{"id":4569,"date":"2025-09-18T15:45:29","date_gmt":"2025-09-18T07:45:29","guid":{"rendered":"https:\/\/www.flywing-tech.com\/blog\/?p=4569"},"modified":"2025-11-20T14:06:43","modified_gmt":"2025-11-20T06:06:43","slug":"resistor-color-code","status":"publish","type":"post","link":"https:\/\/www.flywing-tech.com\/blog\/resistor-color-code\/","title":{"rendered":"How to Read Resistor Color Code: Chart, Examples"},"content":{"rendered":"<div class=\"fsc_text\"><p data-start=\"417\" data-end=\"863\">Resistors are one of the most important components in electronic circuits, devices, and projects. They have two terminals, and their primary role is to limit or regulate the flow of current within a circuit. If you look closely at a resistor, you\u2019ll notice different colored bands printed on its body. These are<a href=\"https:\/\/en.wikipedia.org\/wiki\/Electronic_color_code\" target=\"_blank\" rel=\"noopener\"> resistor color codes<\/a>, which indicate the resistance value, tolerance, and sometimes the temperature coefficient of the resistor.<\/p>\n<p data-start=\"865\" data-end=\"1007\">In this guide, we will explore the structure of resistors, understand resistor color codes in detail, and learn how to read them accurately<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\r\n<div class=\"ez-toc-title-container\">\r\n<h2 class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/h2>\r\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #023a85;color:#023a85\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #023a85;color:#023a85\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\r\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.flywing-tech.com\/blog\/resistor-color-code\/#structure_of_a_resistor\" >Structure of a Resistor<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.flywing-tech.com\/blog\/resistor-color-code\/#resistor_color_codes_understanding\" >Resistor Color Codes Understanding<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.flywing-tech.com\/blog\/resistor-color-code\/#resistors_color_code_reading_order\" >Resistors&#8217; color code reading order<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.flywing-tech.com\/blog\/resistor-color-code\/#how_to_read_resistor_color_codes\" >How to read resistor color codes?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.flywing-tech.com\/blog\/resistor-color-code\/#resistor_color_code_chart\" >Resistor Color Code Chart<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.flywing-tech.com\/blog\/resistor-color-code\/#smd_resistor_color_code_reading\" >SMD Resistor Color Code Reading<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.flywing-tech.com\/blog\/resistor-color-code\/#british_standard_code_bs_1852\" >British Standard Code (BS 1852)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.flywing-tech.com\/blog\/resistor-color-code\/#importance_of_resistors_in_electronics\" >Importance of Resistors in Electronics<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.flywing-tech.com\/blog\/resistor-color-code\/#some_errors_and_how_to_avoid_them\" >Some Errors and How to Avoid Them<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.flywing-tech.com\/blog\/resistor-color-code\/#high_voltage_resistors_markings\" >High Voltage Resistors Markings<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.flywing-tech.com\/blog\/resistor-color-code\/#standard_resistor_e-series\" >Standard Resistor E-Series<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.flywing-tech.com\/blog\/resistor-color-code\/#1k_ohm_resistor_color_code\" >1k Ohm Resistor Color Code<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.flywing-tech.com\/blog\/resistor-color-code\/#10k10k_ohm_resistor_color_code\" >10K\/10K Ohm Resistor Color Code<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.flywing-tech.com\/blog\/resistor-color-code\/#practical_resistor_selection\" >Practical Resistor Selection<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.flywing-tech.com\/blog\/resistor-color-code\/#conclusion\" >Conclusion<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.flywing-tech.com\/blog\/resistor-color-code\/#frequently_asked_questions_faq\" >Frequently Asked Questions [FAQ]<\/a><\/li><\/ul><\/nav><\/div>\r\n<h2><span class=\"ez-toc-section\" id=\"structure_of_a_resistor\"><\/span>Structure of a Resistor<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"865\" data-end=\"1007\">Resistors are among the most common electronic components we use, and we cannot complete our circuits and projects without them. The primary function of a resistor is to control the current flow in a circuit. A resistor has two pins, a circular shape, and a small size, which make its connection with the circuit easy. Different color bands on the resistor surface help to identify the resistor easily. These color bands indicate the resistance value, which is important for proper resistor connections in the circuit. Based on power rating and applications, resistors come in different shapes and sizes. Small circuits use carbon film resistors, while engineers connect high-power resistors in high-current circuits with heat dissipators, as they generate heat during operation.<\/p>\n<p><a href=\"https:\/\/www.flywing-tech.com\/blog\/wp-content\/uploads\/2025\/09\/Structure-of-a-Resistor.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-4717 size-full\" src=\"https:\/\/www.flywing-tech.com\/blog\/wp-content\/uploads\/2025\/09\/Structure-of-a-Resistor.jpg\" alt=\"Structure of a Resistor\" width=\"491\" height=\"377\" \/><\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"resistor_color_codes_understanding\"><\/span>Resistor Color Codes Understanding<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The<a href=\"https:\/\/neurophysics.ucsd.edu\/courses\/physics_120\/resistorcharts.pdf\" target=\"_blank\" rel=\"noopener\"> resistor color code<\/a> uses a standardized system of colored bands to indicate a resistor\u2019s resistance value, tolerance, and temperature coefficient.In this system, manufacturers print different colored lines or bands on resistors, with each color representing a specific numerical value.<\/p>\n<p data-start=\"392\" data-end=\"759\">Resistors typically have 4, 5, or 6 color bands, depending on the required level of accuracy in the circuit. The first two or three bands represent significant digits, read from left to right. The following bands indicate the multiplier and tolerance. In some special resistor types, an additional band is used to specify the temperature coefficient or reliability.<\/p>\n<p data-start=\"761\" data-end=\"1037\">According to the international standard IEC 60062, each color band corresponds to a predefined value. The multiplier band represents a power of ten, while the tolerance band shows the allowable percentage variation in the resistor\u2019s value, depending on circuit requirements.<\/p>\n<p data-start=\"1039\" data-end=\"1291\">Understanding the resistor color coding system is essential for accurately identifying resistor values and ensuring their proper use in circuits. For this reason, all electronics engineers and students should be familiar with the resistor color code.<\/p>\n<p><a href=\"https:\/\/www.flywing-tech.com\/blog\/wp-content\/uploads\/2025\/09\/Resistor-Color-Codes-Understanding.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-4718 size-full\" src=\"https:\/\/www.flywing-tech.com\/blog\/wp-content\/uploads\/2025\/09\/Resistor-Color-Codes-Understanding.jpg\" alt=\"Resistor Color Codes Understanding\" width=\"756\" height=\"398\" \/><\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"resistors_color_code_reading_order\"><\/span><span data-preserver-spaces=\"true\">Resistors&#8217; color code reading order<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"110\" data-end=\"336\">When measuring resistor values using color bands, the color code sequence may sometimes be misread, leading to incorrect results. To avoid errors, engineers follow specific methods to correctly identify resistor color codes.<\/p>\n<p data-start=\"338\" data-end=\"601\">The first step is to locate the tolerance band, as it helps determine the correct reading direction. Tolerance bands are typically gold, silver, or brown. Gold and silver are less common as the first band, so their presence usually indicates the tolerance band.