Construction round varistor element, leaded coating. When a higher voltage appears, the varistor s structure is laid on the connectors so that the electric current finds the outlet. A varistorvoltage dependent resistor vdr is a component which has a voltage current characteristics that is very much similar to that of a diode. Metal oxide varistors mov part number cross reference guide 5mm series telfax. Professional puppet patterns puppet building tutorials and materials puppet by pam groom made with the rotondo puppet pattern introduction to diplomacy pdf free rotondo puppet pattern pdf free marketing agropecuario carlos molinari pdf free varistor s20 k250 pdf free. K275 k250 varistor varistor k140 varistor k420 varistor k250 k150 varistor k275 epcos varistor k varistor k275. In systems with high exposure to transients industrial, mountain locations block varistors are to be preferred. Mov metal oxide varistors standard s20k250 epcos trim leads. Epcos tdk s20k250 are available at mouser electronics. Browse a selection of varistors, including the metal oxide varistor, today. Varistors and surge voltage protectors metal oxide varistors stock no. Multiple pulse mp disk varistors, s20 multiple pulse important information.
This type of structure utilises a diode characteristic to provide the variable resistance. S20k250 pdf, s20k250 description, s20k250 datasheets. Our website uses cookies to provide you with the best. S20k230 varistor 230vrms 20mm radial epcos inc datasheet pdf. To find the varistor that meets your needs, start with littelfuse. For example, a potentiometer is a metal oxide varistor that provides protection against potential power surges and excessive voltage. Varistor or voltage dependent resistor vdr resistor guide.
This transient voltage is clamped to a safe level and the energy in the transient is dissipated in the varistor. Leaded varistors epcos data sheets, parameter search, key technical data, general information. Siov metal oxide varistors data book 2008 schmidmultitech sro. Varistors are produced using zinc oxide as a conductor mixed with oxides of various metals often bismuth which are characterised by much higher resistance. K250 varistor siemens s18k250 k250 varistor b25k250 varistor varistor k250 s18 metal varistor siemens varistor family airbag text. Device ratings and specifications continued v250la2 7 2502 250 330 21 1200 354 473 730.
Circuit protection from transient voltage by varistor. A varistor voltage dependent resistor vdr is a component which has a voltage current characteristics that is very much similar to that of a. S20 k275 varistor datasheet, cross reference, circuit and application notes in pdf format. They are incorporated into the circuit in such a way that when activated they will take over the current created by the high voltage away from the sensitive components. This component is used to protect electrical devices from high transient voltages. In many ways the varistor looks similar in size and design to a capacitor and is often confused as being one. Metal oxide varistors mov part number cross reference. For ordering information see page 206 ff, chapter leaded varistors. We use cookies to personalise content and ads, to provide social media features and to analyse our traffic.
When a higher transient voltage appears across the varistor, its resistance sharply decreases to a low value. S20k230 varistor 230vrms 20mm radial epcos inc datasheet pdf data sheet free from datasheet data sheet search for integrated circuits ic, semiconductors and. Block varistors construction diskshaped varistor element, potted in plastic housing housing flameretardant to ul 94 v0 screw terminals m4 siovb32 40 screw terminals m5 siovb60 80 features heavyduty varistors surge current capability up to 100 ka wide product range siovb40 also available without housing ls40 series. Epcos, alldatasheet, datasheet, datasheet search site for electronic. Mov metal oxide varistor s20k250 epcos west florida components. These statements are based on our knowledge of typical requirements that are often placed on our products. Varistor 250vrms 20mm radial online from elcodis, view and download s20k250 pdf datasheet, tvs varistors, movs specifications. S20k230 varistor 230vrms 20mm radial epcos inc datasheet pdf data sheet free from datasheet data sheet search for integrated circuits ic, semiconductors and other electronic components such as resistors, capacitors, transistors and diodes. S20k230 varistor 230vrms 20mm radial epcos inc datasheet. Vdrs series vdr metal oxide varistors standard vishay.
Varistors transfer multisort elektronik electronic components. Zno ceramic material with two solid copper leads s20 types only or copper clad steel wire. Free tools for electronics designers, eagle libraries. This voltage dependent resistor has an operating temperature of 40 to 85 c. Voltage protection devices from tdk electronics include varistors, ceradiodes, ctvs, ceramic transient voltage suppressors, multilayer and smd varistors for automotive applications, for industrial applications, for applications in mobile phones, portable devices, multilayer and smd varistors for telecom applications, monolithic and leaded varistors, thermofuse varistors, shcv varistors, 2. S20k250 varistor 250vrms 20mm radial epcos inc datasheet pdf data sheet free from datasheet data sheet search for integrated circuits ic, semiconductors and. Siov, leaded varistors, standard series, s05, s07, s10, s14 and s20. These ul recognized varistors require very little mounting space, and are offered in various standard lead form options.
