protection metal. Zinc oxide zno varistor, which is a kind of polycrystalline semiconductor ceramic composed of multiple metal oxides and sintered using conventional ceramic. A surge in excess of the specified withstanding surge current may cause short circuits or package rupture with expulsion. The metal oxide varistor, with its extremely attractive priceperformance ratio, is an ideal.
Ingredients zinc oxide varistors consist mainly of zinc oxide about 90 % by weight and small amounts of other metal oxides additives such as bismuth, cobalt, antimony and manganese oxide. Varistors are in stock and ship sameday at mouser electronics from industry leading manufacturers. Jameco sells metal oxide varistor and more with a lifetime guarantee and same day shipping. The power so developed must be within the specifications shown on the. Energy typical capacitance part number acrms dc dc volts. The operation of metal oxide varistor and silicon carbide varistor are very similar. Metal oxide varistor mov parking stand surge arrester. This is achieved through a special dielectric material formulation which also results in higher repetitive surge ratings than other mov types. The gemov surge suppressor was developed first in 1973 by john d. In the 1930s, small multiplevaristor assemblies of a maximum dimension of less than. The most common type of varistor is the metaloxide varistor mov. Bulk on tape and reel on tape in ammopack fanfold the basic ordering code for each option is given in tables titled varistors on tape on reel, varistors on tape in ammopack and varistors in bulk. Metal oxide varistor mov parking stand surge arrester general eaton s cooper power series parking stand arrester combines metal zinc oxide varistor technology with a premolded rubber insulated. An experimental study of the failure mode of zno varistors.
Siov siov metal oxide varistors metal oxide va ristors 2008 published by epcos ag corporate center edition 112007 ordering no. Pdf zinc oxide varistors are electronic ceramic materials whose electrical. Within the useful varistor voltage range, the voltagecurrent. How a common surge strip works explained by ge global research engineer bill morris. For example if there is a power surge, the varistor, normally having a very high. Circuit protection from transient voltage by varistor.
Varistor s14 k50 3225 k50 varistor s14 k40 varistor s10 k50 varistor k50 varistor s10 varistor smetal oxide varistor text. How a surge protector works metal oxide varistor youtube. For further details refer to chapter taping, packaging and lead configuration for leaded varistors. Soldering recommendations for surface mount and multilayer. A varistor is a varying resistor whose resistance depends on the applied voltage. The electrical properties of znobi 2 o 3mno 2sio 2 based zbms varistors as a function of synthetic multiphase smp produced by presintering the mixture of 16bi 2 o 3 co 2 o 3 bicoo were. The metal oxide varistor or mov for short, is a voltage dependant resistor in which the resistance material is a metallic oxide, primarily zinc oxide zno pressed into a ceramic like material. Etc1, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors. Multiterminal varistor configuration download pdf info publication number us4212045a. A varistor is an electronic component that protects expensive devices from harmful power surges, much like a shock absorber. L20b metal oxide varistor, vac, 175vdc, 6500a peak, 1900pf, radial lead.
Comprehensive performances of zno varistors tailored by. Specifications are subject to change without notice. This type contains a ceramic mass of zinc oxide grains, in a matrix of other metal oxides such as small amounts of bismuth, cobalt. China led ring light china natural garlic china centrifugal submersible pump china. The name has been coined by linguistic blend of words. The ciii varistor series of metal oxide varistors movs are specifically designed for applications requiring high surge energy absorption ratings and superior multiple pulse absorption rating. If a transient pulse often measured in joules is too. If pulses of longer duration or multiple pulses are applied, the surge current must be derated as. Users should verify actual device performance in their specific applications. Tti offers several options to limit excessive voltage experienced in todays circuits. Jvr 10nk datasheet pdf pinout metal oxide varistor. Varistors are voltage dependent, nonlinear devices which have electrical characteristics similar to backto back zener diodes. Cnr14d221k varistors datasheet pdf oxide varistors.
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