<\/p>\n<p data-start=\"603\" data-end=\"951\">However, brown can represent both a significant digit and a tolerance band, which sometimes makes it confusing. In such cases, spacing between the bands can help. For example, in a 5-band resistor, the gap between the 4th and 5th bands is usually larger than the spacing between the earlier bands, helping to identify the tolerance band position.<\/p>\n<p data-start=\"953\" data-end=\"1066\">If spacing does not provide enough clarity, the sequence itself can be used to confirm the value. For instance:<\/p>\n<ul data-start=\"1068\" data-end=\"1267\">\n<li data-start=\"1068\" data-end=\"1169\">\n<p data-start=\"1070\" data-end=\"1169\"><strong data-start=\"1070\" data-end=\"1108\">Brown, Black, Black, Yellow, Brown<\/strong> \u2192 Resistance = 100 \u00d7 10,000 = <strong data-start=\"1139\" data-end=\"1147\">1 M\u03a9<\/strong> with \u00b11% tolerance.<\/p>\n<\/li>\n<li data-start=\"1170\" data-end=\"1267\">\n<p data-start=\"1172\" data-end=\"1267\"><strong data-start=\"1172\" data-end=\"1210\">Brown, Yellow, Black, Black, Brown<\/strong> \u2192 Resistance = 140 \u00d7 1 = <strong data-start=\"1236\" data-end=\"1245\">140 \u03a9<\/strong> with \u00b11% tolerance.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1269\" data-end=\"1411\">By carefully checking the tolerance band and color sequence, engineers can accurately determine resistor values and avoid misinterpretation.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"how_to_read_resistor_color_codes\"><\/span>How to read resistor color codes?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div id=\"attachment_4936\" style=\"width: 1463px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.flywing-tech.com\/blog\/wp-content\/uploads\/2025\/09\/How-to-read-resistor-color-codes-1.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-4936\" class=\"wp-image-4936 \" src=\"https:\/\/www.flywing-tech.com\/blog\/wp-content\/uploads\/2025\/09\/How-to-read-resistor-color-codes-1.jpg\" alt=\"How to read resistor color codes\" width=\"1453\" height=\"707\" \/><\/a><p id=\"caption-attachment-4936\" class=\"wp-caption-text\">Click the image to enlarge for a clearer view of the resistor color codes<\/p><\/div>\n<p data-start=\"434\" data-end=\"705\"><strong data-start=\"434\" data-end=\"494\">Reading resistor color codes may seem difficult at first<\/strong>, <strong data-start=\"496\" data-end=\"503\">but<\/strong> the process is actually quite simple. <strong data-start=\"542\" data-end=\"554\">To begin<\/strong>, identify the correct orientation of the resistor. <strong data-start=\"606\" data-end=\"619\">Typically<\/strong>, the bands are read from left to right, starting with the band closest to the edge.<\/p>\n<p data-start=\"712\" data-end=\"817\"><strong data-start=\"712\" data-end=\"736\">As explained earlier<\/strong>, resistors can have different numbers of color bands depending on their purpose.<\/p>\n<ul data-start=\"464\" data-end=\"698\">\n<li data-start=\"464\" data-end=\"532\">\n<p data-start=\"466\" data-end=\"532\"><strong data-start=\"466\" data-end=\"486\">4-band resistors<\/strong> are commonly used for general applications.<\/p>\n<\/li>\n<li data-start=\"533\" data-end=\"580\">\n<p data-start=\"535\" data-end=\"580\"><strong data-start=\"535\" data-end=\"555\">5-band resistors<\/strong> offer higher accuracy.<\/p>\n<\/li>\n<li data-start=\"581\" data-end=\"698\">\n<p data-start=\"583\" data-end=\"698\"><strong data-start=\"400\" data-end=\"417\">Furthermore,<\/strong> 6-band resistors are used in precision applications where the temperature coefficient must also be specified.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"700\" data-end=\"810\">By understanding these variations, you can quickly and accurately interpret resistor values for any circuit.<\/p>\n<table dir=\"ltr\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\" data-sheets-root=\"1\" data-sheets-baot=\"1\">\n<colgroup>\n<col width=\"100\" \/>\n<col width=\"100\" \/>\n<col width=\"100\" \/>\n<col width=\"100\" \/>\n<col width=\"100\" \/>\n<col width=\"100\" \/>\n<col width=\"100\" \/>\n<col width=\"100\" \/>\n<col width=\"100\" \/>\n<col width=\"100\" \/><\/colgroup>\n<tbody>\n<tr>\n<td><strong>0<\/strong><\/td>\n<td><strong>1<\/strong><\/td>\n<td><strong>2<\/strong><\/td>\n<td><strong>3<\/strong><\/td>\n<td><strong>4<\/strong><\/td>\n<td><strong>5<\/strong><\/td>\n<td><strong>6<\/strong><\/td>\n<td><strong>7<\/strong><\/td>\n<td><strong>8<\/strong><\/td>\n<td><strong>9<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Black<\/td>\n<td>Brown<\/td>\n<td>Red<\/td>\n<td>Orange<\/td>\n<td>Yellow<\/td>\n<td>Green<\/td>\n<td>Blue<\/td>\n<td>Violet<\/td>\n<td>Gray<\/td>\n<td>White<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Let&#8217;s explain each band to understand the resistor color code.<\/p>\n<h3>4-Band Resistor Color Code<\/h3>\n<p data-start=\"106\" data-end=\"215\">Four-band resistors are the most commonly used type, and they are identified by four different color bands.<\/p>\n<ul data-start=\"217\" data-end=\"612\">\n<li data-start=\"217\" data-end=\"303\">\n<p data-start=\"219\" data-end=\"303\"><strong data-start=\"219\" data-end=\"237\">The first band<\/strong> represents the first significant digit of the resistance value.<\/p>\n<\/li>\n<li data-start=\"304\" data-end=\"368\">\n<p data-start=\"306\" data-end=\"368\"><strong data-start=\"306\" data-end=\"325\">The second band<\/strong> represents the second significant digit.<\/p>\n<\/li>\n<li data-start=\"369\" data-end=\"482\">\n<p data-start=\"371\" data-end=\"482\"><strong data-start=\"371\" data-end=\"389\">The third band<\/strong> is the multiplier, which indicates the power of ten used to multiply the first two digits.<\/p>\n<\/li>\n<li data-start=\"483\" data-end=\"612\">\n<p data-start=\"485\" data-end=\"612\"><strong data-start=\"485\" data-end=\"504\">The fourth band<\/strong> shows the tolerance, which specifies the possible percentage variation from the nominal resistance value.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"614\" data-end=\"651\"><strong data-start=\"614\" data-end=\"649\">Example of a four-band resistor<\/strong><\/p>\n<p data-start=\"653\" data-end=\"728\">Consider a resistor with the color bands <strong data-start=\"694\" data-end=\"725\">brown, black, red, and gold<\/strong>:<\/p>\n<ul data-start=\"730\" data-end=\"842\">\n<li data-start=\"730\" data-end=\"757\">\n<p data-start=\"732\" data-end=\"757\">Brown = 1 (first digit)<\/p>\n<\/li>\n<li data-start=\"758\" data-end=\"786\">\n<p data-start=\"760\" data-end=\"786\">Black = 0 (second digit)<\/p>\n<\/li>\n<li data-start=\"787\" data-end=\"814\">\n<p data-start=\"789\" data-end=\"814\">Red = multiplier of 10\u00b2<\/p>\n<\/li>\n<li data-start=\"815\" data-end=\"842\">\n<p data-start=\"817\" data-end=\"842\">Gold = tolerance of \u00b15%<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"844\" data-end=\"922\">This gives a resistance value of <strong data-start=\"877\" data-end=\"919\">1,000 \u03a9 (1 k\u03a9) with a tolerance of \u00b15%<\/strong>.<\/p>\n<h3>5-Band Resistor Color Code<\/h3>\n<p data-start=\"98\" data-end=\"239\"><strong data-start=\"410\" data-end=\"427\">As a result,<\/strong> a five-band resistor provides higher accuracy by using three significant digits instead of two.