Zinc oxide varistor 50 series, tvr10471 datasheet, tvr10471 circuit, tvr10471 data sheet. Ingredients zinc oxide varistors consist mainly of zinc oxide about 90 % by weight. Metal oxide znobased varistor ceramics 331 conductors. The structure of the body consists of a matrix of conductive zinc oxide grains separated by grain boundaries which provide pn junction semiconductor characteristics. Zinc oxide zno varistor, which is a kind of polycrystalline semiconductor. Metal oxide varistor 7mm disc, jvr07nk65p pdf download rfe international. Measuring the energy handling capability of metal oxide. Zinc oxide is an inorganic compound used in a number of manufacturing processes. Specifications are subject to change without notice. Zinc oxide varistors are strongly nonlinear resistors that have been used to regulate transient voltage surges of unwanted magnitude for high voltage and powerrelated applications, such as surge. Jvr10nk datasheet, jvr10nk pdf, jvr10nk pinout, jvr10nk equivalent, jvr10nk replacement metal oxide varistor rfe, schematic, circuit, manual jvr10nk datasheet pdf metal oxide varistor. In this chapter the status of zno varistors is assessed. The resistance material in a metal oxide varistor mainly consists of zinc oxide grains that are pressed as a ceramic mass. From microstructure to macrocharacteristics, first edition.
Etc1, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors. Within the useful varistor voltage range, the voltagecurrent. Rga series zinc oxide varistors are nonlinear resistors, consisting mainly of zinc oxide and several kinds of met al oxide additives. Panasonics mov are available in various disc dimensions 5mm to 20mm diameter, varistor voltages and ul certificated. Available formats pdf please select a format to send. For higher frequencies, such as radio communication equipment, a gas discharge tube gdt may be utilized. Zinc oxide varistor 1 specification tvr series surge protection features recommended applications approvals 1. These varistors are composed of zinc oxide and some other metal oxides, which provide the desired characteristics for these varistors. Application of zinc oxide varistors gupta 1990 journal of the. The commercially available varistors are fabricated by sintering the zinc oxide powder with bismuth oxide and a number of other additives, the exact compositions being proprietary information.
Zinc oxide is an inorganic compound with the formula zn o. Znozno grain boundary, rich of bismuth, which is a highly resistive phase, is the main cause of. Zno is a white powder that is insoluble in water, and it is widely used as an additive in numerous materials and products including rubbers. This type contains a ceramic mass of zinc oxide grains, in a matrix of other metal oxides, such as small amounts of. The most common modern type of varistor is the metaloxide varistor mov. Tvr14471 pdf download buy low price, high quality tvr varistor with worldwide shipping on tvr datasheet, tvr series zinc oxide varistor, tvr pdf, tvr data sheet search for nov. File number e3168 general information the mov14dxxxk series of 14 mm radial leaded varistor devices protects against overvoltage transients such as lightning, power contact and power induction. Varistor symbol and applications metal oxide varistor. Plastic encapsulated type for surge protection size. Ohwada skip to main content accessibility help we use cookies to distinguish you from. The mixture consists 90 % of zinc oxide grains and the other 10 % is. Vdr metal oxide varistors standard additional resources ordering information the varistors are available in a number of packaging options. V1maa vb c v1maa vb c apower voltage ripple coefficient usually take 1. Cnr07d471k varistors datasheet pdf oxide varistors.
Modeling of electrical transport in zinc oxide varistors article pdf available in advances in radio science 12. This paper gives an overview of the failure modes of the zno varistors and investigates the characteristics of the varistor when subjected to. Zinc oxide varistor zinc oxide varistor are nonlinear resistors utilizing semiconductor electronic ceramic element mainly composed of zinc oxide and its nonlinear resistance change as a function of the applied voltage. 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. Zinc oxide varistors ve 07091724 vf 0507101420 max. 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. Both bi 2o 3rich and zn 7sb 2o 12 spinel phases are also usually present at the grain boundaries of the zno, but the presence of a bi 3zn 2sb3o14 phase is possible as well. It s called varistor or transient surge absorbers 18v1.
Degradation of zinc oxide varistors volume 5 ken takahashi, t. Zinc oxide znobased pastes with tailored rheological prop erties have been developed for directwrite fabrication of thickfilm varistor elements in highly. Tvr10471 datasheetpdf list of unclassifed manufacturers. Zinc oxide varistors are very complex systems, and the dominant mechanism of voltage barrier formation in these systems has not been well established. Zinc oxide varistor selection only reference varistor voltage varistor voltage should be more than the operating voltage in over protective circuit, the formula is shown as the following. Fenghua zinc oxide varistor fenghua hk electronics ltd. Var series zinc oxide varistor va r d k packing type. It can be found in rubbers, plastics, ceramics, glass, cement, lubricants, paints, ointments, adhesives, sealants, pigments. Zinc oxide znobased pastes with tailored rheological properties have been developed for directwrite fabrication of thickfilm varistor elements in highly integrated, multifunctional electroceramic devices.
Zinc oxide varistors are ceramic semiconductor devices with highly nonlinear curentvolt age characteristics and with an. The symmetrical, sharp breakdown characteristics shown in figure 1 enable the varistorvaristor impedance changes many orders of. Varistor testing introduction as with any device, metaloxide varistors possess a number ofway to assure correlation of measured values between maker and user. Mov14dxxxk series metal oxide varistor rohs directive 200295ec jan. A wide variety of zinc oxide varistor options are available to you, there are 399 suppliers who sells zinc oxide varistor on, mainly located in asia. Maida development company 201 south mallory street hampton, virginia 23663. The littelfuse varistor is composed primarily of zinc oxide with small additions of bismuth, cobalt, manganese and other metal oxides. Pdf modeling of electrical transport in zinc oxide varistors. Model for zinc oxide varistor journal of materials. Circuit protection from transient voltage by varistor. Article pdf available in american ceramic society bulletin 654. Are nonlinear resistors utilize a semiconductor electronic ceramic element mainly composed of zinc oxide and its resistors change as.
Jvr 20nk metal oxide varistor components datasheet pdf data sheet free from datasheet data sheet search for integrated circuits ic. Siov 1 varistors have been proven to be excellent protective devices because of their application flexibility and high reliability. Mechanical properties and microstructure of zinc oxide. Time lag between application of surge and varistors turnon conduction state. These properties then form the basis for defining the application parameters that are directly related to the nonlinear current. This product has tvr series zinc oxide varistor functions. Panasonics mov are also know as znr, which stands for zincoxide nonlinear. Dc leakage current maximum current with rated dc voltage applied.
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