Let us consider the color code for the resistor with the bands brownblackredgold. For example, the code 04 means 107 ohms, and 60 means 412 ohms. Graphical resistor calculator 4 band color to value kleurcode kleur naar waarde, tot 6 ringen, in dutch. What does the resistor color codes on your resistor mean. The tables on this page illustrate three common forms for four, five and six band resistors. Resistor values are marked with small colored stripes. 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. The tolerance of a resistor may also be represented by a gold or silver band. 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. Try out our resistor color code calculator in our tools section.
Techo notes fixed resistors a fixed resistor is a passive twoterminal electrical component that implements electrical resistance as a circuit element. Resistor color code calculator and chart 4band, 5band or 6. Suitable for printing on an inkjet in pdf file format page 2 has 4 charts to the page. When decoding the resistor colour bands, consult a resistor colour code table like the one above. 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 table can also be used to specify the color of the bands when the values are known.
Imagine how many blind technicians there would be otherwise. Are you having trouble reading resistor color codes. The coding is 2 or 3 digits followed by one multiplier expressing the number of zeros. And the 4th band tells you the tolerance of the resistor. 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. The current through a resistor is in direct proportion to the voltage across the resistors terminals. The body color is the first digit corresponding to band a on a modern resistor. The colors brown, red, green, blue, and violet are used as tolerance codes on 5band resistors only. This tool is used to decode information for color banded axial lead resistors.
A separate code, the 25pair color code, is used to identify wires in some telecommunications cables. Thus, the ratio of the voltage applied across a resistors. The resistor needs to be large enough to dissipate the heat into the surrounding area without changing its own value beyong the tolarance allowed. Weve created a simple chart to explain resistor color coding for you.
Resistor color codes color codes electronics textbook. How to read capacitor code value ceramic capacitor code. 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. An automatic resistor calculator can be used to quickly find the resistor values. If there is no tolerance band, then find the side that has. Silver being within 10% and no color band being within 20%. 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%. Details of the colour code system can be found here in the technical data section. Three 3 band resistor resistance color code calculator. The surface mount resistor code systems provide are mainly used to enable service, repair and faultfinding. To manufacture resistors of every possible value would be impractical.
The chart below figure 1 shows the color codes and their respective values depending on which band they fall on. 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. That is the number that the resistor may go either way. These tiny chips are marked with three 3 or four 4 digit codes which is called smd resistor codes to indicate their resistance values. Understanding resistors when reading 4 band resistor code, you take the first 2 bands at face value. The first two stripes represent numeric values and the third stripe is a multiplier. Gold means the resistor is within 5% of being deadon accurate. Ceramic disc capacitors have two to three digits code printed on them.
We have presented 3 charts below which are exactly resistor color code charts for 4 band, 5 band and 6 band resistors respectively. Melf and leaded resistor products e96 series and e192 series. However the small size of smt resistors makes the figures difficult to read. That means, that the resistor has between 225,400 and 234,600 ohms. In the table below the values for each code is given, which are basically the values from the e96 series. In the four band resistor colour code illustrated in.
Resistor colour code calculator this calculator converts resistor values to or from 5band or 4band colour codes. For example 472 4700 ohms 4k7, 31 30 ohms 1k33, 330 33 ohms 33r n. During manufacture the resistors are held either in tapes that are reeled, or in hoppers used for the surface. Smd resistor stands for surface mount device taken out from smt surface mount technology resistor. In the case of a 3 or 4 band resistor, the first two band indicate the significant digits and the third indicates the multiplier. Nov 23, 2012 this chart shows you how you can read the resistor color bands. The first two numbers describe the value of the capacitor and the third number is the number of zeros in the multiplier. The end color is the second digit, band b and the dot is the multiplier band c. 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. 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. 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. Resistor color code chart the chart below shows how to determine the resistance and tolerance for resistors. Calculating the three 3 band resistor resistance color codes is made easier with this online electrical 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. Surface mount resistors land pattern an example of a land pattern for chip resistor array, antisulfurated chip resistor array and chip attenuator is. Therefore an smd resistor with the figures 472 would have a resistance of 47 x 10 2 ohms, or 4. Smd resistors have a code consisting of three or four number or letters. 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. 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. Select the first 3 or 4 bands for 20%, 10% or 5% resistors and all 5 bands for precision 2% or less, 5band resistors. To determine the exact range that the resistor may be, take the value of the resistor and mutiply it by 5,10, 0r 20%. Since resistors restrict the flow of electricity, friction causes heat to build up heat inside the component. Color coded resistance calculator 4band resistor code calculator, color to value, calculate resistor values from color codes. Resistors are available in many different values, shapes, and physical sizes. As higher tolerance resistors are used, further figures are needed. Smd magnetics packaging methods vishay intertechnology. Components and wires are coded with colors to identify their value and function.
Tolerance means how close the component will likely be to its intended value. Explains how to find resistance values and tolerances for 3, 4, 5 and 6 band resistors. For the first two bands, find that colours corresponding digit value. 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. In rn, rnc, and other mil spec resistors sharing the sizing number code, a 55 size resistor is rated at 18 watt at 70. The multiplying factor gives the final value of the resistor, for example. Likewise, a mil spec 60 size resistor would be rated at 14 watt at 70. Originally only meant to be used for fixed resistors, the color code was extended to also cover. Different codes are used for wire leads on devices such as transformers. Resistor color code for 4 and 5 band resistors leon audio. You can use the calculator below to calculate the resistance of an smd resistor. C, but an industrial 55 size resistor would be rated at 14 watt up to 125. 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. The 3rd band tells you how many zeros to add to the end.
A preferred resistor value chart for laminating back to back with the color code chart. Graphical resistor calculator 4 band color to value related topics. Resistor color code calculator 3, 4 and 5 band resistors. 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. Most resistors have four color bands, while some have five bands.
Resistor colour codes arcol uk limited, threemilestone ind. Our resistor color code calculator is a handy tool for reading carboncomposition resistors whether its a 4band, 5band or 6band type. Products resistor color code calculator tool resistor color code calculator sales, authorized distributors technical questions. Select the resistor type 4 or 5 bands using the radio buttons. The resistor color code calculator decodes and identifies a value and tolerance of 4 band wire wound resistors. To use this tool, simply click on a particular color and number and watch how the. Resistor color coding system applies to carbon film resistors, metal oxide film resistors, fusible resistors, precision metal film resistors, and wirewound resistors. Smd resistor codes smt surface mount markings values.
Brown corresponds to the value 1 in the color chart. C, but an industrial 60 size resistor would be rated at 12 watt up to 125. Resistor color code chart how to identify resistance color. 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. The usage of a letter prevents the confusion with other marking systems. Reading the resistor color code is easy with a little practice. Click here for resistor colour code and smd resistor code. If your answer is yes, then this tool is specifically designed for you.
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