\u00a0 The color bands are interpreted as follows:<\/p>\n<ul data-start=\"241\" data-end=\"476\">\n<li data-start=\"241\" data-end=\"282\">\n<p data-start=\"243\" data-end=\"282\"><strong data-start=\"243\" data-end=\"255\">1st band<\/strong>: first significant digit<\/p>\n<\/li>\n<li data-start=\"283\" data-end=\"325\">\n<p data-start=\"285\" data-end=\"325\"><strong data-start=\"285\" data-end=\"297\">2nd band<\/strong>: second significant digit<\/p>\n<\/li>\n<li data-start=\"326\" data-end=\"367\">\n<p data-start=\"328\" data-end=\"367\"><strong data-start=\"328\" data-end=\"340\">3rd band<\/strong>: third significant digit<\/p>\n<\/li>\n<li data-start=\"368\" data-end=\"411\">\n<p data-start=\"370\" data-end=\"411\"><strong data-start=\"370\" data-end=\"382\">4th band<\/strong>: multiplier (power of ten)<\/p>\n<\/li>\n<li data-start=\"412\" data-end=\"476\">\n<p data-start=\"414\" data-end=\"476\"><strong data-start=\"414\" data-end=\"426\">5th band<\/strong>: tolerance (percentage variation in resistance)<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"478\" data-end=\"515\"><strong data-start=\"478\" data-end=\"513\">Example of a five-band resistor<\/strong><\/p>\n<p data-start=\"517\" data-end=\"600\">Consider a resistor with the color bands <strong data-start=\"558\" data-end=\"597\">red, violet, black, brown, and gold<\/strong>:<\/p>\n<ul data-start=\"602\" data-end=\"743\">\n<li data-start=\"602\" data-end=\"627\">\n<p data-start=\"604\" data-end=\"627\">Red = 2 (first digit)<\/p>\n<\/li>\n<li data-start=\"628\" data-end=\"657\">\n<p data-start=\"630\" data-end=\"657\">Violet = 7 (second digit)<\/p>\n<\/li>\n<li data-start=\"658\" data-end=\"685\">\n<p data-start=\"660\" data-end=\"685\">Black = 0 (third digit)<\/p>\n<\/li>\n<li data-start=\"686\" data-end=\"715\">\n<p data-start=\"688\" data-end=\"715\">Brown = multiplier of 10\u00b9<\/p>\n<\/li>\n<li data-start=\"716\" data-end=\"743\">\n<p data-start=\"718\" data-end=\"743\">Gold = tolerance of \u00b15%<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"745\" data-end=\"825\">This gives a resistance value of <strong data-start=\"778\" data-end=\"822\">2,700 \u03a9 (2.7 k\u03a9) with a tolerance of \u00b15%<\/strong>.<\/p>\n<h3>\u00a06-Band Resistor Color Code<\/h3>\n<p data-start=\"105\" data-end=\"409\">A six-band resistor is used in advanced applications where temperature stability is an important factor. <strong data-start=\"468\" data-end=\"550\">The first five bands are interpreted the same way as in a five-band resistor.<\/strong> <strong data-start=\"551\" data-end=\"567\">Additionally<\/strong>, the sixth band represents the temperature coefficient, measured in parts per million per degree Celsius (ppm\/\u00b0C)<\/p>\n<ul data-start=\"411\" data-end=\"683\">\n<li data-start=\"411\" data-end=\"452\">\n<p data-start=\"413\" data-end=\"452\"><strong data-start=\"413\" data-end=\"425\">1st band<\/strong>: first significant digit<\/p>\n<\/li>\n<li data-start=\"453\" data-end=\"495\">\n<p data-start=\"455\" data-end=\"495\"><strong data-start=\"455\" data-end=\"467\">2nd band<\/strong>: second significant digit<\/p>\n<\/li>\n<li data-start=\"496\" data-end=\"537\">\n<p data-start=\"498\" data-end=\"537\"><strong data-start=\"498\" data-end=\"510\">3rd band<\/strong>: third significant digit<\/p>\n<\/li>\n<li data-start=\"538\" data-end=\"581\">\n<p data-start=\"540\" data-end=\"581\"><strong data-start=\"540\" data-end=\"552\">4th band<\/strong>: multiplier (power of ten)<\/p>\n<\/li>\n<li data-start=\"582\" data-end=\"632\">\n<p data-start=\"584\" data-end=\"632\"><strong data-start=\"584\" data-end=\"596\">5th band<\/strong>: tolerance (percentage variation)<\/p>\n<\/li>\n<li data-start=\"633\" data-end=\"683\">\n<p data-start=\"635\" data-end=\"683\"><strong data-start=\"635\" data-end=\"647\">6th band<\/strong>: temperature coefficient (ppm\/\u00b0C)<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"685\" data-end=\"721\"><strong data-start=\"685\" data-end=\"719\">Example of a six-band resistor<\/strong><\/p>\n<p data-start=\"723\" data-end=\"814\">Consider a resistor with the color bands <strong data-start=\"764\" data-end=\"811\">yellow, violet, black, red, brown, and blue<\/strong>:<\/p>\n<ul data-start=\"816\" data-end=\"1007\">\n<li data-start=\"816\" data-end=\"844\">\n<p data-start=\"818\" data-end=\"844\">Yellow = 4 (first digit)<\/p>\n<\/li>\n<li data-start=\"845\" data-end=\"874\">\n<p data-start=\"847\" data-end=\"874\">Violet = 7 (second digit)<\/p>\n<\/li>\n<li data-start=\"875\" data-end=\"902\">\n<p data-start=\"877\" data-end=\"902\">Black = 0 (third digit)<\/p>\n<\/li>\n<li data-start=\"903\" data-end=\"930\">\n<p data-start=\"905\" data-end=\"930\">Red = multiplier of 10\u00b2<\/p>\n<\/li>\n<li data-start=\"931\" data-end=\"959\">\n<p data-start=\"933\" data-end=\"959\">Brown = tolerance of \u00b11%<\/p>\n<\/li>\n<li data-start=\"960\" data-end=\"1007\">\n<p data-start=\"962\" data-end=\"1007\">Blue = temperature coefficient of 10 ppm\/\u00b0C<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1009\" data-end=\"1144\">This resistor has a resistance value of <strong data-start=\"1049\" data-end=\"1069\">47,000 \u03a9 (47 k\u03a9)<\/strong>, with a tolerance of \u00b11% and a temperature coefficient of <strong data-start=\"1128\" data-end=\"1141\">10 ppm\/\u00b0C<\/strong>.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"resistor_color_code_chart\"><\/span><strong>Resistor Color Code Chart<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<table dir=\"ltr\" style=\"height: 467px;\" border=\"1\" width=\"845\" cellspacing=\"0\" cellpadding=\"0\" data-sheets-root=\"1\" data-sheets-baot=\"1\">\n<colgroup>\n<col width=\"100\" \/>\n<col width=\"100\" \/>\n<col width=\"100\" \/>\n<col width=\"100\" \/>\n<col width=\"100\" \/><\/colgroup>\n<tbody>\n<tr>\n<td><strong>Color<\/strong><\/td>\n<td><strong>Digit<\/strong><\/td>\n<td><strong>Multiplier<\/strong><\/td>\n<td><strong>Tolerance<\/strong><\/td>\n<td>\n<div>\n<div><strong>Temp. Coefficient (ppm\/\u00b0C)<\/strong><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<tr>\n<td>Black<\/td>\n<td>0<\/td>\n<td>\u00d71 (10\u2070)<\/td>\n<td>\u2014<\/td>\n<td>250<\/td>\n<\/tr>\n<tr>\n<td>Brown<\/td>\n<td>1<\/td>\n<td>\u00d710 (10\u00b9)<\/td>\n<td>\u00b11%<\/td>\n<td>100<\/td>\n<\/tr>\n<tr>\n<td>Red<\/td>\n<td>2<\/td>\n<td>\u00d7100 (10\u00b2)<\/td>\n<td>\u00b12%<\/td>\n<td>50<\/td>\n<\/tr>\n<tr>\n<td>Orange<\/td>\n<td>3<\/td>\n<td>\u00d71,000 (10\u00b3)<\/td>\n<td>\u2014<\/td>\n<td>15<\/td>\n<\/tr>\n<tr>\n<td>Yellow<\/td>\n<td>4<\/td>\n<td>\u00d710,000 (10\u2074)<\/td>\n<td>\u2014<\/td>\n<td>25<\/td>\n<\/tr>\n<tr>\n<td>Green<\/td>\n<td>5<\/td>\n<td>\u00d7100,000 (10\u2075)<\/td>\n<td>\u00b10.5%<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<tr>\n<td>Blue<\/td>\n<td>6<\/td>\n<td>\u00d71,000,000 (10\u2076)<\/td>\n<td>\u00b10.25%<\/td>\n<td>10<\/td>\n<\/tr>\n<tr>\n<td>Violet<\/td>\n<td>7<\/td>\n<td>\u00d710,000,000 (10\u2077)<\/td>\n<td>\u00b10.1%<\/td>\n<td>5<\/td>\n<\/tr>\n<tr>\n<td>Gray<\/td>\n<td>8<\/td>\n<td>\u00d7100,000,000 (10\u2078)<\/td>\n<td>\u00b10.05%<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<tr>\n<td>White<\/td>\n<td>9<\/td>\n<td>\u00d71,000,000,000 (10\u2079)<\/td>\n<td>\u2014<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<tr>\n<td>Gold<\/td>\n<td>\u2014<\/td>\n<td>\u00d70.1 (10\u207b\u00b9)<\/td>\n<td>\u00b15%<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<tr>\n<td>Silver<\/td>\n<td>\u2014<\/td>\n<td>\u00d70.01 (10\u207b\u00b2)<\/td>\n<td>\u00b110%<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<tr>\n<td>No Color<\/td>\n<td>\u2014<\/td>\n<td>\u2014<\/td>\n<td>\u00b120%<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span class=\"ez-toc-section\" id=\"smd_resistor_color_code_reading\"><\/span><strong>SMD Resistor Color Code Reading<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"106\" data-end=\"227\">SMD resistors use three main coding systems: the <strong data-start=\"155\" data-end=\"173\">3-digit system<\/strong>, the <strong data-start=\"179\" data-end=\"197\">4-digit system<\/strong>, and the <strong data-start=\"207\" data-end=\"224\">EIA-96 system<\/strong>.<\/p>\n<h3 data-start=\"106\" data-end=\"227\">3-Digit and 4-Digit Code Systems<\/h3>\n<p data-start=\"229\" data-end=\"424\"><strong data-start=\"445\" data-end=\"574\">In the 3-digit and 4-digit systems, the first two or three digits represent the significant figures of the resistance value.<\/strong> <strong data-start=\"575\" data-end=\"589\">Meanwhile,<\/strong> the last digit indicates the number of zeros (the multiplier).<\/p>\n<p data-start=\"426\" data-end=\"441\"><strong data-start=\"426\" data-end=\"439\">Examples:<\/strong><\/p>\n<ul data-start=\"442\" data-end=\"555\">\n<li data-start=\"442\" data-end=\"494\">\n<p data-start=\"444\" data-end=\"494\">A code of <strong data-start=\"454\" data-end=\"462\">7500<\/strong> means 750 \u00d7 10 = <strong data-start=\"480\" data-end=\"491\">7,500 \u03a9<\/strong>.