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Calculated Shard: 17 (from laksa106)

2. Crawled Status Check

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curl -X POST \
  'http://laksa017.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.makeuseof.com/what-are-standard-resistor-values/\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.makeuseof.com/what-are-standard-resistor-values/\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.makeuseof.com\/what-are-standard-resistor-values\/","crawl_time":1756056983,"first_indexed_time":1674324045,"http_code":200,"src_unparsed":"com,makeuseof!www,\/what-are-standard-resistor-values\/ s443","src_root_hash":"8015183094204371817","history_drop_reason":null,"meta_title":"What Are the Standard Resistor Values?","meta_descriptions":["It’s essential to use the correct value resistors for your electronics projects. Find out all about standard resistor values."],"attrs_boilerpipe_text":"Choosing the correct resistor for any given application requires a little bit of background knowledge. Understanding the ohmage of your resistor is crucial, but you should also have a grasp of standard resistor values. But what are the most common resistor values and what do they mean? \n                        What Is a Standard Resistor Value?\n                First defined in 1952 by the IEC (International Electrotechnical Commission), resistor values aim to standardize the resistance and tolerance of resistors across the world. This makes it easier for consumers and electrical engineers to pick the right components for their circuits. It also provides manufacturers with a template to follow. Using resistors of the wrong values can lead to unexpected results within a circuit. For example, if you use a resistor with poor tolerances with a sensitive LED, you run the risk of too much power making it to the LED. This can cause circuits to fail and even damage components. A standard surface-mount resistor’s ohmage and tolerance can be found by  reading resistor color codes . \n                        Common Standard Resistor Values\n                Preferred values, also known as E-series, are split into groups based on their tolerance. The tolerance of a resistor describes the potential difference between its rated resistance and its actual resistance. For example, an E3 series resistor has a tolerance of 40%. This means that an E3 resistor with a resistance rating of 100 ohms will actually have a resistance between 60 and 140 ohms. Each series is split further into a set of resistance values. \n            E Series & Resistance Values\n     Each E series has its own set of resistance values that sit between one and ten, with the number of steps (on a logarithmic scale) being equal to the E number. These values represent the different ohmage options available within the series, and they can be multiplied by 10, 100, 1000, etc. for the full resistance range. For example, E3 resistors have the following three values; 1.0, 2.2, and 4.7. This means that E3 resistors can have a resistance of 1Ω, 2.2Ω, or 4.7Ω, but they can also have resistances of 10Ω, 22Ω, and 47Ω, or 100Ω, 220Ω, and 470Ω. This continues into millions of ohms. \n            E6 Series Tolerances & Resistance Values\n     E6 series resistors have a tolerance of 20% and the following six values. \n                                        1.0, 1.5, 2.2, 3.3, 4.7, and 6.8\n                         \n            E12 Series Tolerances & Resistance Values\n     E12 series resistors have a tolerance of 10% and the following 12 values. \n                                        1.0, 1.2, 1.5, 1.8, 