We dont share your credit card details with thirdparty sellers, and we dont sell your information to others. K460, s10s14 k11 k680, s20 k11 k1100 iec delivery mode bulk standard, taped versions on reel or in ammo pack upon request. A varistor is also known as voltage dependent resistor or vdr and therefore varistors are considered a subset of the variable resistor component segment. They have been intensively used in high power, high voltage applications. S20k250 datasheet, s20k250 datasheets, s20k250 pdf, s20k250 circuit. 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. General technical data climatic category operating temperature storage temperature electric strength insulation resistance response time to iec 600681 to cecc 000 to cecc 000 to cecc c kvrms m ns. K275 k250 varistor varistor k140 varistor k420 varistor k250 k150 varistor k275 epcos. When the circuit is exposed to a high voltage transient, the varistor starts to conduct and clamps the transient voltage to a safe level. Varistors are voltage dependent resistors with symmetrical ui characteristic curve, the resistance values of which drop as the voltage increases, thus short circuiting any further build up of overvoltage. Nominal discharge current in according to ul 1449, 4th edition. Vdr metal oxide varistors standard additional resources ordering information the varistors are available in a number of packaging options. However, when the surge voltage exceeds the varistor voltage, the impedance across the varistor terminals decreases sharply. Commonly used to protect electronic circuits from surges.
As a result this form of device is often called a metal oxide varistor, or mov. The varistor is to be operated directly on the line, ission line. Leaded varistors, s20k250 datasheet, s20k250 circuit, s20k250 data sheet. Varistors can be considered to be a form of resistor in which the resistance changes significantly with the applied voltage. A varistor is an electronic component that protects expensive devices from harmful power surges, much like a shock absorber.
S14k275 html datasheets, s14k275 pdf datasheet is 146 page, varistor 387v 4. Line voltage operation, radial lead datasheet catalog. Recent listings manufacturer directory get instant insight. A test current of 1 ma dc is typically used to determine. Oct 04, 2010 read about basic varistor operation and applications. Epcos leaded varistors,alldatasheet, datasheet, datasheet search site for electronic. Varistor s20 k datasheet, cross reference, circuit and application notes in pdf format. Ultramov 25s varistor series littelfuse ultramov 25s varistor series are designed for applications requiring high peak surge current ratings and highenergy absorption capability. Some parts of this publication contain statements about the suitability of our products for certain areas of application.
Siovs20k250 datasheet, cross reference, circuit and application notes in pdf format. Siov siov metal oxide varistors metal oxide va ristors 2008 published by epcos ag corporate center edition 112007 ordering no. Varistor s20 k50 datasheet, cross reference, circuit and application notes in pdf format. Nowadays the resistive body of a varistor is made from semiconductor material making it a type of semiconductor resistor with a nonohmic symmetrical voltage and current characteristics suitable for both ac and dc voltage applications. Our payment security system encrypts your information during transmission. The pictures of products are only demonstrative and may be different than the real look of products. Metal oxide varistor mov, basics, working, specifications. Metal oxide varistors definition of varistor terms rated rms voltage, rated dc voltage the maximum designated values of power system voltage that may be applied continuously between the terminals of a device varistor voltage test characteristic that is used to classify varistors. The varistor is bidirectional and is based around a ceramic or metal oxide. We also share information about your use of our site with our social media. Metal oxide varistor technology, types and configurations. 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.
Epcos tdk s20k varistors are available at mouser electronics. Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without epcos prior. A varistor is an electronic component with a significant nonohmic currentvoltage characteristic. For further details refer to chapter taping, packaging and lead configuration for leaded varistors. Mov metal oxide varistor s20k250 epcos west florida. Metal oxide varistors definition of varistor terms rated rms voltage, rated dc voltage the maximum designated values of power system voltage that may be applied continuously between the terminals of a device varistor voltage test characteristic that is used to classify varistors by type. Siov s20k250 datasheet, cross reference, circuit and application notes in pdf format. However, when the surge voltage exceeds the varistor voltage, the impedance across the varistor.
Cross reference guide is for reference only, and please refer to our pdf specification. If only a single diode is used, then it only acts in one direction, but back to. This devices clamping current is 100 a and clamping voltage is 650 v. The most common type of varistor utilise a metal oxide and hence they are often known as metal oxide varistors. S14k275 datasheet pdf download 146 page epcos, inc. Epcos, alldatasheet, datasheet, datasheet search site for electronic components and. Sm20 series 20 mm smd varistors the littelfuse sm20 series is a surfacemount metal oxide varistor for applications requiring high energytransient current capability. 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. Varistors are voltage dependent resistors with symmetrical ui characteristic curve, the resistance values of which drop as the voltage increases, thus short. The energy of the incoming surge is partially conducted and partially absorbed, protecting the circuit.
Varistors arresters voltage protection tdk electronics. Varistor resistance is a nonlinear inverse function of the applied voltage. For example if there is a power surge, the varistor, normally having. A surge in excess of the specified withstanding surge current may cause short circuits or package rupture with expulsion of material.
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