<\/p>\n<\/li>\n<li data-start=\"442\" data-end=\"494\">\n<p data-start=\"444\" data-end=\"494\">A code of <strong data-start=\"507\" data-end=\"514\">103<\/strong> means 10 \u00d7 10\u00b3 = <strong data-start=\"532\" data-end=\"552\">10,000 \u03a9 (10 k\u03a9)<\/strong>.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"557\" data-end=\"728\">For resistance values below 10 ohms, the letter <strong data-start=\"605\" data-end=\"610\">R<\/strong> is used to represent the decimal point. For example, a resistor marked <strong data-start=\"682\" data-end=\"689\">8R2<\/strong> has a resistance value of <strong data-start=\"716\" data-end=\"725\">8.2 \u03a9<\/strong>.<\/p>\n<h3 data-start=\"557\" data-end=\"728\">EIA-96 Code System for Precision Resistors<\/h3>\n<p data-start=\"730\" data-end=\"1010\">The <strong data-start=\"734\" data-end=\"751\">EIA-96 system<\/strong> is used for precision resistors with \u00b11% tolerance. This system provides a wide range of resistance values with high accuracy. In this method, the first two characters are taken from the <strong data-start=\"939\" data-end=\"957\">E96 code chart<\/strong>, and the third character indicates the multiplier.<\/p>\n<p data-start=\"1012\" data-end=\"1241\"><strong data-start=\"1012\" data-end=\"1024\">Example:<\/strong><br data-start=\"1024\" data-end=\"1027\" \/>A code of <strong data-start=\"1037\" data-end=\"1044\">54B<\/strong> corresponds to a base value of <strong data-start=\"1076\" data-end=\"1083\">357<\/strong> (from the E96 chart), and the letter <strong data-start=\"1121\" data-end=\"1126\">B<\/strong> represents a multiplier of 10. Therefore, the resistance value is <strong data-start=\"1193\" data-end=\"1214\">3,570 \u03a9 (3.57 k\u03a9)<\/strong> with a tolerance of \u00b11%.<\/p>\n<table dir=\"ltr\" style=\"height: 659px;\" border=\"1\" width=\"978\" cellspacing=\"0\" cellpadding=\"0\" data-sheets-root=\"1\" data-sheets-baot=\"1\">\n<colgroup>\n<col width=\"100\" \/>\n<col width=\"100\" \/>\n<col width=\"100\" \/>\n<col width=\"100\" \/>\n<col width=\"100\" \/>\n<col width=\"100\" \/>\n<col width=\"100\" \/>\n<col width=\"100\" \/><\/colgroup>\n<tbody>\n<tr>\n<td><strong>Code<\/strong><\/td>\n<td><strong>Value (\u03a9)<\/strong><\/td>\n<td><strong>Code<\/strong><\/td>\n<td><strong>Value (\u03a9)<\/strong><\/td>\n<td><strong>Code<\/strong><\/td>\n<td><strong>Value (\u03a9)<\/strong><\/td>\n<td><strong>Code<\/strong><\/td>\n<td><strong>Value (\u03a9)<\/strong><\/td>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td>100<\/td>\n<td>25<\/td>\n<td>178<\/td>\n<td>49<\/td>\n<td>316<\/td>\n<td>73<\/td>\n<td>562<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>102<\/td>\n<td>26<\/td>\n<td>182<\/td>\n<td>50<\/td>\n<td>324<\/td>\n<td>74<\/td>\n<td>576<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>105<\/td>\n<td>27<\/td>\n<td>187<\/td>\n<td>51<\/td>\n<td>332<\/td>\n<td>75<\/td>\n<td>590<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>107<\/td>\n<td>28<\/td>\n<td>191<\/td>\n<td>52<\/td>\n<td>340<\/td>\n<td>76<\/td>\n<td>604<\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td>110<\/td>\n<td>29<\/td>\n<td>196<\/td>\n<td>53<\/td>\n<td>348<\/td>\n<td>77<\/td>\n<td>619<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>113<\/td>\n<td>30<\/td>\n<td>200<\/td>\n<td>54<\/td>\n<td>357<\/td>\n<td>78<\/td>\n<td>634<\/td>\n<\/tr>\n<tr>\n<td>7<\/td>\n<td>115<\/td>\n<td>31<\/td>\n<td>205<\/td>\n<td>55<\/td>\n<td>365<\/td>\n<td>79<\/td>\n<td>649<\/td>\n<\/tr>\n<tr>\n<td>8<\/td>\n<td>118<\/td>\n<td>32<\/td>\n<td>210<\/td>\n<td>56<\/td>\n<td>374<\/td>\n<td>80<\/td>\n<td>665<\/td>\n<\/tr>\n<tr>\n<td>9<\/td>\n<td>121<\/td>\n<td>33<\/td>\n<td>215<\/td>\n<td>57<\/td>\n<td>383<\/td>\n<td>81<\/td>\n<td>681<\/td>\n<\/tr>\n<tr>\n<td>10<\/td>\n<td>124<\/td>\n<td>34<\/td>\n<td>221<\/td>\n<td>58<\/td>\n<td>392<\/td>\n<td>82<\/td>\n<td>698<\/td>\n<\/tr>\n<tr>\n<td>11<\/td>\n<td>127<\/td>\n<td>35<\/td>\n<td>226<\/td>\n<td>59<\/td>\n<td>402<\/td>\n<td>83<\/td>\n<td>715<\/td>\n<\/tr>\n<tr>\n<td>12<\/td>\n<td>130<\/td>\n<td>36<\/td>\n<td>232<\/td>\n<td>60<\/td>\n<td>412<\/td>\n<td>84<\/td>\n<td>732<\/td>\n<\/tr>\n<tr>\n<td>13<\/td>\n<td>133<\/td>\n<td>37<\/td>\n<td>237<\/td>\n<td>61<\/td>\n<td>422<\/td>\n<td>85<\/td>\n<td>750<\/td>\n<\/tr>\n<tr>\n<td>14<\/td>\n<td>137<\/td>\n<td>38<\/td>\n<td>243<\/td>\n<td>62<\/td>\n<td>432<\/td>\n<td>86<\/td>\n<td>768<\/td>\n<\/tr>\n<tr>\n<td>15<\/td>\n<td>140<\/td>\n<td>39<\/td>\n<td>249<\/td>\n<td>63<\/td>\n<td>442<\/td>\n<td>87<\/td>\n<td>787<\/td>\n<\/tr>\n<tr>\n<td>16<\/td>\n<td>143<\/td>\n<td>40<\/td>\n<td>255<\/td>\n<td>64<\/td>\n<td>453<\/td>\n<td>88<\/td>\n<td>806<\/td>\n<\/tr>\n<tr>\n<td>17<\/td>\n<td>147<\/td>\n<td>41<\/td>\n<td>261<\/td>\n<td>65<\/td>\n<td>464<\/td>\n<td>89<\/td>\n<td>825<\/td>\n<\/tr>\n<tr>\n<td>18<\/td>\n<td>150<\/td>\n<td>42<\/td>\n<td>267<\/td>\n<td>66<\/td>\n<td>475<\/td>\n<td>90<\/td>\n<td>845<\/td>\n<\/tr>\n<tr>\n<td>19<\/td>\n<td>154<\/td>\n<td>43<\/td>\n<td>274<\/td>\n<td>67<\/td>\n<td>487<\/td>\n<td>91<\/td>\n<td>866<\/td>\n<\/tr>\n<tr>\n<td>20<\/td>\n<td>158<\/td>\n<td>44<\/td>\n<td>280<\/td>\n<td>68<\/td>\n<td>499<\/td>\n<td>92<\/td>\n<td>887<\/td>\n<\/tr>\n<tr>\n<td>21<\/td>\n<td>162<\/td>\n<td>45<\/td>\n<td>287<\/td>\n<td>69<\/td>\n<td>511<\/td>\n<td>93<\/td>\n<td>909<\/td>\n<\/tr>\n<tr>\n<td>22<\/td>\n<td>165<\/td>\n<td>46<\/td>\n<td>294<\/td>\n<td>70<\/td>\n<td>523<\/td>\n<td>94<\/td>\n<td>931<\/td>\n<\/tr>\n<tr>\n<td>23<\/td>\n<td>169<\/td>\n<td>47<\/td>\n<td>301<\/td>\n<td>71<\/td>\n<td>536<\/td>\n<td>95<\/td>\n<td>953<\/td>\n<\/tr>\n<tr>\n<td>24<\/td>\n<td>174<\/td>\n<td>48<\/td>\n<td>309<\/td>\n<td>72<\/td>\n<td>549<\/td>\n<td>96<\/td>\n<td>976<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span class=\"ez-toc-section\" id=\"british_standard_code_bs_1852\"><\/span><strong>British Standard Code (BS 1852)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"98\" data-end=\"262\">For larger power resistors, the resistor color code is not required because the tolerance and power rating are usually printed directly on the resistor\u2019s surface.<\/p>\n<p data-start=\"264\" data-end=\"490\">If a resistor becomes rusted or discolored, its resistance value can be difficult to read. To solve this issue, the <strong data-start=\"380\" data-end=\"404\">BS1852 coding system<\/strong> was introduced, making it easier to identify resistance values and related factors.<\/p>\n<p data-start=\"492\" data-end=\"509\">In this system:<\/p>\n<ul data-start=\"510\" data-end=\"660\">\n<li data-start=\"510\" data-end=\"558\">\n<p data-start=\"512\" data-end=\"558\"><strong data-start=\"512\" data-end=\"517\">M<\/strong> is used to indicate the decimal point.<\/p>\n<\/li>\n<li data-start=\"559\" data-end=\"619\">\n<p data-start=\"561\" data-end=\"619\"><strong data-start=\"561\" data-end=\"566\">R<\/strong> is used as a multiplier equal to or less than one.<\/p>\n<\/li>\n<li data-start=\"620\" data-end=\"660\">\n<p data-start=\"622\" data-end=\"660\"><strong data-start=\"622\" data-end=\"627\">K<\/strong> denotes kilo-ohms (thousands).<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"662\" data-end=\"703\"><strong data-start=\"662\" data-end=\"701\">Examples of BS1852 resistor values:<\/strong><\/p>\n<ul data-start=\"704\" data-end=\"923\">\n<li data-start=\"704\" data-end=\"722\">\n<p data-start=\"706\" data-end=\"722\">1 M\u03a9 = <strong data-start=\"713\" data-end=\"720\">1M0<\/strong><\/p>\n<\/li>\n<li data-start=\"723\" data-end=\"756\">\n<p data-start=\"725\" data-end=\"756\">470 K\u03a9 = <strong data-start=\"734\" data-end=\"742\">0M47<\/strong> or <strong data-start=\"746\" data-end=\"754\">470K<\/strong><\/p>\n<\/li>\n<li data-start=\"757\" data-end=\"776\">\n<p data-start=\"759\" data-end=\"776\">47 K\u03a9 = <strong data-start=\"767\" data-end=\"774\">47K<\/strong><\/p>\n<\/li>\n<li data-start=\"777\" data-end=\"797\">\n<p data-start=\"779\" data-end=\"797\">4.7 K\u03a9 = <strong data-start=\"788\" data-end=\"795\">4K7<\/strong><\/p>\n<\/li>\n<li data-start=\"798\" data-end=\"818\">\n<p data-start=\"800\" data-end=\"818\">1.0 K\u03a9 = <strong data-start=\"809\" data-end=\"816\">1K0<\/strong><\/p>\n<\/li>\n<li data-start=\"819\" data-end=\"851\">\n<p data-start=\"821\" data-end=\"851\">0.47 \u03a9 = <strong data-start=\"830\" data-end=\"838\">0R47<\/strong> or <strong data-start=\"842\" data-end=\"849\">R47<\/strong><\/p>\n<\/li>\n<li data-start=\"852\" data-end=\"871\">\n<p data-start=\"854\" data-end=\"871\">1.0 \u03a9 = <strong data-start=\"862\" data-end=\"869\">1R0<\/strong><\/p>\n<\/li>\n<li data-start=\"872\" data-end=\"890\">\n<p data-start=\"874\" data-end=\"890\">47 \u03a9 = <strong data-start=\"881\" data-end=\"888\">47R<\/strong><\/p>\n<\/li>\n<li data-start=\"891\" data-end=\"923\">\n<p data-start=\"893\" data-end=\"923\">470 \u03a9 = <strong data-start=\"901\" data-end=\"909\">0K47<\/strong> or <strong data-start=\"913\" data-end=\"921\">470R<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"925\" data-end=\"1096\">Manufacturers also indicate tolerance with a letter written alongside the resistance value. <strong data-start=\"861\" data-end=\"877\">For instance<\/strong>, the marking <strong data-start=\"891\" data-end=\"900\">47K J<\/strong> specifies a resistor of 47 k\u03a9, where the letter <strong data-start=\"949\" data-end=\"956\">\u201cJ\u201d<\/strong> represents the tolerance code. <strong data-start=\"988\" data-end=\"1001\">Therefore<\/strong>, this system helps quickly identify resistance and tolerance values.