2.2, 2.7, 3.3, 3.9, 4.7, 5.6, 6.8, and 8.2\n                         \n            E24 Series Tolerances & Resistance Values\n     E24 series resistors have a tolerance of 5% and the following 24 values. \n                                        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, and 9.1\n                         \n            E48 Series Tolerances & Resistance Values\n     E48 series resistors have a tolerance of 2% and the following 48 values. \n                                        1.00, 1.05, 1.10, 1.15, 1.21, 1.27, 1.33, 1.40, 1.47, 1.54, 1.62, 1.69, 1.78, 1.87, 1.96, 2.05, 2.15, 2.26, 2.37, 2.49, 2.61, 2.74, 2.87, 3.01, 3.16, 3.32, 3.48, 3.65, 3.83, 4.02, 4.22, 4.42, 4.64, 4.87, 5.11, 5.36, 5.62, 5.90, 6.19, 6.49, 6.81, 7.15, 7.50, 7.87, 8.25, 8.66, 9.09, and 9.53\n                         \n            E96 Series Tolerances & Resistance Values\n     E96 series resistors have a tolerance of 1% and the following 96 values. \n                                        1.00, 1.02, 1.05, 1.07, 1.10, 1.13, 1.15, 1.18, 1.21, 1.24, 1.27, 1.30, 1.33, 1.37, 1.40, 1.43, 1.47, 1.50, 1.54, 1.58, 1.62, 1.65, 1.69, 1.74, 1.78, 1.82, 1.87, 1.91, 1.96, 2.00, 2.05, 2.10, 2.15, 2.21, 2.26, 2.32, 2.37, 2.43, 2.49, 2.55, 2.61, 2.67, 2.74, 2.80, 2.87, 2.94, 3.01, 3.09, 3.16, 3.24, 3.32, 3.40, 3.48, 3.57, 3.65, 3.74, 3.83, 3.92, 4.02, 4.12, 4.22, 4.32, 4.42, 4.53, 4.64, 4.75, 4.87, 4.99, 5.11, 5.23, 5.36, 5.49, 5.62, 5.76, 5.90, 6.04, 6.19, 6.34, 6.49, 6.65, 6.81, 6.98, 7.15, 7.32, 7.50, 7.68, 7.87, 8.06, 8.25, 8.45, 8.66, 8.87, 9.09, 9.31, 9.53, and 9.76\n                         \n            E192 Series Tolerances & Resistance Values\n     E192 series resistors have a tolerance of 0.5% or lower and the following 192 values. \n                                        1.00, 1.01, 1.02, 1.04, 1.05, 1.06, 1.07, 1.09, 1.10, 1.11, 1.13, 1.14, 1.15, 1.17, 1.18, 1.20, 1.21, 1.23, 1.24, 1.26, 1.27, 1.29, 1.30, 1.32, 1.33, 1.35, 1.37, 1.38, 1.40, 1.42, 1.43, 1.45, 1.47, 1.49, 1.50, 1.52, 1.54, 1.56, 1.58, 1.60, 1.62, 1.64, 1.65, 1.67, 1.69, 1.72, 1.74, 1.76, 1.78, 1.80, 1.82, 1.84, 1.87, 1.89, 1.91, 1.93, 1.96, 1.98, 2.00, 2.03, 2.05, 2.08, 2.10, 2.13, 2.15, 2.18, 2.21, 2.23, 2.26, 2.29, 2.32, 2.34, 2.37, 2.40, 2.43, 2.46, 2.49, 2.52, 2.55, 2.58, 2.61, 2.64, 2.67, 2.71, 2.74, 2.77, 2.80, 2.84, 2.87, 2.91, 2.94, 2.98, 3.01, 3.05, 3.09, 3.12, 3.16, 3.20, 3.24, 3.28, 3.32, 3.36, 3.40, 3.44, 3.48, 3.52, 3.57, 3.61, 3.65, 3.70, 3.74, 3.79, 3.83, 3.88, 3.92, 3.97, 4.02, 4.07, 4.12, 4.17, 4.22, 4.27, 4.32, 4.37, 4.42, 4.48, 4.53, 4.59, 4.64, 4.70, 4.75, 4.81, 4.87, 4.93, 4.99, 5.05, 5.11, 5.17, 5.23, 5.30, 5.36, 5.42, 5.49, 5.56, 5.62, 5.69, 5.76, 5.83, 5.90, 5.97, 6.04, 6.12, 6.19, 6.26, 6.34, 6.42, 6.49, 6.57, 6.65, 6.73, 6.81, 6.90, 6.98, 7.06, 7.15, 7.23, 7.32, 7.41, 7.50, 7.59, 7.68, 7.77, 7.87, 7.96, 8.06, 8.16, 8.25, 8.35, 8.45, 8.56, 8.66, 8.76, 8.87, 8.98, 9.09, 9.20, 9.31, 9.42, 9.53, 9.65, 9.76, and 9.88\n                         \n                        Choosing the Correct Resistor Value\n                The value you choose for your resistor should be based on a couple of factors. Price is important, with higher E series resistors generally having a higher cost due to their lower tolerance (i.e. higher accuracy of ohmage value). Alongside this, you also need to consider the requirements of your circuit.","attrs_markdown":"Menu\n\n[![MUO logo](https:\/\/static0.makeuseofimages.com\/assets\/images\/muo-logo-full-colored-light.svg?v=3.0)](https:\/\/www.makeuseof.com\/)\n\nSign in now\n\nClose\n\n- - PC & Mobile Submenu\n    - [Windows](https:\/\/www.makeuseof.com\/category\/windows\/)\n    - [Android](https:\/\/www.makeuseof.com\/category\/google-android\/)\n    - [iPhone](https:\/\/www.makeuseof.com\/category\/ios\/)\n  - Technical Submenu\n    - [Tech Explained](https:\/\/www.makeuseof.com\/category\/technology-explained\/)\n    - [Security](https:\/\/www.makeuseof.com\/category\/security\/)\n  - Lifestyle Submenu\n    - [Productivity](https:\/\/www.makeuseof.com\/category\/productivity\/)\n    - [Creative](https:\/\/www.makeuseof.com\/category\/creative\/)\n  - [Entertainment](https:\/\/www.makeuseof.com\/category\/entertainment\/)\n    Submenu\n    - [Streaming](https:\/\/www.makeuseof.com\/category\/streaming\/)\n    - [Internet](https:\/\/www.makeuseof.com\/category\/web-based\/)\n  - [Home](https:\/\/www.makeuseof.com\/category\/home\/)\n  - [News](https:\/\/www.makeuseof.com\/category\/news\/)\n  - [Free Cheat Sheets](https:\/\/www.makeuseof.com\/tag\/cheat-sheet\/)\n\n- [Sign in](https:\/\/www.makeuseof.com\/what-are-standard-resistor-values\/)\n- [Newsletter](https:\/\/www.makeuseof.com\/page\/newsletter\/)\n\n[Windows 11](https:\/\/www.makeuseof.com\/tag\/windows-11\/)\n\n[ChatGPT](https:\/\/www.makeuseof.com\/tag\/chatgpt\/)\n\n[iPhone Help](https:\/\/www.makeuseof.com\/tag\/iphone-troubleshooting\/)\n\n[Facebook Help](https:\/\/www.makeuseof.com\/tag\/facebook\/)\n\n[Avoiding Scams](https:\/\/www.makeuseof.com\/tag\/scam\/)\n\n[Emojis Explained](https:\/\/www.makeuseof.com\/top-emojis-explained-cheat-sheet\/)\n\n[Free Movie Streaming](https:\/\/www.makeuseof.com\/free-movie-streaming-sites-no-sign-up\/)\n\nClose\n\n# What Are the Standard Resistor Values?\n![4](https:\/\/static1.makeuseofimages.com\/wordpress%2Fwp-content%2Fauthors%2F6102b1b2dcbb7-pp.jpg?fit=crop&w=90&h=90)\n\nBy  [Samuel L. Garbett](https:\/\/www.makeuseof.com\/author\/samuel-garbett\/)\n\nPublished Jan 21, 2023\n\nFollow\n\nFollowed\n\nLike\n\nLink copied to clipboard\n\n### Related\n[![Close up end shot of a plastic liner roll](https:\/\/static1.makeuseofimages.com\/wordpress\/wp-content\/uploads\/wm\/2025\/08\/close-up-end-shot-of-a-plastic-liner-roll.jpeg?q=49&fit=crop&w=120&h=80&dpr=2)](https:\/\/www.makeuseof.com\/simple-change-for-safer-kitchen\/)\n\n##### [My Kitchen Feels Cleaner and Safer After This One Change](https:\/\/www.makeuseof.com\/simple-change-for-safer-kitchen\/ \"My Kitchen Feels Cleaner and Safer After This One Change\")\n\n[![cropped-ring flood sensor next to floor drain in basement](https:\/\/static1.makeuseofimages.com\/wordpress\/wp-content\/uploads\/wm\/2025\/08\/cropped-ring-flood-sensor-next-to-floor-drain-1.jpeg?q=49&fit=crop&w=120&h=80&dpr=2)](https:\/\/www.makeuseof.com\/smart-water-leak-detector-saved-my-basement\/)\n\n##### [This Is the Best \\$35 I’ve Ever Spent on Home Safety](https:\/\/www.makeuseof.com\/smart-water-leak-detector-saved-my-basement\/ \"This Is the Best $35 I’ve Ever Spent on Home Safety\")\n\n[![Employee Spreadsheet featured ](https:\/\/static1.makeuseofimages.com\/wordpress\/wp-content\/uploads\/2024\/10\/excel-logo-on-laptop-muo-featured.png?q=49&fit=crop&w=120&h=80&dpr=2)](https:\/\/www.makeuseof.com\/i-used-to-hate-cleaning-excel-data-but-not-anymore\/)\n\n##### [I Used to Hate Cleaning Excel Data—Now I Look Forward to It](https:\/\/www.makeuseof.com\/i-used-to-hate-cleaning-excel-data-but-not-anymore\/ \"I Used to Hate Cleaning Excel Data—Now I Look Forward to It\")\n\n[Sign in to your MUO account]()\n\n![resistors in a breadboard](https:\/\/static1.makeuseofimages.com\/wordpress\/wp-content\/uploads\/2023\/01\/common-resistor-values.jpg)\n\nNAR - Image from [Unsplash](https:\/\/unsplash.com\/photos\/afZVP8xbbw0)\n\nChoosing the correct resistor for any given application requires a little bit of background knowledge. Understanding the ohmage of your resistor is crucial, but you should also have a grasp of standard resistor values. But what are the most common resistor values and what do they mean?