# how to read varistor code

Varistor Fire Safety Solutions specializes in a full range of services from the design, installation, and commissioning of fire protection systems, to testing and compliance in accordance with the relevant Indian legislation and building codes. Varistor Ordering code: B722(top right header bar) 25M ***M*** Series/Type: (bottom right header bar) MT25*** Preliminary data (optional): Department: PPD VAR PD Date: 20 -01 21 Version: b . For example, consider a varistor applied to protect the power terminals of electrical equipment. How to Read the Code. Stacking many varistors in a series as one varistor can increase the clamp voltage of a MOV. 7D471K - Varistor MOV for 220V AC. The V275LA20AP varistor is specified for up to 275 volts RMS and the data sheets ties this in nicely when multiplying 275 volts by approximately \$\sqrt2\$ to get 287 volts. A 6.8 kV varistor would certainly be an uncommon find. If the file has been modified from its original state, some details may not fully reflect the modified file. An electrical resistor can be defined as a basic component of electrical and electronics circuits. The most common varistor is a metal oxide varistor … But, you could get a device with the same marking that only draws 1 mA at a voltage of 473 volts (22% higher). This maybe difficult on small or oddly colored resistors. MOV is the most commonly used type of varistor. The varistor codes will add a great deal of convenience to you. Search Domain. Many varistors also have the voltage code prefaced by a size designation (in mm) such as 07, 10, 14, or 20. Varistors are manufactured from a non-homogeneous material, giving a rectifying action at the contact points of two particles. MOV’s are the most used component to protect heavy devices from transient voltages. The ability of the varistor to limit the transient voltage is sometimes expressed in terms of a clamp ratio. The resistance of a varistor is variable and depends on the voltage applied. Metal Oxide Varistor LS40K680QP LS40K680QPSIE SIEMENSOLB Epcos Metal Oxide from HAERF 565 at Heriot Watt University Dubai Electrical specifications and ordering codes Maximum ratings (TA = 85 °C) Ordering code Type SIOV-VRMS V VDC V imax (8/20 µs) A Wmax (2 ms) J Pmax W VRMS = 75 V B72240B0750K001 B40K75 75 100 25000 190 1.4 VRMS = 130 V B72232B0131K001 B32K130 130 … filed at Indian customs. Due to updated CSA standard, the marking will be changed on EPCOS varistors and labels that are produced from October 1, 2019. The word is composed of parts of the words “variable resistor”. MENU MENU Alibaba.com. English Sourcing Solutions Services & Membership Help & Community Ready to Ship Trade Shows Get the App Products. For example, 4R1 means a capacitance of 4.1pF. Related Searches for varistor codes: coding machinery qr code reader steam wallet code … Varistor Fire Safety Solutions specializes in a full range of services from the design, install and commissioning of fire protection systems, to testing and compliance in accordance with the relevant Indian legislation and building codes. Protect electronics against high voltage spikes and surges. Resistor SMD Code. A varistor is a device with a non-linear volt-ampere characteristic. Factory Leadtime for more quantity: 15 days Help. Metal Oxide Varistor – Basics. The 'B' component used here to earth the ground plane. A varistor is an electronic component with an electrical resistance that varies with the applied voltage. Call us at +91-11-40703001 for free sample of report. Now that you know how to read a resistor’s estimated values and potential values, let's take a look at how to check for a bad resistor. Explore more at Arrow.com If such a resistor is mounted with the marked side down, you cannot read its value unless you take it out of the circuit. Ready Stock: 927 nos. Product Code 4980 . Varistors are available for a broad range of specifications and are classified by maximum voltage, clamp voltage, peak current, surge energy and response time. Also known as a voltage-dependent resistor (VDR), it has a nonlinear, non-ohmic current–voltage characteristic that is similar to that of a diode. Therefore, new resistor SMD codes were developed. Available We dispatch same day if ordered by 1PM (excluding holidays), then courier usually takes 2-5 days. When its value changes it then changes the amount of electricity it drops. Real Time Availability. Just a note to let you know. 2 11/07 Please read Cautions and warnings and Important notes at the end of this document. SIOV metal oxide varistors Leaded varistors, StandarD series Series/Type: S05, S07, S10, S14, S20 Date: December 2007. A varistor is a "variable resistor". Many series and parallel connections determine the voltage rating and the current capability of the varistor. If your code includes a letter as one of the first two characters, there are three possibilities: If the letter is an R, replace it with a decimal point to get the capacitance in pF. Feb 13, 2013 #1 The 'A' component used instead of two parallel zenere diode. Read more Read less Some such codes would make the conclusion obvious. This behavior makes them suitable to protect circuits during voltage surges. Calculation examples Please read Important notes Page 2 of 7 and Cautions and warnings. varistor initially with the value of the operating current (here 1 A), then decaying towards zero fol-lowing an exponential function. Find out most authentic and trusted Varistor export data & price based on shipping bill no. This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. Varistors, also called metal-oxide varistors (MOVs), are used to protect sensitive circuits from a variety of overvoltage conditions. In case of excessive voltage increases, their resistance drops dramatically. We are utilizing our experience, innovation, and technology to serve the best to our customers. In order to illustrate the three distinct regions of operation over a wide range of current, a log–log format is used. China Metal Oxide Varistor varistor 14D560 14D560KJ 560KD14 560KD14J is supplied by Metal Oxide Varistor varistor manufacturers, producers, suppliers on Global Sources Look at the contact points of two particles these types of varistors from! Varistor Export Data > France > 85 free sample of report chart below for exact values ) can the... The clamp voltage of a MOV resistor ” and which is the value of it wait... Home > >. Offers at Alibaba.com and redefine your entertainment experience and determine its color this and which is the of! 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