<\/p>\n<p data-start=\"103\" data-end=\"169\">Different letters are used to denote the tolerance of resistors:<\/p>\n<ul data-start=\"171\" data-end=\"307\">\n<li data-start=\"171\" data-end=\"188\">\n<p data-start=\"173\" data-end=\"188\"><strong data-start=\"173\" data-end=\"178\">B<\/strong> = \u00b10.1%<\/p>\n<\/li>\n<li data-start=\"189\" data-end=\"207\">\n<p data-start=\"191\" data-end=\"207\"><strong data-start=\"191\" data-end=\"196\">C<\/strong> = \u00b10.25%<\/p>\n<\/li>\n<li data-start=\"208\" data-end=\"225\">\n<p data-start=\"210\" data-end=\"225\"><strong data-start=\"210\" data-end=\"215\">D<\/strong> = \u00b10.5%<\/p>\n<\/li>\n<li data-start=\"226\" data-end=\"241\">\n<p data-start=\"228\" data-end=\"241\"><strong data-start=\"228\" data-end=\"233\">F<\/strong> = \u00b11%<\/p>\n<\/li>\n<li data-start=\"242\" data-end=\"257\">\n<p data-start=\"244\" data-end=\"257\"><strong data-start=\"244\" data-end=\"249\">G<\/strong> = \u00b12%<\/p>\n<\/li>\n<li data-start=\"258\" data-end=\"273\">\n<p data-start=\"260\" data-end=\"273\"><strong data-start=\"260\" data-end=\"265\">J<\/strong> = \u00b15%<\/p>\n<\/li>\n<li data-start=\"274\" data-end=\"290\">\n<p data-start=\"276\" data-end=\"290\"><strong data-start=\"276\" data-end=\"281\">K<\/strong> = \u00b110%<\/p>\n<\/li>\n<li data-start=\"291\" data-end=\"307\">\n<p data-start=\"293\" data-end=\"307\"><strong data-start=\"293\" data-end=\"298\">M<\/strong> = \u00b120%<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"309\" data-end=\"440\">For example, in the case of a resistor marked 47K J, the letter J indicates that the resistor has a tolerance of \u00b15%. Therefore, this marking helps users quickly identify the resistor\u2019s precision level.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-4723\" src=\"https:\/\/www.flywing-tech.com\/blog\/wp-content\/uploads\/2025\/09\/British-Standard-Code.jpg\" alt=\"British Standard Code\" width=\"701\" height=\"183\" \/><\/p>\n<ul class=\"custom-disc\">\n<li>We uses Different alphabets to denote the tolerance of resistors, such as<\/li>\n<\/ul>\n<table dir=\"ltr\" style=\"height: 245px;\" border=\"1\" width=\"811\" cellspacing=\"0\" cellpadding=\"0\" data-sheets-root=\"1\" data-sheets-baot=\"1\">\n<colgroup>\n<col width=\"100\" \/>\n<col width=\"100\" \/><\/colgroup>\n<tbody>\n<tr>\n<td><strong>Code<\/strong><\/td>\n<td><strong>Tolerance<\/strong><\/td>\n<\/tr>\n<tr>\n<td>B<\/td>\n<td>\u00b10.1%<\/td>\n<\/tr>\n<tr>\n<td>C<\/td>\n<td>\u00b10.25%<\/td>\n<\/tr>\n<tr>\n<td>D<\/td>\n<td>\u00b10.5%<\/td>\n<\/tr>\n<tr>\n<td>F<\/td>\n<td>\u00b11%<\/td>\n<\/tr>\n<tr>\n<td>G<\/td>\n<td>\u00b12%<\/td>\n<\/tr>\n<tr>\n<td>J<\/td>\n<td>\u00b15%<\/td>\n<\/tr>\n<tr>\n<td>K<\/td>\n<td>\u00b110%<\/td>\n<\/tr>\n<tr>\n<td>M<\/td>\n<td>\u00b120%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>In the above example, we used the letter J, which means this resistor has a tolerance of 5%.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"importance_of_resistors_in_electronics\"><\/span><span data-preserver-spaces=\"true\">Importance of Resistors in Electronics<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"116\" data-end=\"397\">A resistor is a fundamental component in electronic circuits, playing a crucial role in ensuring they operate safely and effectively. Understanding the correct resistance value is crucial\u2014without it, you cannot achieve the desired performance in a circuit.<\/p>\n<p data-start=\"399\" data-end=\"713\">Using a resistor with an incorrect rating can cause excessive current to flow. As a result, the circuit and other connected components, such as<a href=\"https:\/\/www.flywing-tech.com\/blog\/automotive-image-sensor-eliminates-flicker-from-led-traffic-lights\/\" target=\"_blank\" rel=\"noopener\"> LED<\/a>s, may become damaged. Moreover, in addition to current control, resistors are essential for voltage regulation, signal conditioning, and timing functions, making them a core part of many electronic systems.<\/p>\n<p data-start=\"715\" data-end=\"1063\">Technicians often use color-coding techniques to determine the resistance value. Alternatively, they can use instruments like multimeters or ohmmeters. To measure resistance with a multimeter, simply set the device to resistance mode and connect the probes to the resistor terminals. The resistance value, measured in ohms, will appear on the display.<\/p>\n<p data-start=\"1065\" data-end=\"1272\">In addition, technicians measure resistance to diagnose and identify damaged components, especially those affected by environmental factors, and replace them to maintain proper circuit functionality.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"some_errors_and_how_to_avoid_them\"><\/span>Some Errors and How to Avoid Them<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"216\" data-end=\"340\">Errors in reading resistors often stem from a lack of proper skills or environmental factors. Here are some common mistakes:<\/p>\n<h4 data-start=\"342\" data-end=\"376\">1. <strong data-start=\"350\" data-end=\"376\">Misinterpreting Colors<\/strong><\/h4>\n<p data-start=\"378\" data-end=\"636\">Under poor lighting conditions, some resistor colors\u2014such as red, orange, blue, and green\u2014can appear similar, leading to incorrect readings. Always ensure proper lighting when identifying color bands, and verify the value with a multimeter to avoid mistakes.<\/p>\n<h4 data-start=\"638\" data-end=\"680\">2. <strong data-start=\"646\" data-end=\"680\">Reading in the Wrong Direction<\/strong><\/h4>\n<p data-start=\"682\" data-end=\"917\">Reading a resistor from the wrong end can result in inaccurate values.Position the tolerance band (usually gold or silver) on the far right. Flipping the resistor will cause the color code to give an incorrect value.<\/p>\n<h4 data-start=\"919\" data-end=\"971\">3. <strong data-start=\"927\" data-end=\"971\">Temperature Coefficient Misunderstanding<\/strong><\/h4>\n<p data-start=\"973\" data-end=\"1254\">High-precision resistors often include an additional color band to indicate the <strong data-start=\"1053\" data-end=\"1080\">temperature coefficient<\/strong>. This specification can affect resistance under varying temperatures. Therefore, always consult the manufacturer\u2019s datasheet or manual before reading such resistors to ensure accuracy.<\/p>\n<div class=\"markdown prose dark:prose-invert w-full break-words light markdown-new-styling\">\n<h2 data-start=\"973\" data-end=\"1254\"><span class=\"ez-toc-section\" id=\"high_voltage_resistors_markings\"><\/span>High Voltage Resistors Markings<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-4928\" src=\"https:\/\/www.flywing-tech.com\/blog\/wp-content\/uploads\/2025\/09\/High-Voltage-Resistors.jpg\" alt=\"High Voltage Resistors\" width=\"339\" height=\"328\" \/><\/p>\n<\/div>\n<p data-start=\"130\" data-end=\"687\">When designing high-voltage resistors, special considerations are required. Specifically, in such resistors, silver and gold color bands are not used, as they could create inadvertent combinations of metallic components in the external coating. As a result, these metallic particles may pose safety hazards under high-voltage conditions. Instead, yellow and gray bands are used to mark high-voltage resistors. Consequently, this approach not only distinguishes them from conventional color code systems but also reduces the risk of misidentification.