\n\n## What Is a Standard Resistor Value?\n![row of soldered resistors](https:\/\/static1.makeuseofimages.com\/wordpress\/wp-content\/uploads\/2023\/01\/standard-resistor-values.jpg?q=50&fit=crop&w=825&dpr=1.5)\n\nNAR - Image from [Unsplash](https:\/\/unsplash.com\/photos\/2GNTBW7zPDU)\n\nFirst defined in 1952 by the IEC (International Electrotechnical Commission), resistor values aim to standardize the resistance and tolerance of resistors across the world. This makes it easier for consumers and electrical engineers to pick the right components for their circuits. It also provides manufacturers with a template to follow.\n\nUsing resistors of the wrong values can lead to unexpected results within a circuit. For example, if you use a resistor with poor tolerances with a sensitive LED, you run the risk of too much power making it to the LED. This can cause circuits to fail and even damage components. A standard surface-mount resistor’s ohmage and tolerance can be found by [reading resistor color codes](https:\/\/www.makeuseof.com\/how-to-read-resistor-color-codes\/).\n\n## Common Standard Resistor Values\n![resistors in a toolbox](https:\/\/static1.makeuseofimages.com\/wordpress\/wp-content\/uploads\/2023\/01\/resistor-e-series.jpg?q=50&fit=crop&w=825&dpr=1.5)\n\nNAR - Image from [Unsplash](https:\/\/unsplash.com\/photos\/fReANpVza_Q)\n\nPreferred values, also known as E-series, are split into groups based on their tolerance. The tolerance of a resistor describes the potential difference between its rated resistance and its actual resistance.\n\nFor example, an E3 series resistor has a tolerance of 40%. This means that an E3 resistor with a resistance rating of 100 ohms will actually have a resistance between 60 and 140 ohms. Each series is split further into a set of resistance values.\n\n### E Series & Resistance Values\nEach E series has its own set of resistance values that sit between one and ten, with the number of steps (on a logarithmic scale) being equal to the E number. These values represent the different ohmage options available within the series, and they can be multiplied by 10, 100, 1000, etc. for the full resistance range.\n\nFor example, E3 resistors have the following three values; 1.0, 2.2, and 4.7. This means that E3 resistors can have a resistance of 1Ω, 2.2Ω, or 4.7Ω, but they can also have resistances of 10Ω, 22Ω, and 47Ω, or 100Ω, 220Ω, and 470Ω. This continues into millions of ohms.\n\n### E6 Series Tolerances & Resistance Values\nE6 series resistors have a tolerance of 20% and the following six values.\n\n- 1\\.0, 1.5, 2.2, 3.3, 4.7, and 6.8\n### E12 Series Tolerances & Resistance Values\nE12 series resistors have a tolerance of 10% and the following 12 values.\n\n- 1\\.0, 1.2, 1.5, 1.8, 2.2, 2.7, 3.3, 3.9, 4.7, 5.6, 6.8, and 8.2\n### E24 Series Tolerances & Resistance Values\nE24 series resistors have a tolerance of 5% and the following 24 values.\n\n- 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, and 9.1\n### E48 Series Tolerances & Resistance Values\nE48 series resistors have a tolerance of 2% and the following 48 values.\n\n- 1\\.00, 1.05, 1.10, 1.15, 1.21, 1.27, 1.33, 1.40, 1.47, 1.54, 1.62, 1.69, 1.78, 1.87, 1.96, 2.05, 2.15, 2.26, 2.37, 2.49, 2.61, 2.74, 2.87, 3.01, 3.16, 3.32, 3.48, 3.65, 3.83, 4.02, 4.22, 4.42, 4.64, 4.87, 5.11, 5.36, 5.62, 5.90, 6.19, 6.49, 6.81, 7.15, 7.50, 7.87, 8.25, 8.66, 9.09, and 9.53\n### E96 Series Tolerances & Resistance Values\nE96 series resistors have a tolerance of 1% and the following 96 values.