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. An important cognitive skill is the ability to detect and apply patterns in sets of data. This is an international and universally accepted method, developed many years ago as a simple and quick way of identifying a resistors ohmic value no matter what its size or condition. Resistor color code chart understanding resistance color coding. Jan 05, 2018 how to read colour code of resistor, smd resistor coderesistor color code. Color coding is standardized by the electronic industries association eia. This standard describes the marking codes for resistors and capacitors. Resistor color code chart how to identify resistance.
The tables on this page illustrate three common forms for four, five and six band resistors. They are given by several bands and together they specify the resistance value, the tolerance rate and sometimes the reliability or failure rates. Find the value and tolerance of a 4band, 5band, or 6band resistor with our resistor colour code calculator or download our colour code pdf for reference. Better buy resistors or your grid bias voltages go west better be right or your great big venture goes west. Resistor colour code and resistor tolerances explained. However the smaller resistors like those most commonly encountered are colour coded. There are several bands to specify the value of resistance. How to read color codes from resistors the value of the resistor is marked on the body using colors. Although this is easy to memorize, it didnt make it easy to remember a color. The normal way to teach students the resistor color code is to show them the code first, then show them some resistors.
Pdf realtime resistor color code recognition using. Resistor color coding carbon resistors are small, so their r value in ohms is marked using a color coding system. Blue 6, grey 8, black 0, orange 3, gold 5% the color code value of the above resistor is 68. Check out all about circuits resistor color code calculator, a handy tool for reading resistor color code values. Generally, the resistance value, tolerance, and wattage rating are printed on the body of a resistor as numbers or letters when the resistors body is big. This convenient index was created by radio manufactures association now part of electronic industries alliance in early 1920s. Resistor color code calculator and chart 4band, 5band. Resistor color code chart handout pdf teachengineering. Note that the color code system for capacitors is very similar to that of resistors except there is a fifth band representing the temperature coefficient.
The use of color bands on the body of a resistor is the most common system for indicating the value of a resistor. Resistor color codes color codes electronics textbook. Resistor color code system how to read the resistor code. The reason for this is that any numbers printed on the component would very easily be removed and they would not be easy to read. The bigger the value of a resistor the more it opposes the current flow. This tool is used to decode information for color banded axial lead resistors. Resistor color code is used to indicate the value of resistance. Resistor color code and types of resistors introduction to resistors. Carbon composition, carbon film, metal film, wire wound, metal oxide resistor. Resistor color code 4 band, 5 band and 6 band resistors. Weve created a simple chart to explain resistor color coding for you. Resistors come in a range of tolerances but the two most common are the e12 and the e24 series. Online electrical calculator to determine the resistance of three band resistors.
All resistors have three bands of colours, followed by a space and then a fourth band of colour. With practical examples of 4band, 5band and 6band resistors you will get a quick understanding. Kitronik ltd how to calculate and understand resistor values resistors a resistor is a device that opposes the flow of electrical current. Or there are much resistor calculators that you can use. Aug 22, 2018 almost all resistors pinned with a power rating of up to 1 watt are marked with color bands. Different types of resistors and its color code calculation in electronics resistors are the most commonly used components in electronic circuits and devices. 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. A resistor is identified by its pattern of color of bands. The first band is a one 1, the second band is a zero 0, and the multiplier band or third band is one time text to the third power or one thousand. View the resistors and based on the color bands determine its value. Our resistor color code calculator is a handy tool for reading carboncomposition resistors whether its a 4band, 5band or 6band type. Read resistor color laboratory 20112012 the first litter word to represent color resistor code in table 1 table 2 resistor tolerance view the resistors and based on the color bands determine its value. Practically all leaded resistors with a power rating up to one watt are marked with color bands. Use the resistor color code chart below to understand how to use the color code system.
Most of the resistors have colour bands grouped closer at one end. If first color is red,second is red,third is black and the last is silver it means. Every color is different number and you can remember these numbers or you can just use the table on next step. This band is the first one closest to one end of the capacitor. By using the color code chart, one finds that green stands for 5 and blue for 6. The value for the selected band is expressed in terms of ohms.
Apr 07, 2020 before using any resistor in the electrical circuit, you need to find out the resistance value of the resistor. Because carbon resistors are physically small, they are colorcoded to identify their resistance value in ohms. Resistor color code chart resistors are devices that limit current flow and provide a voltage drop in electrical circuits. The use of color bands on the body of a resistor is. In the four band resistor colour code illustrated in. Resistor color coding system applies to carbon film resistors, metal oxide film resistors, fusible resistors, precision metal film resistors, and wirewound resistors. For example, a resistor with four bands where the coding is yellow 4, violet 7, red. These colour bands are known as resistor colour code all leaded resistors with a power rating up to one watt are marked with colour bands. Sep 28, 2015 resistor color code is used to indicate the value of resistance. Resistance color code chart with examples of 4 and 5band resistors. Resistors are available in many different values, shapes, and physical sizes.
The quiz and worksheet help you evaluate your knowledge of color codes on resistors. Axial resistors are cylindrical with a group of color bands, while surface mounted resistors are rectangular with alphanumeric codes. A resistor is an electric element that limits the flow of the electric current into an electric circuit. The five and six band resistor colour code is more commonly associated with the high precision 1% and 2% film types while the common garden variety 5% and 10% general purpose types tend to use the four band resistor colour code. The resistors have a band of colours shown in their outer covering. To calculate the color code of the above 5 band resistor, 5 band resistors consist of colors. Three 3 band resistor resistance color code calculator. Resistor values are often indicated with color codes. The general purpose carbon film resistors which are used in electrical and electronic circuits are marked using a four colored bands.