<\/p>\n<p data-start=\"689\" data-end=\"1143\">Furthermore, high-voltage applications demand additional features in resistors, including optimized core design and the use of proper insulating materials. These resistors must therefore provide excellent insulation properties and withstand voltage stress safely. To achieve this, manufacturers apply specialized parameters, materials, and production processes, thereby ensuring reliable operation even during sudden voltage spikes or overheating.<\/p>\n<p data-start=\"1042\" data-end=\"1095\"><strong data-start=\"1042\" data-end=\"1093\">Applications of high-voltage resistors include:<\/strong><\/p>\n<ul data-start=\"1096\" data-end=\"1175\">\n<li data-start=\"1096\" data-end=\"1124\">\n<p data-start=\"1098\" data-end=\"1124\">Power management systems<\/p>\n<\/li>\n<li data-start=\"1125\" data-end=\"1155\">\n<p data-start=\"1127\" data-end=\"1155\">Industrial control systems<\/p>\n<\/li>\n<li data-start=\"1156\" data-end=\"1175\">\n<p data-start=\"1158\" data-end=\"1175\">Medical devices<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1177\" data-end=\"1294\">These design features make high-voltage resistors safe, stable, and suitable for demanding electrical environments.<\/p>\n<div>\n<h2 id=\"standard-resistor-e-series-(e6,-e12,-e24,-e48,-e96,-e192)\"><span class=\"ez-toc-section\" id=\"standard_resistor_e-series\"><\/span>Standard Resistor E-Series<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>\n<p data-start=\"102\" data-end=\"341\">It is not practical to produce every possible resistance value for industrial use. To address this, resistors are manufactured in specific groups known as the <strong data-start=\"261\" data-end=\"273\">E-series<\/strong>, which provide a set of standard resistor values for each decade.<\/p>\n<\/li>\n<li>\n<p data-start=\"102\" data-end=\"341\">The letter <strong data-start=\"354\" data-end=\"359\">E<\/strong> is followed by a number that represents the total number of values within one decade of the series. The most commonly used resistor series are:<\/p>\n<\/li>\n<\/ul>\n<table dir=\"ltr\" style=\"height: 298px;\" border=\"1\" width=\"1165\" cellspacing=\"0\" cellpadding=\"0\" data-sheets-root=\"1\" data-sheets-baot=\"1\">\n<colgroup>\n<col width=\"100\" \/>\n<col width=\"100\" \/>\n<col width=\"100\" \/><\/colgroup>\n<tbody>\n<tr>\n<td><strong>E-Series<\/strong><\/td>\n<td><strong>Values per Decade<\/strong><\/td>\n<td>\n<div>\n<div><strong>Typical Tolerance<\/strong><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<tr>\n<td>E6<\/td>\n<td>6<\/td>\n<td>\u00b120%<\/td>\n<\/tr>\n<tr>\n<td>E12<\/td>\n<td>12<\/td>\n<td>\u00b110%<\/td>\n<\/tr>\n<tr>\n<td>E24<\/td>\n<td>24<\/td>\n<td>\u00b15%<\/td>\n<\/tr>\n<tr>\n<td>E48<\/td>\n<td>48<\/td>\n<td>\u00b12%<\/td>\n<\/tr>\n<tr>\n<td>E96<\/td>\n<td>96<\/td>\n<td>\u00b11%<\/td>\n<\/tr>\n<tr>\n<td>E192<\/td>\n<td>192<\/td>\n<td>\n<div>\n<div>\u00b10.5%, \u00b10.25%, \u00b10.1% (ultra precision)<\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p data-start=\"102\" data-end=\"341\">Standard Resistor Values in E6, E12, E24 Series\u00a0 are as<\/p>\n<table dir=\"ltr\" style=\"height: 396px;\" border=\"1\" width=\"931\" cellspacing=\"0\" cellpadding=\"0\" data-sheets-root=\"1\" data-sheets-baot=\"1\">\n<colgroup>\n<col width=\"100\" \/>\n<col width=\"100\" \/>\n<col width=\"100\" \/><\/colgroup>\n<tbody>\n<tr>\n<td><strong>Series (Tol.)<\/strong><\/td>\n<td><strong>Values per Decade<\/strong><\/td>\n<td>\n<div>\n<div><strong>Standard Values (\u03a9 from 1 to 10)<\/strong><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<tr>\n<td>E6 (\u00b120%)<\/td>\n<td>6<\/td>\n<td>\n<div>\n<div>1.0, 1.5, 2.2, 3.3, 4.7, 6.8<\/div>\n<\/div>\n<\/td>\n<\/tr>\n<tr>\n<td>E12 (\u00b110%)<\/td>\n<td>12<\/td>\n<td>\n<div>\n<div>1.0, 1.2, 1.5, 1.8, 2.2, 2.7, 3.3, 3.9, 4.7, 5.6, 6.8, 8.2<\/div>\n<\/div>\n<\/td>\n<\/tr>\n<tr>\n<td>E24 (\u00b15%)<\/td>\n<td>24<\/td>\n<td>\n<div>\n<div>1.0, 1.1, 1.2, 1.3, 1.5, 1.6, 1.8, 2.0, 2.2, 2.4, 2.7, 3.0, 3.3, 3.6, 3.9, 4.3, 4.7, 5.1, 5.6, 6.2, 6.8, 7.5, 8.2, 9.1<\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"markdown prose dark:prose-invert w-full break-words light markdown-new-styling\">\n<h2 data-start=\"973\" data-end=\"1254\"><span class=\"ez-toc-section\" id=\"1k_ohm_resistor_color_code\"><\/span>1k Ohm Resistor Color Code<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>\n<p data-start=\"107\" data-end=\"308\">A one-kilohm resistor can be identified using the standard <strong data-start=\"166\" data-end=\"197\">four-band color code system<\/strong>. This method makes it easy to determine resistance and tolerance without the need for measuring instruments.<\/p>\n<\/li>\n<li>\n<p data-start=\"107\" data-end=\"308\">Brown = 1 (first digit)<\/p>\n<\/li>\n<li>\n<p data-start=\"107\" data-end=\"308\">Black = 0 (second digit)<\/p>\n<\/li>\n<li>\n<p data-start=\"107\" data-end=\"308\">Red = multiplier of 100 (10\u00b2)<\/p>\n<\/li>\n<li>\n<p data-start=\"107\" data-end=\"308\">Gold = tolerance of \u00b15%<\/p>\n<\/li>\n<li>\n<p data-start=\"107\" data-end=\"308\">In this system, a <strong data-start=\"328\" data-end=\"345\">1 k\u03a9 resistor<\/strong> is represented by the color bands <strong data-start=\"380\" data-end=\"411\">brown, black, red, and gold<\/strong>:<\/p>\n<\/li>\n<li>\n<p data-start=\"107\" data-end=\"308\">This gives a resistance value of <strong data-start=\"568\" data-end=\"610\">1,000 \u03a9 (1 k\u03a9) with a tolerance of \u00b15%<\/strong>.<\/p>\n<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-4929\" src=\"https:\/\/www.flywing-tech.com\/blog\/wp-content\/uploads\/2025\/09\/1k-Ohm-Resistor-Color-Code.jpg\" alt=\"1k Ohm Resistor Color Code\" width=\"595\" height=\"366\" \/><\/p>\n<table dir=\"ltr\" style=\"height: 145px;\" border=\"1\" width=\"940\" cellspacing=\"0\" cellpadding=\"0\" data-sheets-root=\"1\" data-sheets-baot=\"1\">\n<colgroup>\n<col width=\"100\" \/>\n<col width=\"100\" \/>\n<col width=\"100\" \/><\/colgroup>\n<tbody>\n<tr>\n<td><strong>Band<\/strong><\/td>\n<td><strong>Color<\/strong><\/td>\n<td>\n<div>\n<div><strong>Digit\/Multiplier\/Tolerance<\/strong><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<tr>\n<td>1st Band<\/td>\n<td>Brown<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>2nd Band<\/td>\n<td>Black<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td>3rd Band<\/td>\n<td>Red<\/td>\n<td>Multiplier: 100<\/td>\n<\/tr>\n<tr>\n<td>4th Band<\/td>\n<td>Gold<\/td>\n<td>Tolerance: \u00b15%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span class=\"ez-toc-section\" id=\"10k10k_ohm_resistor_color_code\"><\/span>10K\/10K Ohm Resistor Color Code<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-4930\" src=\"https:\/\/www.flywing-tech.com\/blog\/wp-content\/uploads\/2025\/09\/10K-Ohm-Resistor-Color-Code.jpg\" alt=\"10K Ohm Resistor Color Code\" width=\"576\" height=\"323\" \/><\/p>\n<\/div>\n<div class=\"markdown prose dark:prose-invert w-full break-words light markdown-new-styling\">\n<table dir=\"ltr\" style=\"height: 81px;\" border=\"1\" width=\"934\" cellspacing=\"0\" cellpadding=\"0\" data-sheets-root=\"1\" data-sheets-baot=\"1\">\n<colgroup>\n<col width=\"100\" \/>\n<col width=\"100\" \/>\n<col width=\"100\" \/><\/colgroup>\n<tbody>\n<tr>\n<td><strong>Band<\/strong><\/td>\n<td><strong>Color<\/strong><\/td>\n<td><strong>Value<\/strong><\/td>\n<\/tr>\n<tr>\n<td>1st<\/td>\n<td>Brown<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>2nd<\/td>\n<td>Black<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td>3rd<\/td>\n<td>Orang<\/td>\n<td>1000<\/td>\n<\/tr>\n<tr>\n<td>4th<\/td>\n<td>Gold<\/td>\n<td>\u00b15%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p data-start=\"146\" data-end=\"372\">The calculation of a <strong data-start=\"167\" data-end=\"185\">10 k\u03a9 resistor<\/strong> using the color code system is straightforward. This resistor has the color bands <strong data-start=\"268\" data-end=\"302\">brown, black, orange, and gold<\/strong>, which make it easy to determine its value with a tolerance of \u00b15%.