\n\n- 1\\.00, 1.02, 1.05, 1.07, 1.10, 1.13, 1.15, 1.18, 1.21, 1.24, 1.27, 1.30, 1.33, 1.37, 1.40, 1.43, 1.47, 1.50, 1.54, 1.58, 1.62, 1.65, 1.69, 1.74, 1.78, 1.82, 1.87, 1.91, 1.96, 2.00, 2.05, 2.10, 2.15, 2.21, 2.26, 2.32, 2.37, 2.43, 2.49, 2.55, 2.61, 2.67, 2.74, 2.80, 2.87, 2.94, 3.01, 3.09, 3.16, 3.24, 3.32, 3.40, 3.48, 3.57, 3.65, 3.74, 3.83, 3.92, 4.02, 4.12, 4.22, 4.32, 4.42, 4.53, 4.64, 4.75, 4.87, 4.99, 5.11, 5.23, 5.36, 5.49, 5.62, 5.76, 5.90, 6.04, 6.19, 6.34, 6.49, 6.65, 6.81, 6.98, 7.15, 7.32, 7.50, 7.68, 7.87, 8.06, 8.25, 8.45, 8.66, 8.87, 9.09, 9.31, 9.53, and 9.76\n### E192 Series Tolerances & Resistance Values\nE192 series resistors have a tolerance of 0.5% or lower and the following 192 values.\n\n- 1\\.00, 1.01, 1.02, 1.04, 1.05, 1.06, 1.07, 1.09, 1.10, 1.11, 1.13, 1.14, 1.15, 1.17, 1.18, 1.20, 1.21, 1.23, 1.24, 1.26, 1.27, 1.29, 1.30, 1.32, 1.33, 1.35, 1.37, 1.38, 1.40, 1.42, 1.43, 1.45, 1.47, 1.49, 1.50, 1.52, 1.54, 1.56, 1.58, 1.60, 1.62, 1.64, 1.65, 1.67, 1.69, 1.72, 1.74, 1.76, 1.78, 1.80, 1.82, 1.84, 1.87, 1.89, 1.91, 1.93, 1.96, 1.98, 2.00, 2.03, 2.05, 2.08, 2.10, 2.13, 2.15, 2.18, 2.21, 2.23, 2.26, 2.29, 2.32, 2.34, 2.37, 2.40, 2.43, 2.46, 2.49, 2.52, 2.55, 2.58, 2.61, 2.64, 2.67, 2.71, 2.74, 2.77, 2.80, 2.84, 2.87, 2.91, 2.94, 2.98, 3.01, 3.05, 3.09, 3.12, 3.16, 3.20, 3.24, 3.28, 3.32, 3.36, 3.40, 3.44, 3.48, 3.52, 3.57, 3.61, 3.65, 3.70, 3.74, 3.79, 3.83, 3.88, 3.92, 3.97, 4.02, 4.07, 4.12, 4.17, 4.22, 4.27, 4.32, 4.37, 4.42, 4.48, 4.53, 4.59, 4.64, 4.70, 4.75, 4.81, 4.87, 4.93, 4.99, 5.05, 5.11, 5.17, 5.23, 5.30, 5.36, 5.42, 5.49, 5.56, 5.62, 5.69, 5.76, 5.83, 5.90, 5.97, 6.04, 6.12, 6.19, 6.26, 6.34, 6.42, 6.49, 6.57, 6.65, 6.73, 6.81, 6.90, 6.98, 7.06, 7.15, 7.23, 7.32, 7.41, 7.50, 7.59, 7.68, 7.77, 7.87, 7.96, 8.06, 8.16, 8.25, 8.35, 8.45, 8.56, 8.66, 8.76, 8.87, 8.98, 9.09, 9.20, 9.31, 9.42, 9.53, 9.65, 9.76, and 9.88\n## Choosing the Correct Resistor Value\nThe value you choose for your resistor should be based on a couple of factors. Price is important, with higher E series resistors generally having a higher cost due to their lower tolerance (i.e. higher accuracy of ohmage value). Alongside this, you also need to consider the requirements of your circuit.\n\n- [DIY](https:\/\/www.makeuseof.com\/category\/diy-projects\/ \"DIY\")\n- [Electronics](https:\/\/www.makeuseof.com\/tag\/electronics\/ \"Electronics\")\n\nFollow\n\nFollowed\n\nLike\n\nShare\n\n[Facebook](https:\/\/www.facebook.com\/sharer\/sharer.php?u=https%3A%2F%2Fwww.makeuseof.com%2Fwhat-are-standard-resistor-values%2F%2F&src=sdkpreparse)   [X](https:\/\/twitter.com\/intent\/tweet?text=What%20Are%20the%20Standard%20Resistor%20Values%3F&url=https%3A%2F%2Fwww.makeuseof.com%2Fwhat-are-standard-resistor-values%2F)   [LinkedIn](https:\/\/www.linkedin.com\/shareArticle?mini=true&url=https%3A%2F%2Fwww.makeuseof.com%2Fwhat-are-standard-resistor-values%2F&title=What%20Are%20the%20Standard%20Resistor%20Values%3F&source=www.makeuseof.com&summary=It%E2%80%99s%20essential%20to%20use%20the%20correct%20value%20resistors%20for%20your%20electronics%20projects.%20Find%20out%20all%20about%20standard%20resistor%20values.)   