Electronic components like resistors are very small in size and its difficult to print its value directly on to the component surface. Well resistors have standard colors for the purpose of identification of their resistance. Color coding is a method used to indicate the resistive value, tolerance, and temperature coefficient of resistors with low wattage rating because of their small size. Resistor color code system resistor color coding system applies to carbon film resistors, metal oxide film resistors, fusible resistors, precision metal film resistors, and wirewound resistors cylindrical with enlarged ends of the axial lead type. The color coding of these color bands on the resistor is used to identify the value and tolerance. Learn more about resistors and resistor color codes. A separate code, the 25pair color code, is used to identify wires in some telecommunications cables. Resistor colour coding uses coloured bands to easily identify a resistors resistive value and its percentage tolerance. Resistors can be found in almost every household appliance. Take the quiz beforehand to check what you already know, and. In the case of resistors, color coding is used to identify a specific resistance value, for example a 100 ohms resistor or a 1 kilo ohms resistor with 5% tolerance. The main purpose of a resistor is to maintain specified values of voltage and current in an electronic circuit. In a previous article about basics information about resistors, we have seen, there are four color bands on each resistor. In the example on the left these bands are green, blue, red and gold.
Color bands are used because they can be easily and cheaply printed on a small electronic component. The table can also be used to specify the color of the bands when the values are known. A current that is passed through the resistor is always directly proportional to the voltage across the terminals of the resistors. This standard describes color coding for axially leaded resistors and numeric code for smd resistors. Look for the 3 colors which they are near on each other. Since the average resistor is too small to have the value printed on it, the resistance value is displayed using the color code the colored barsthe colored stripes. How to memorize the resistor color code the reason i came up with this is because in high school and in college they taught us the same offensive phrase, bad boys, etc, but violet gives willingly. This system was employed for resistors when the surface area was not sufficient to print the resistance value for the past time.
Sep 10, 2012 in this video you will learn how to read the resistor color code by using the color code chart. The colors brown, red, green, blue, and violet are used as tolerance codes on 5band resistors only. There are four different color bands a, b, c and d printed on the resistor body as shown in a below figure. In our previous post we saw that there are many different types of resistor available that can be used in both electrical and electronic circuits. The chart below shows how to determine the resistance and tolerance for resistors. Following are the ways to understand which end of the resistor must be used for reading the colour codes. Dec 20, 2016 if you want to understand resistor color coding then you are at right place where you are explained full resistor calculator depending upon the resistor colour bands which are always confusing for the electricians. Download resistor color code software for pc for free. The color codes are used not only in resistors but also in other electronic components such as capacitors and inductors specifying the values or ratings of electronic components such resistors, capacitors, and inductors by using the color codes printed on them is called electronic color code system. Hold the resistor with these grouped bands to your left. Well, let us tell you its a cakewalk now with resistor color code chart. Working of resistorsresistance,unit,symbol,types,colour. Resistor color coding uses colored bands to quickly identify a resistors resistive value and its percentage of tolerance with the physical size of the resistor indicating its wattage rating.
The coding is defined in the international standard iec 60062. Resistor color code 1st nd digit 2 digit 3rd digit multiplier stripe tolerance 4th stripe black 0 0 0 x 1 brown 1 1 1 x 10 1% red 2 2 2 x 100 orange 3 3 3 x 1 000 yellow 4 4 4 x 10 000. The other four fall into the same order as mentioned for resistors. Conventional fixed resistors have coloured bands showing their value. To use this tool, simply click on a particular color and number and watch how the actual bands on the resistor illustration change. If you want to understand resistor color coding then you are at right place where you are explained full resistor calculator depending upon the resistor colour bands which are always confusing for the electricians. Calculator resistor color code calculator if you are too lazy to think about colors and digits and mat.
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. These resistors have two bands for the resistance value, one multiplier and one tolerance band. There may be three four or sometimes even five rings. How to read colour code of resistor, smd resistor code. Steps in determining the value of the color coded resistor hold the resistor. Did you think reading and decoding the information on resistors is tough. Coding is standardized by the electronic industries alliance eia. For axial resistors, read the color bands from left to right which will tell you the ohmic value, multipliers, and tolerance.
The standards for color coding registers are defined in international standards iec 60062. The power rating of the resistor depends upon the physical size of the resistor. To calculate the color code of the above 6 colorband resistor, 6 band resistors consist of colors. Resistors and the color codes although the color code is not only for resistors, the ability to read the resistor color code is more required among engineers and scientists. Given 10 different sets of color bands, determine the resistor values and tolerances. The value of the resistance is found out by colour coding. When looking at the chart, note the illustration of three round resistors with numerous color code bands. And also, the entire body of the resistor is colored. Resistors are electrical components that create resistance in the flow of an electrical current, which allows the current to be controlled in order to power a device. In our previous post we saw that there are many different types of resistor available that can be used in both electrical and electronic circuits the resistance value is a discrete value. Here are the steps to determine the value of the resistor.
To calculate the resistance of a resistor, you can select the appropriate color bands in the above resistor color code calculator how to calculate the resistance. This physics video tutorial explains how to use the resistor color code chart to determine the value of the resistance of a resistor in an electric circuit. The coding of color is defined in the international standard 1ec60062. The resistor color code calculator decodes and identifies a value and tolerance of 4 band wire wound resistors. The four band color code is the most common variation. Arnido jr instructor, colegio san agstin bacolod 2. Resistance resistor color code band 1 band 2 band 3. The first band is a one 1, the second band is a zero 0, and the multiplier band or third band is. Find the value and tolerance of a 4 band, 5 band, or 6 band resistor with our resistor color code calculator or download our color code pdf for reference.