But I've found one thanks to you! It may very well be a lot number for the manufacturers reference. Use our suite of tools to help select, analyze and compare inductors, View our list of inductors and filter results based on your exact parameters, Looking for a datasheet? Inductor value = 47x10^0uH = 47uH 2.1. 1st band: yellow=4 1.2. Bands 2 and 3 represent basic value, and band 4 gives the number of zeros. (To get better failure rates, resistors are typically specified to have twice the needed wattage dissipation that the circuit produces) 1% resistors have three bands to read digits to the left of the multiplier. The color codes for inductors are identical to that of a resistor so if you are familiar with resistors this should be very easy Im not sure what the 1612 is. Bands 2, 3 and 4 indicate the value of inductance in µH. 2 years ago, Are you sure you read unto us those bands in the right order?A wide silver band as the first band, means ignore that band, because it just means, "military", whatever that means.A narrow silver band as the first band, I think means you are reading it backwards; i.e. In such cases, The silver dot indicating a Military (Mil) specification will be larger than the other dots and will be placed a the beginning of the dot sequence. The first two dots indicate the significant digits of the inductance value, and the third dot indicates the multiplier. Question (Tolerance band to the right-- refer to the tolerance chart below for exact values.). Generally these are coded according to the top colored dot on the surface. Electronics / Inductor / Inductor color code. To convert from value to colours: Type the inductance in the box below and select the units and (optionally) the tolerance from the drop-down boxes.        1                     3                   X10           +/-20% Write this number down. http://www.vikingamerica.com/ftp/NL.pdf, © 2007− 2020 Eric Coates MA BSc. Inductor color code . ?And what is the power of it? Did you make this project? For inductors of a very small physical size, coloured dots may be used instead of bands. The bands of the military grade example at the bottom of the diagram are all mixed up. They would mean the inductor has a value of: 3rd band: black=10^0=1 2. It should be BLUE-GREY-GOLD-SILVER instead of BLUE-GOLD-GREY-SILVER. Yellow  Violet  Red = 4700 nH. The colour bands will be displayed below on the image of the inductor. Learn more about magnetics, request free samples or ask our engineers a question. 0603 (except 0603CT), 0805 (except 0805HP), and some 1008 parts are marked with a single color dot. I can see how that would mix things up.BTW, I found some other links which, explain the same thing, as explained in this instructable, here:https://www.electronicshub.org/inductor-color-code/https://www.elliottelectronicsupply.com/inductor. The 6R8 is the marking for the value. About: Electrical Engineer, control systems, automation, small electronics, home automation, microcontrollers etc. Dots 1 and 2 indicate the inductance in nanoHenries. Cylindrical molded choke coils are marked with five colored bands. This maybe difficult on small or oddly colored resistors. Can any one help me out please. In such cases, The silver dot indicating a Military (Mil) specification will be larger than the other dots and will be placed a the beginning of the dot sequence. In some cases only a single coloured dot is used,and for their meaning it is neccesary to refer to individual manufacturers data for accurate interpretation. 3 years ago, Can you post a picture of the inductor with the markings?BR. To convert from colours to value: 3.6mH?? The inductance value  represented by the dot is shown on the data page for each series The dot is for identification only, may be at one end of the part or in the middle, and does not indicate polarity. Inductance values are indicated with color code as shown below (hover over green dots for information) 2 years ago =D, 7 years ago The table below shows the significance of each color. All rights reserved. Dot code examples from Coilcraft Inc. http://www.coilcraft.com/colrcode.cfm, Dot code examples from Viking Tech Corporation. A gold band might be used in either band 2 or band 3. The other bands are the numbers Example : 2 2 x 1,000. • Be able to calculate the value of colour coded inductors. Does it mean the last band (or the first if reading it backwards) band could be red OR brown?Also, white does not make sense as a multiplier, because 10^9 is 1 000 000 000, it gives an inductor value in kilohenries, since (10^9)*(10^-6) = 10^3, and that is just crazy big.I dunno. Now look at the chart and match the "1st & 2nd color band" color to the "Digit it represents". on