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Boilerpipe Text	Choosing the correct resistor for any given application requires a little bit of background knowledge. Understanding the ohmage of your resistor is crucial, but you should also have a grasp of standard resistor values. But what are the most common resistor values and what do they mean? What Is a Standard Resistor Value? First defined in 1952 by the IEC (International Electrotechnical Commission), resistor values aim to standardize the resistance and tolerance of resistors across the world. This makes it easier for consumers and electrical engineers to pick the right components for their circuits. It also provides manufacturers with a template to follow. Using resistors of the wrong values can lead to unexpected results within a circuit. For example, if you use a resistor with poor tolerances with a sensitive LED, you run the risk of too much power making it to the LED. This can cause circuits to fail and even damage components. A standard surface-mount resistor’s ohmage and tolerance can be found by reading resistor color codes . Common Standard Resistor Values Preferred values, also known as E-series, are split into groups based on their tolerance. The tolerance of a resistor describes the potential difference between its rated resistance and its actual resistance. For example, an E3 series resistor has a tolerance of 40%. This means that an E3 resistor with a resistance rating of 100 ohms will actually have a resistance between 60 and 140 ohms. Each series is split further into a set of resistance values. E Series & Resistance Values Each E series has its own set of resistance values that sit between one and ten, with the number of steps (on a logarithmic scale) being equal to the E number. These values represent the different ohmage options available within the series, and they can be multiplied by 10, 100, 1000, etc. for the full resistance range. For example, E3 resistors have the following three values; 1.0, 2.2, and 4.7. This means that E3 resistors can have a resistance of 1Ω, 2.2Ω, or 4.7Ω, but they can also have resistances of 10Ω, 22Ω, and 47Ω, or 100Ω, 220Ω, and 470Ω. This continues into millions of ohms. E6 Series Tolerances & Resistance Values E6 series resistors have a tolerance of 20% and the following six values. 1.0, 1.5, 2.2, 3.3, 4.7, and 6.8 E12 Series Tolerances & Resistance Values E12 series resistors have a tolerance of 10% and the following 12 values. 1.0, 1.2, 1.5, 1.8, 2.2, 2.7, 3.3, 3.9, 4.7, 5.6, 6.8, and 8.2 E24 Series Tolerances & Resistance Values E24 series resistors have a tolerance of 5% and the following 24 values. 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, and 9.1 E48 Series Tolerances & Resistance Values E48 series resistors have a tolerance of 2% and the following 48 values. 1.00, 1.05, 1.10, 1.15, 1.21, 1.27, 1.33, 1.40, 1.47, 1.54, 1.62, 1.69, 1.78, 1.87, 1.96, 2.05, 2.15, 2.26, 2.37, 2.49, 2.61, 2.74, 2.87, 3.01, 3.16, 3.32, 3.48, 3.65, 3.83, 4.02, 4.22, 4.42, 4.64, 4.87, 5.11, 5.36, 5.62, 5.90, 6.19, 6.49, 6.81, 7.15, 7.50, 7.87, 8.25, 8.66, 9.09, and 9.53 E96 Series Tolerances & Resistance Values E96 series resistors have a tolerance of 1% and the following 96 values. 1.00, 1.02, 1.05, 1.07, 1.10, 1.13, 1.15, 1.18, 1.21, 1.24, 1.27, 1.30, 1.33, 1.37, 1.40, 1.43, 1.47, 1.50, 1.54, 1.58, 1.62, 1.65, 1.69, 1.74, 1.78, 1.82, 1.87, 1.91, 1.96, 2.00, 2.05, 2.10, 2.15, 2.21, 2.26, 2.32, 2.37, 2.43, 2.49, 2.55, 2.61, 2.67, 2.74, 2.80, 2.87, 2.94, 3.01, 3.09, 3.16, 3.24, 3.32, 3.40, 3.48, 3.57, 3.65, 3.74, 3.83, 3.92, 4.02, 4.12, 4.22, 4.32, 4.42, 4.53, 4.64, 4.75, 4.87, 4.99, 5.11, 5.23, 5.36, 5.49, 5.62, 5.76, 5.90, 6.04, 6.19, 6.34, 6.49, 6.65, 6.81, 6.98, 7.15, 7.32, 7.50, 7.68, 7.87, 8.06, 8.25, 8.45, 8.66, 8.87, 9.09, 9.31, 9.53, and 9.76 E192 Series Tolerances & Resistance Values E192 series resistors have a tolerance of 0.5% or lower and the following 192 values. 