One end of the resistor is one color, the body is another color and there is a color dot on the body. The tables on this page illustrate three common forms for four, five and six band resistors. In the case of 5 band and 6 band resistors the first three bands indicate the significant digits and the fourth band indicates the multiplier. For example, the code 04 means 107 ohms, and 60 means 412 ohms.
Some resistors use colored bands instead of numbers. That means, that the resistor has between 225,400 and 234,600 ohms. Brown corresponds to the value 1 in the color chart. Resistor color code calculator and chart 4band, 5band or 6. Surface mount resistors land pattern an example of a land pattern for chip resistor array, antisulfurated chip resistor array and chip attenuator is. Resistor values are marked with small colored stripes. The surface mount resistor code systems provide are mainly used to enable service, repair and faultfinding.
Code to add this calci to your website just copy and paste the below code to your webpage where you want to display this calculator. Standard smd resistors are marked with a threedigit code, in which the first two digits represent the first two numbers of the resistance value with the third digit. Resistor color code calculator 3, 4 and 5 band resistors. Are you having trouble reading resistor color codes. Imagine how many blind technicians there would be otherwise. Select the first 3 or 4 bands for 20%, 10% or 5% resistors and all 5 bands for precision 2% or less, 5band resistors. In the table below the values for each code is given, which are basically the values from the e96 series. Color coded resistance calculator 4band resistor code calculator, color to value, calculate resistor values from color codes. An electronic color code is used to indicate the values or ratings of electronic components, usually for resistors, but also for capacitors, inductors, diodes and others. Three 3 band resistor resistance color code calculator. If your answer is yes, then this tool is specifically designed for you. A separate code, the 25pair color code, is used to identify wires in some telecommunications cables. The usage of a letter prevents the confusion with other marking systems. As higher tolerance resistors are used, further figures are needed.
You can use the calculator below to calculate the resistance of an smd resistor. This javascriptbased web app comes from my javascript bible books dating back to the very first edition with a few upgrades a long time ago. The resistor color code calculator decodes and identifies a value and tolerance of 4 band wire wound resistors. Thus, the ratio of the voltage applied across a resistors. Resistor colour codes four band resistor colour code the colour codes used on resistors in carbon, carbon film and metal film types are widely used and a must learn for electronics engineers. Resistor color codes color codes electronics textbook.
Method of finding the valuemeaning of codes of capacitor. In the four band resistor colour code illustrated in. Resistor color code for 4 and 5 band resistors leon audio. How to read capacitor code value ceramic capacitor code.
The calculator above will display the value, the tolerance and performs a simple check to verify if the calculated resistance matches one of the eia standard values. Graphical resistor calculator 4 band color to value kleurcode kleur naar waarde, tot 6 ringen, in dutch. Most resistors have four color bands, while some have five bands. Smd magnetics packaging methods tape and reel in inches millimeters meets eia rs481 tape and reel packaging standard model package code reel size carrier tape. When decoding the resistor colour bands, consult a resistor colour code table like the one above. This tool is used to decode information for color banded axial lead resistors.
A further surface mount resistor code scheme or smd resistor coding scheme has started to be used, and it is aimed at 1% tolerance smd resistors, i. Try out our resistor color code calculator in our tools section. Products resistor color code calculator tool resistor color code calculator sales, authorized distributors technical questions. Melf and leaded resistor products e96 series and e192 series. And the 4th band tells you the tolerance of the resistor. Weve created a simple chart to explain resistor color coding for you. A preferred resistor value chart for laminating back to back with the color code chart. Select the number of bands, then their colors to determine the value and tolerance of the resistors or view all resistors digikey has to offer. Different codes are used for wire leads on devices such as transformers. Gold means the resistor is within 5% of being deadon accurate. C, but an industrial 55 size resistor would be rated at 14 watt up to 125.
Smd resistor codes smt surface mount markings values. Resistor marking codes page 2 of 2 marking codes used on welwyn chip resistors where space allows, chip resistors are marked with value in 3 or 4 characters. To use this tool, simply click on a particular color and number and watch how the. For example 472 4700 ohms 4k7, 31 30 ohms 1k33, 330 33 ohms 33r n. The body color is the first digit corresponding to band a on a modern resistor. Explains how to find resistance values and tolerances for 3, 4, 5 and 6 band resistors. Our resistor color code calculator is a handy tool for reading carboncomposition resistors whether its a 4band, 5band or 6band type. To determine the exact range that the resistor may be, take the value of the resistor and mutiply it by 5,10, 0r 20%.
Although i have removed other book examples from this web site, this page remains the most popular destination within presumably as a resource for students. Nov 23, 2012 this chart shows you how you can read the resistor color bands. Click here for resistor colour code and smd resistor code. Let us consider the color code for the resistor with the bands brownblackredgold.