Introduction, To determine the value of a given resistor look for the gold or silver tolerance band and rotate the resistor as in the photo on the left. 0603, 0805 and 1008 Series Other parts are marked with three color dots. So 6R8 = 6.8 uH. Or maybe it is the colors. Like what does that mean? that band is actually the tolerance band, specifically, silver means: +or- 10%Black as 1st band does not make sense, because I don't think they ever put a leading zero in those two significant figures; e.g. Read the number as the '% Failure rate per 1000 hour' This is rated assuming full wattage being applied to the resistors. Band 5 indicates the tolerance between 1% and 20%. There are generally three dots that are read clockwise from the top. Gray  Red  Black = 82 nH http://www.resistorguide.com/resistor-color-code/. Pretty straight forward, you can find some online interactive tutorials for practice, but you should pick it up pretty quickly Get free samples quickly - most orders ship the same day! What way do you read the colours if silver black white red/brown?Apologies if I missed this. Band colors: 1.1. The last band is the tolerance, and the band right before that is the multiplier. Molded & Coated Inductor Color Coding. Calculator Four bands Five bands First break down the bands. The inductance value represented by the dot is shown on the data page for each series The dot is for identification only, may be at one end of the part or in the middle, and does not indicate polarity. Each color represents a value. The inductance value represented by the dot is shown on the data sheet for the series. Some 1008 parts are marked with one dot. For inductors of a very small physical size, coloured dots may be used instead of bands. Photo Credit : chipbook.com, Participated in the Electronics Tips and Tricks. [black][white] = 09 = 9Also I am wondering why your list of color bands has a "/" between red and brown? Surface Mount Device(SMD) or Chip Inductor Codes. note: brown and violet can look very similar on some components. Wirewound Ferrite Bead Finder and Analyzer. The next three bands indicate the inductance in micro-henries and the fourth band is … Search by product and download a PDF. Answer On these parts, the third dot is not a multiplier. Smaller inductors use numbers instead of colors, You can find more about these here. Search by product and download a PDF, XAL7050 High-inductance Shielded Power Inductors. In either of these two bands, gold indicates a decimal point and band 4 is used as a digit instead of a multiplier band. Inductors can have four or five bands. Surface Mount Device (SMD) or Chip Inductor Codes. meaning out inductance is 130 micro Henrys with a 20 percent tolerance, or in other words, our actual inductance can be anywhere between 104 and 156 micro Henrys. Now look at the 2nd color band and match that color to the same chart. the tricky part is remembering the results from this will be in microHenrys, not just Henrys Reply (Revision 14.01 18th July 2020). (Hons) Dot 3 indicates the number of zeroes to be added. BROWN   -   ORANGE   -   BROWN   -   BLACK To pull it all together now, simply multiply the first 2 numbers (1st number in the tens column and 2nd in the ones column) by the Multiplier. Share it with us! The military standard for cylindrical inductors specifies 5 coloured bands This is the number you will multiply the other 2 numbers by. Match the 3rd color band with the chart under multiplier. Looking for a datasheet? The dot is for identification only and does not indicate polarity. 5 years ago The inductor value is decoded according to the color-coding of the 4-band system. Like perhaps if what they intended to print as "brown"=1 looks like "black"=0 to your eyes. The same colours are used as in the EIA 4 band code, but: For band 1, a double width sliver band is used to signify Military Standard. Inductor Colour Code Calculator This calculator converts colour codes to inductor values. I am hopeful you can decode it once you get the get the bands in the right order. Write it next to the other 2 numbers with a multiplication sign before it. The value of inductance is obtained in Nano Henry. Yes, it is next to the wire tie, 6R8/1612. When no gold band is present in bands 2 or 3, band 4 is a multipier band. They have a different temperature coefficient in order to provide the 1% tolerance. on Introduction, Thanks a million! OPA Based Alice Microphones: a Cardioid and a Figure 8, DIY Raspberry Pi Desktop Case With Stats Display, https://www.electronicshub.org/inductor-color-code/, https://www.elliottelectronicsupply.com/inductor. Look at the 1st color band and determine its color.

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