1.00, 1.01, 1.02, 1.04, 1.05, 1.06, 1.07, 1.09, 1.10, 1.11, 1.13, 1.14, 1.15, 1.17, 1.18, 1.20, 1.21, 1.23, 1.24, 1.26, 1.27, 1.29, 1.30, 1.32, 1.33, 1.35, 1.37, 1.38, 1.40, 1.42, 1.43, 1.45, 1.47, 1.49, 1.50, 1.52, 1.54, 1.56, 1.58, 1.60, 1.62, 1.64, 1.65, 1.67, 1.69, 1.72, 1.74, 1.76, 1.78, 1.80, 1.82, 1.84, 1.87, 1.89, 1.91, 1.93, 1.96, 1.98, 2.00, 2.03, 2.05, 2.08, 2.10, 2.13, 2.15, 2.18, 2.21, 2.23, 2.26, 2.29, 2.32, 2.34, 2.37, 2.40, 2.43, 2.46, 2.49, 2.52, 2.55, 2.58, 2.61, 2.64, 2.67, 2.71, 2.74, 2.77, 2.80, 2.84, 2.87, 2.91, 2.94, 2.98, 3.01, 3.05, 3.09, 3.12, 3.16, 3.20, 3.24, 3.28, 3.32, 3.36, 3.40, 3.44, 3.48, 3.52, 3.57, 3.61, 3.65, 3.70, 3.74, 3.79, 3.83, 3.88, 3.92, 3.97, 4.02, 4.07, 4.12, 4.17, 4.22, 4.27, 4.32, 4.37, 4.42, 4.48, 4.53, 4.59, 4.64, 4.70, 4.75, 4.81, 4.87, 4.93, 4.99, 5.05, 5.11, 5.17, 5.23, 5.30, 5.36, 5.42, 5.49, 5.56, 5.62, 5.69, 5.76, 5.83, 5.90, 5.97, 6.04, 6.12, 6.19, 6.26, 6.34, 6.42, 6.49, 6.57, 6.65, 6.73, 6.81, 6.90, 6.98, 7.06, 7.15, 7.23, 7.32, 7.41, 7.50, 7.59, 7.68, 7.77, 7.87, 7.96, 8.06, 8.16, 8.25, 8.35, 8.45, 8.56, 8.66, 8.76, 8.87, 8.98, 9.09, 9.20, 9.31, 9.42, 9.53, 9.65, 9.76, and 9.88 Choosing the Correct Resistor Value The value you choose for your resistor should be based on a couple of factors. Price is important, with higher E series resistors generally having a higher cost due to their lower tolerance (i.e. higher accuracy of ohmage value). Alongside this, you also need to consider the requirements of your circuit.
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Understanding the ohmage of your resistor is crucial, but you should also have a grasp of standard resistor values. But what are the most common resistor values and what do they mean? ## What Is a Standard Resistor Value? ![row of soldered resistors](https://static1.makeuseofimages.com/wordpress/wp-content/uploads/2023/01/standard-resistor-values.jpg?q=50&fit=crop&w=825&dpr=1.5) NAR - Image from [Unsplash](https://unsplash.com/photos/2GNTBW7zPDU) First defined in 1952 by the IEC (International Electrotechnical Commission), resistor values aim to standardize the resistance and tolerance of resistors across the world. This makes it easier for consumers and electrical engineers to pick the right components for their circuits. It also provides manufacturers with a template to follow. Using resistors of the wrong values can lead to unexpected results within a circuit. For example, if you use a resistor with poor tolerances with a sensitive LED, you run the risk of too much power making it to the LED. This can cause circuits to fail and even damage components. A standard surface-mount resistor’s ohmage and tolerance can be found by [reading resistor color codes](https://www.makeuseof.com/how-to-read-resistor-color-codes/). ## Common Standard Resistor Values ![resistors in a toolbox](https://static1.makeuseofimages.com/wordpress/wp-content/uploads/2023/01/resistor-e-series.jpg?q=50&fit=crop&w=825&dpr=1.5) NAR - Image from [Unsplash](https://unsplash.com/photos/fReANpVza_Q) Preferred values, also known as E-series, are split into groups based on their tolerance. The tolerance of a resistor describes the potential difference between its rated resistance and its actual resistance. For example, an E3 series resistor has a tolerance of 40%. This means that an E3 resistor with a resistance rating of 100 ohms will actually have a resistance between 60 and 140 ohms. Each series is split further into a set of resistance values. ### E Series & Resistance Values Each E series has its own set of resistance values that sit between one and ten, with the number of steps (on a logarithmic scale) being equal to the E number. These values represent the