. (Taping code is to be added at the end of model number.) The maximum energy within the varistor voltage change of ±10% when one impulse of 10/1000μs or 2ms is applied. You can use Varistors V350K14 or V350K20 these have approximately the same current and Vrms parameter. The Resistor Colour Code system is all well and good but we need to understand how to apply it in order to get the correct value of the resistor. When the above information is available, these charts offer basic application guidelines: Basics What is a Littelfuse MOV? Withstanding Surge Current The maximum current within the varistor voltage change of ±10% with the standard impulse current (8/20μs) applied one time. ... Varistor–non-linear component where resistance changes with applied voltage. 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.In contrast to a diode however, it has the same characteristic for both directions of traversing current. Metal Oxide Varistors (MOV) Part Number Cross Reference Guide 5mm Series Tel/Fax: +86 (0)769 82827329 Skype: topdiode Email: info@topdiode.com Website: www.topdiode.com. Topdiode VAR Series MAIDA Littelfuse/Harris PANASONIC(ZNR) Epcos(SIOV) 18. An MOV is a Metal Oxide Varistor. A varistor is an electronic component with an electrical resistance that varies with the applied voltage. Right click for a higher-definition view. Then the 4 = 1 st digit, the 7 = 2 nd digit, the 3 is the multiplier in pico-Farads, pF and the letter J is the tolerance and this translates to: 47pF * 1,000 (3 zero’s) = 47,000 pF, 47nF or 0.047uF the J indicates a tolerance of +/- 5%. The capacitor on the left is of a ceramic disc type capacitor that has the code 473J printed onto its body. Varistor Voltage Temp. The 4-digit code is used for marking precision surface mount resistors. Metal-oxide varistors (MOVs) are available in a variety of form factors and sizes for a broad range of applications. I have no more idea about this type of diode. Multilayer Varistors Metal-Oxide Varistors (MOVs) Radial Lead Varistors > LA Varistor Series Part Number Branding Model Size Disc Dia. 07D180K: D73ZOV110RA01: V18ZA1 ERZV07D180: S07K11 22; 07D220K D73ZOV140RA01; The starting material may differ in the composition of the additive oxides, in order to cover the voltage range of product. Diode T25-4-D9 is a high Current Rectifier known as Press-fit Rectifier Diode. It's similar to the previous system, the only difference is the number of significant digits: the first three numbers will tell us the significant digits, and the fourth will be the multiplier, indicating the power of ten to which the three significant digits must be multiplied (or how many zeros to add). The process of fabricating a Littelfuse Varistor is illustrated in the ﬂow chart of Figure 7. Varistors are voltage dependent, nonlinear devices which have an electrical behavior similar to back-to-back Zener diodes. The “left-hand” or the most significant coloured band is the band which is nearest to a connecting lead with the colour coded bands being read from left-to-right as follows: Feel free to make use of our favorite Resistor Color Code Guide, available below. Please check on google You can try PF7004, MP352, MP502, PF7000, BYP60A6 The 4-digit code. Taping Code Tolerance of Nominal Varistor Voltage K = ±10% Nominal Varistor Voltage (Example. 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