The first two stripes represent numeric values and the third stripe is a multiplier. Resistor color code chart the chart below shows how to determine the resistance and tolerance for resistors. Details of the colour code system can be found here in the technical data section. Since resistors restrict the flow of electricity, friction causes heat to build up heat inside the component. Suitable for printing on an inkjet in pdf file format page 2 has 4 charts to the page. The chart below figure 1 shows the color codes and their respective values depending on which band they fall on. C, but an industrial 60 size resistor would be rated at 12 watt up to 125. Therefore an smd resistor with the figures 472 would have a resistance of 47 x 10 2 ohms, or 4. The multiplying factor gives the final value of the resistor, for example.
Resistor colour code calculator this calculator converts resistor values to or from 5band or 4band colour codes. Calculating the three 3 band resistor resistance color codes is made easier with this online electrical calculator. The tolerance of a resistor may also be represented by a gold or silver band. Surface mount resistors are printed with either a 3 or 4digit numerical code which is similar to that used on the more common axial type resistors to denote their resistive value. An electronic color code is used to indicate the values or ratings of electronic components.
These tiny chips are marked with three 3 or four 4 digit codes which is called smd resistor codes to indicate their resistance values. The end color is the second digit, band b and the dot is the multiplier band c. Originally only meant to be used for fixed resistors, the color code was extended to also cover. The resistor needs to be large enough to dissipate the heat into the surrounding area without changing its own value beyong the tolarance allowed. The first two numbers describe the value of the capacitor and the third number is the number of zeros in the multiplier. The table can also be used to specify the color of the bands when the values are known. Select the resistor type 4 or 5 bands using the radio buttons. Resistor colour codes arcol uk limited, threemilestone ind. The fourth stripe gives you the resistors tolerance that is, it tells you how close to the indicated value you can expect the resistance to actually be. An automatic resistor calculator can be used to quickly find the resistor values.
Graphical resistor calculator 4 band color to value related topics. Ceramic disc capacitors have two to three digits code printed on them. To manufacture resistors of every possible value would be impractical. Understanding resistors when reading 4 band resistor code, you take the first 2 bands at face value. Smd resistors have a code consisting of three or four number or letters. Identifying the manufacturers type number of an smd device from the package code can be a diffi cult task, involving combing through many different databooks. In rn, rnc, and other mil spec resistors sharing the sizing number code, a 55 size resistor is rated at 18 watt at 70. Instead resistors are made in a restricted range of values and each value is quoted as a specific number of ohms plus or minus a percentage of the quoted value, this range of possible values is called the tolerance of the resistor.
Silver being within 10% and no color band being within 20%. The colors brown, red, green, blue, and violet are used as tolerance codes on 5band resistors only. Decoding resistor markings decoding the colour bands. Components and wires are coded with colors to identify their value and function. The coding is 2 or 3 digits followed by one multiplier expressing the number of zeros. The current through a resistor is in direct proportion to the voltage across the resistors terminals. During manufacture the resistors are held either in tapes that are reeled, or in hoppers used for the surface. Resistor color coding system applies to carbon film resistors, metal oxide film resistors, fusible resistors, precision metal film resistors, and wirewound resistors. In the case of a 3 or 4 band resistor, the first two band indicate the significant digits and the third indicates the multiplier.
We have presented 3 charts below which are exactly resistor color code charts for 4 band, 5 band and 6 band resistors respectively. Smd magnetics packaging methods vishay intertechnology. The 3rd band tells you how many zeros to add to the end. Tolerance means how close the component will likely be to its intended value. This is not 100 ohms, but it follows the scheme exactly and it is 10 x 10 0 or 10 x 1 10 three figure smd resistor marking code. What does the resistor color codes on your resistor mean.
Smd resistor stands for surface mount device taken out from smt surface mount technology resistor. Resistor color code chart how to identify resistance color. Click here to download the resistor color codes pdf the resistor color. Resistors are available in many different values, shapes, and physical sizes. If there is no tolerance band, then find the side that has. Techo notes fixed resistors a fixed resistor is a passive twoterminal electrical component that implements electrical resistance as a circuit element. Likewise, a mil spec 60 size resistor would be rated at 14 watt at 70. For the first two bands, find that colours corresponding digit value. That is the number that the resistor may go either way. Dec 01, 2019 for instance, if you have a 4band resistor, and the colors are red, orange, yellow and red, then you have a resistor with a value of 230,000 with a tolerance, or accuracy, of plus or minus 2%. Reading the resistor color code is easy with a little practice. However the small size of smt resistors makes the figures difficult to read. To determine the value of a given resistor look for the gold or silver tolerance band and rotate the resistor as in the photo above.
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