different ohmage options available within the series, and they can be multiplied by 10, 100, 1000, etc. for the full resistance range. For example, E3 resistors have the following three values; 1.0, 2.2, and 4.7. This means that E3 resistors can have a resistance of 1Ω, 2.2Ω, or 4.7Ω, but they can also have resistances of 10Ω, 22Ω, and 47Ω, or 100Ω, 220Ω, and 470Ω. This continues into millions of ohms. ### E6 Series Tolerances & Resistance Values E6 series resistors have a tolerance of 20% and the following six values. - 1\.0, 1.5, 2.2, 3.3, 4.7, and 6.8 ### E12 Series Tolerances & Resistance Values E12 series resistors have a tolerance of 10% and the following 12 values. - 1\.0, 1.2, 1.5, 1.8, 2.2, 2.7, 3.3, 3.9, 4.7, 5.6, 6.8, and 8.2 ### E24 Series Tolerances & Resistance Values E24 series resistors have a tolerance of 5% and the following 24 values. - 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, and 9.1 ### E48 Series Tolerances & Resistance Values E48 series resistors have a tolerance of 2% and the following 48 values. - 1\.00, 1.05, 1.10, 1.15, 1.21, 1.27, 1.33, 1.40, 1.47, 1.54, 1.62, 1.69, 1.78, 1.87, 1.96, 2.05, 2.15, 2.26, 2.37, 2.49, 2.61, 2.74, 2.87, 3.01, 3.16, 3.32, 3.48, 3.65, 3.83, 4.02, 4.22, 4.42, 4.64, 4.87, 5.11, 5.36, 5.62, 5.90, 6.19, 6.49, 6.81, 7.15, 7.50, 7.87, 8.25, 8.66, 9.09, and 9.53 ### E96 Series Tolerances & Resistance Values E96 series resistors have a tolerance of 1% and the following 96 values. - 1\.00, 1.02, 1.05, 1.07, 1.10, 1.13, 1.15, 1.18, 1.21, 1.24, 1.27, 1.30, 1.33, 1.37, 1.40, 1.43, 1.47, 1.50, 1.54, 1.58, 1.62, 1.65, 1.69, 1.74, 1.78, 1.82, 1.87, 1.91, 1.96, 2.00, 2.05, 2.10, 2.15, 2.21, 2.26, 2.32, 2.37, 2.43, 2.49, 2.55, 2.61, 2.67, 2.74, 2.80, 2.87, 2.94, 3.01, 3.09, 3.16, 3.24, 3.32, 3.40, 3.48, 3.57, 3.65, 3.74, 3.83, 3.92, 4.02, 4.12, 4.22, 4.32, 4.42, 4.53, 4.64, 4.75, 4.87, 4.99, 5.11, 5.23, 5.36, 5.49, 5.62, 5.76, 5.90, 6.04, 6.19, 6.34, 6.49, 6.65, 6.81, 6.98, 7.15, 7.32, 7.50, 7.68, 7.87, 8.06, 8.25, 8.45, 8.66, 8.87, 9.09, 9.31, 9.53, and 9.76 ### E192 Series Tolerances & Resistance Values E192 series resistors have a tolerance of 0.5% or lower and the following 192 values. - 1\.00, 1.01, 1.02, 1.04, 1.05, 1.06, 1.07, 1.09, 1.10, 1.11, 1.13, 1.14, 1.15, 1.17, 1.18, 1.20, 1.21, 1.23, 1.24, 1.26, 1.27, 1.29, 1.30, 1.32, 1.33, 1.35, 1.37, 1.38, 1.40, 1.42, 1.43, 1.45, 1.47, 1.49, 1.50, 1.52, 1.54, 1.56, 1.58, 1.60, 1.62, 1.64, 1.65, 1.67, 1.69, 1.72, 1.74, 1.76, 1.78, 1.80, 1.82, 1.84, 1.87, 1.89, 1.91, 1.93, 1.96, 1.98, 2.00, 2.03, 2.05, 2.08, 2.10, 2.13, 2.15, 2.18, 2.21, 2.23, 2.26, 2.29, 2.32, 2.34, 2.37, 2.40, 2.43, 2.46, 2.49, 2.52, 2.55, 2.58, 2.61, 2.64, 2.67, 2.71, 2.74, 2.77, 2.80, 2.84, 2.87, 2.91, 2.94, 2.98, 3.01, 3.05, 3.09, 3.12, 3.16, 3.20, 3.24, 3.28, 3.32, 3.36, 3.40, 3.44, 3.48, 3.52, 3.57, 3.61, 3.65, 3.70, 3.74, 3.79, 3.83, 3.88, 3.92, 3.97, 4.02, 4.07, 4.12, 4.17, 4.22, 4.27, 4.32, 4.37, 4.42, 4.48, 4.53, 4.59, 4.64, 4.70, 4.75, 4.81, 4.87, 4.93, 4.99, 5.05, 5.11, 5.17, 5.23, 5.30, 5.36, 5.42, 5.49, 5.56, 5.62, 5.69, 5.76, 5.83, 5.90, 5.97, 6.04, 6.12, 6.19, 6.26, 6.34, 6.42, 6.49, 6.57, 6.65, 6.73, 6.81, 6.90, 6.98, 7.06, 7.15, 7.23, 7.32, 7.41, 7.50, 7.59, 7.68, 7.77, 7.87, 7.96, 8.06, 8.16, 8.25, 8.35, 8.45, 8.56, 8.66, 8.76, 8.87, 8.98, 9.09, 9.20, 9.31, 9.42, 9.53, 9.65, 9.76, and 9.88 ## Choosing the Correct Resistor Value The value you choose for your resistor should be based on a couple of factors. Price is important, with higher E series resistors generally having a higher cost due to their lower tolerance (i.e. higher accuracy of ohmage value). 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