<\/p>\n<ul data-start=\"374\" data-end=\"497\">\n<li data-start=\"374\" data-end=\"401\">\n<p data-start=\"376\" data-end=\"401\">Brown = 1 (first digit)<\/p>\n<\/li>\n<li data-start=\"402\" data-end=\"430\">\n<p data-start=\"404\" data-end=\"430\">Black = 0 (second digit)<\/p>\n<\/li>\n<li data-start=\"431\" data-end=\"469\">\n<p data-start=\"433\" data-end=\"469\">Orange = multiplier of 1,000 (10\u00b3)<\/p>\n<\/li>\n<li data-start=\"470\" data-end=\"497\">\n<p data-start=\"472\" data-end=\"497\">Gold = tolerance of \u00b15%<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"499\" data-end=\"574\">This gives a resistance value of <strong data-start=\"532\" data-end=\"571\">10,000 \u03a9 (10 k\u03a9) with \u00b15% tolerance<\/strong>.<\/p>\n<h3 data-start=\"581\" data-end=\"627\">Resistance Measurement with a Multimeter<\/h3>\n<p data-start=\"629\" data-end=\"820\">A multimeter provides a simple and accurate method for measuring resistance. For example, when measuring a 1 k\u03a9 resistor, set the meter to ohm mode, typically using the 2k or 20k range.<\/p>\n<p data-start=\"629\" data-end=\"820\">Moreover, for an accurate reading, always disconnect the resistor from the circuit before testing.. Connect the meter probes to each end of the resistor\u2014polarity does not matter for standard resistors.<\/p>\n<p data-start=\"1016\" data-end=\"1122\">A properly working <strong data-start=\"1035\" data-end=\"1052\">1 k\u03a9 resistor<\/strong> should measure close to 1,000 \u03a9, depending on its tolerance rating:<\/p>\n<ul data-start=\"1124\" data-end=\"1294\">\n<li data-start=\"1124\" data-end=\"1208\">\n<p data-start=\"1126\" data-end=\"1208\">With a <strong data-start=\"1133\" data-end=\"1150\">\u00b15% tolerance<\/strong> (gold band): value will range from <strong data-start=\"1186\" data-end=\"1206\">950 \u03a9 to 1,050 \u03a9<\/strong><\/p>\n<\/li>\n<li data-start=\"1209\" data-end=\"1294\">\n<p data-start=\"1211\" data-end=\"1294\">With a <strong data-start=\"1218\" data-end=\"1235\">\u00b11% tolerance<\/strong> (brown band): value will range from <strong data-start=\"1272\" data-end=\"1292\">990 \u03a9 to 1,010 \u03a9<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1296\" data-end=\"1366\">In fact, these values can also be confirmed using the resistor\u2019s color bands.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"practical_resistor_selection\"><\/span>Practical Resistor Selection<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"129\" data-end=\"372\">Until now, we have studied resistor color codes and charts in theory. However, practical examples make them easier to understand. Therefore, the following applications demonstrate how resistor color codes and proper resistor selection work in real circuits<\/p>\n<h3 data-start=\"379\" data-end=\"402\">Pull-Up Resistors<\/h3>\n<p data-start=\"124\" data-end=\"404\">A pull-up resistor keeps a digital input at a high level (logic 1) when no active signal is present. Therefore, engineers choose a value that is high enough to limit current during a low input state, yet low enough to maintain a strong high level without introducing noise.<\/p>\n<p data-start=\"406\" data-end=\"717\">In most cases, a 10 k\u03a9 resistor works well for pull-up circuits. For example, in a 5 V logic circuit, a 10 k\u03a9 pull-up allows 0.5 mA of current when the line is pulled low. At the same time, it consumes very little power during a high input state, thereby ensuring a defined logic level and noise immunity.<\/p>\n<p data-start=\"719\" data-end=\"874\">Consequently, the 10 k\u03a9 pull-up is widely considered the default choice because it balances leakage current and noise for both 5 V and 3.3 V systems.<\/p>\n<p data-start=\"876\" data-end=\"1080\">Nevertheless, some special circuits, such as I\u00b2C buses, require stronger (lower-value) pull-ups to achieve faster rise times. However, these pull-ups also draw higher current due to bus capacitance.<\/p>\n<p data-start=\"1082\" data-end=\"1248\">In addition, microcontrollers often include internal pull-ups ranging from 20 k\u03a9 to 50 k\u03a9, which save power but are not suitable for speed-critical applications<\/p>\n<h3 data-start=\"404\" data-end=\"672\">Voltage Dividers<\/h3>\n<p data-start=\"1511\" data-end=\"1666\">Generally, a voltage divider uses two resistors to produce an output voltage, and therefore the result is a fraction of the input voltage. The formula for calculating the output is:<\/p>\n<p style=\"text-align: left;\">Vout=Vin\u00d7R2R1+R2 $$V_{out} = V_{in} \\times \\frac{R2}{R1 + R2}$$ <span aria-hidden=\"true\">Vout\u200b=Vin\u200b\u00d7R1+R2R2\u00a0<\/span><\/p>\n<p data-start=\"1720\" data-end=\"1902\">Here, <span class=\"katex\"><span class=\"katex-mathml\">VoutV_{out}<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">V<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">o<\/span><span class=\"mord mathnormal mtight\">u<\/span><span class=\"mord mathnormal mtight\">t<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> is measured across <span class=\"katex\"><span class=\"katex-mathml\">R2R2<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord mathnormal\">R<\/span><span class=\"mord\">2<\/span><\/span><\/span><\/span>.<\/p>\n<h4 data-start=\"1720\" data-end=\"1902\">How to Design a Voltage Divider<\/h4>\n<p data-start=\"1720\" data-end=\"1902\">To design a voltage divider, first start with the required voltage ratio, and then, afterward, select real resistor values from the standard E-series<\/p>\n<p data-start=\"1720\" data-end=\"1902\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-4932\" src=\"https:\/\/www.flywing-tech.com\/blog\/wp-content\/uploads\/2025\/09\/Voltage-Dividers-1.jpg\" alt=\"Voltage Dividers\" width=\"239\" height=\"418\" \/><\/p>\n<p data-start=\"113\" data-end=\"225\">Suppose you have a <strong data-start=\"132\" data-end=\"147\">12 V supply<\/strong>, but the circuit requires <strong data-start=\"174\" data-end=\"181\">5 V<\/strong> for the ADC input. The required ratio is:<\/p>\n<p><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\">VoutVin=512\u22480.4167 $$\\frac{V_{out}}{V_{in}} = \\frac{5}{12} \\approx 0.4167 $$ <\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"mord mathnormal\">V<\/span><span class=\"msupsub\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">in<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"mord mathnormal\">V<\/span><span class=\"msupsub\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">o<\/span><span class=\"mord mathnormal mtight\">u<\/span><span class=\"mord mathnormal mtight\">t<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\">125<\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">\u2248<\/span><\/span><span class=\"base\"><span class=\"mord\">0.4167<\/span><\/span><\/span><\/span><\/span><\/p>\n<p data-start=\"289\" data-end=\"409\">To achieve this, you can pair <strong data-start=\"319\" data-end=\"325\">R1<\/strong> and <strong data-start=\"330\" data-end=\"336\">R2<\/strong>. The easiest method is to select one resistor and calculate the other.<\/p>\n<p data-start=\"411\" data-end=\"480\">Let\u2019s choose <strong data-start=\"424\" data-end=\"439\">R2 = 4.7 k\u03a9<\/strong>. Applying the voltage divider formula:<\/p>\n<p><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\">0.4167=R2R1+R2 $$0.4167 = \\frac{R2}{R1 + R2} $$ <\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">0.4167<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"mord mathnormal\">R<\/span>1<span class=\"mbin\">+<\/span><span class=\"mord mathnormal\">R<\/span>2<span class=\"mord mathnormal\">R<\/span>2<\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p data-start=\"519\" data-end=\"545\">Substituting the values:<\/p>\n<p><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\">0.4167=4.7R1+4.7 $$0.4167 = \\frac{4.7}{R1 + 4.7}$$<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\">0.4167<\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"mord mathnormal\">R<\/span>1<span class=\"mbin\">+<\/span>4.74.7<\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p data-start=\"586\" data-end=\"702\">Solving the equation gives <strong data-start=\"613\" data-end=\"628\">R1 \u2248 6.6 k\u03a9<\/strong>. The nearest standard E12 resistor values are <strong data-start=\"675\" data-end=\"685\">6.8 k\u03a9<\/strong> or <strong data-start=\"689\" data-end=\"699\">6.2 k\u03a9<\/strong>.<\/p>\n<p data-start=\"704\" data-end=\"776\">Using <strong data-start=\"710\" data-end=\"725\">R1 = 6.8 k\u03a9<\/strong> and <strong data-start=\"730\" data-end=\"745\">R2 = 4.7 k\u03a9<\/strong>, the output voltage becomes:<\/p>\n<p><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\">Vout=12\u00d74.76.8+4.7\u22484.94 V $$V_{out} = 12 \\times \\frac{4.7}{6.8 + 4.7} \\approx 4.94 \\text{ V}$$ <\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mord mathnormal\">V<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\"><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\">o<\/span><span class=\"mord mathnormal mtight\">u<\/span><span class=\"mord mathnormal mtight\">t<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">=<\/span><\/span><span class=\"base\"><span class=\"mord\">12<\/span><span class=\"mbin\">\u00d7<\/span><\/span><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\">6.8<span class=\"mbin\">+<\/span>4.74.7<\/span><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><span class=\"mrel\">\u2248<\/span><\/span><span class=\"base\"><span class=\"mord\">4.94<\/span><span class=\"mord text\"><span class=\"mord\"> V<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p data-start=\"852\" data-end=\"1020\">This result is very close to 5 V and falls within the tolerance range for most ADCs. Both 6.8 k\u03a9 and 4.7 k\u03a9 are easy to obtain from the <strong data-start=\"988\" data-end=\"1017\">E12 series (5% tolerance)<\/strong>.<\/p>\n<p data-start=\"209\" data-end=\"445\">If you want a more precise value of exactly 5 V, you can select resistors from the E96 series (1% tolerance), such as 6.65 k\u03a9 for R1. Nevertheless, in many applications, E12 values still provide accuracy within acceptable limits.<\/p>\n<p data-start=\"447\" data-end=\"718\">In addition, the most important factor in designing a voltage divider is the current flowing through the resistors. Typically, designers use resistor pairs in the tens of kilo-ohms range; as a result, they minimize unnecessary power loss while maintaining stability.<\/p>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"1277\" data-end=\"1604\">Resistors come in different types, each designed to offer a specific resistance value. On the one hand, fixed resistors have constant resistance, while on the other hand, variable resistors allow for adjustment. Moreover, without a good understanding of resistor color coding, it can be challenging to determine the correct value, especially for variable resistors<\/p>\n<p data-start=\"1606\" data-end=\"1866\">Engineers use the <strong data-start=\"1624\" data-end=\"1654\">resistor color code system<\/strong> to identify resistance values. Resistors may have <strong data-start=\"1705\" data-end=\"1733\">four, five, or six bands<\/strong>, with each color representing a number or multiplier. Mastering this code is essential for accurate readings in <a href=\"https:\/\/www.flywing-tech.com\/blog\/how-to-test-every-electronic-component-at-home-diy-testing-guide-part-1\/\" target=\"_blank\" rel=\"noopener\">electronic circuits.<\/a><\/p>\n<h2 data-start=\"1606\" data-end=\"1866\"><a href=\"https:\/\/www.flywing-tech.com\/category\/kits\/resistor-kits-f605eb80\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-4973\" src=\"https:\/\/www.flywing-tech.com\/blog\/wp-content\/uploads\/2025\/09\/resistor-kits.png\" alt=\"resistor kits flywing Inquiry\" width=\"2160\" height=\"798\" \/><\/a><\/h2>\n<h2 class=\"title\"><span class=\"ez-toc-section\" id=\"frequently_asked_questions_faq\"><\/span>Frequently Asked Questions [FAQ]<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 style=\"text-align: left;\" data-start=\"1606\" data-end=\"1866\"><span style=\"color: #ff6221;\"><strong data-start=\"1883\" data-end=\"1927\">Who invented the resistor color code?<\/strong><\/span><\/h3>\n<p style=\"text-align: left;\" data-start=\"1606\" data-end=\"1866\">The <strong data-start=\"1941\" data-end=\"1982\">Radio Manufacturers Association (RMA)<\/strong> introduced the resistor color code in the 1920s.<\/p>\n<h3 data-start=\"2033\" data-end=\"2184\"><span style=\"color: #ff6221;\"><strong data-start=\"2033\" data-end=\"2076\">How does a resistor color code work?<\/strong><\/span><\/h3>\n<p data-start=\"2033\" data-end=\"2184\">The color bands indicate significant digits, a multiplier, and tolerance. In a five-band resistor:<\/p>\n<ul>\n<li data-start=\"2187\" data-end=\"2238\">The first three bands represent significant digits,<\/li>\n<li data-start=\"2241\" data-end=\"2270\">The fourth is the multiplier,<\/li>\n<li data-start=\"2273\" data-end=\"2303\">The fifth indicates tolerance.<\/li>\n<\/ul>\n<h3 data-start=\"2305\" data-end=\"2530\"><span style=\"color: #ff6221;\"><strong data-start=\"2305\" data-end=\"2346\">Why do resistors come color-coded?<\/strong><\/span><\/h3>\n<p data-start=\"2305\" data-end=\"2530\">Therefore, due to their small size, resistors cannot have printed numbers.\u00a0 Color coding allows manufacturers to clearly communicate resistance values and tolerances in a compact format.<\/p>\n<h3 data-start=\"2532\" data-end=\"2738\"><span style=\"color: #ff6221;\"><strong data-start=\"2532\" data-end=\"2582\">How can I remember the resistor color code?<\/strong><\/span><\/h3>\n<p data-start=\"2532\" data-end=\"2738\">A popular mnemonic is: <strong data-start=\"2617\" data-end=\"2668\">\u201cBB ROY of Great Britain had a very good wife.\u201d<\/strong><br data-start=\"2668\" data-end=\"2671\" \/>Each capital letter represents a color and its corresponding digit:<\/p>\n<ul>\n<li data-start=\"2741\" data-end=\"2888\">B = Black (0), B = Brown (1), R = Red (2), O = Orange (3), Y = Yellow (4), G = Green (5), B = Blue (6), V = Violet (7), G = Grey (8), W = White (9)<\/li>\n<\/ul>\n<h3 data-start=\"2890\" data-end=\"3046\"><span style=\"color: #ff6221;\"><strong data-start=\"2890\" data-end=\"2944\">What is the color code for a 1000-ohm resistor?<\/strong><\/span><\/h3>\n<p data-start=\"2890\" data-end=\"3046\">A 1000 \u03a9 resistor typically uses a <strong data-start=\"2989\" data-end=\"3010\">4-band color code<\/strong>: <strong data-start=\"3014\" data-end=\"3044\">Brown \u2013 Black \u2013 Red \u2013 Gold<\/strong><\/p>\n<ul>\n<li data-start=\"3049\" data-end=\"3060\">Brown = 1<\/li>\n<li data-start=\"3063\" data-end=\"3074\">Black = 0<\/li>\n<li data-start=\"3077\" data-end=\"3089\">Red = \u00d7100<\/li>\n<li data-start=\"3092\" data-end=\"3112\">Gold = \u00b15% tolerance<\/li>\n<\/ul>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Resistors are one of the most important components in electronic circuits, devices, and projects. They have two terminals, and their primary role is to limit or regulate the flow of current within a circuit. If you look closely at a resistor, you\u2019ll notice different colored bands printed on its body. These are resistor color codes, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4972,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[672,380],"tags":[674,677,675,673,678,676],"class_list":["post-4569","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-resistor-color-code-guides","category-technical-tutorial","tag-color-code","tag-electronic-components","tag-electronics","tag-resistor","tag-resistor-guide","tag-smd-resistor"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\r\n<title>How to Read Resistor Color Code: Chart, Examples - Fly-Wing<\/title>\r\n<meta name=\"description\" content=\"The resistor color code is basically a tool that helps us find the resistance value of any resistor by checking different\" \/>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\r\n<link rel=\"canonical\" href=\"https:\/\/www.flywing-tech.com\/blog\/resistor-color-code\/\" \/>\r\n<meta property=\"og:locale\" content=\"en_US\" \/>\r\n<meta property=\"og:type\" content=\"article\" \/>\r\n<meta property=\"og:title\" content=\"How to Read Resistor Color Code: Chart, Examples - 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