- E24 Resistor Sizes. 1.0 Ω. 10 Ω. 100 Ω. 1.0 kΩ. 10 kΩ. 100 kΩ. 1.0 MΩ
- Everyone. These are the E24 preferred resistor values. They are commonly available from component suppliers. Resistors smaller than 1Ω and larger than 10MΩ are unusual. The values are as follows and note there are 24 values per column or decade, hence E24 Ω
- Standard Resistor Values E24. 1R0. 10R. 100R. 1K0. 10K. 100K. 1M0. 1R1
- The 120 ohm resistor has a value ranging between 110 and 130 ohms. Following this logic, the preferred values for 10% tolerance resistors between 100 and 1,000 ohms would be 100, 120, 150, 180, 220, 270, 330 and so on (rounded appropriately); this is the E12 series shown in the table below

E24, E48, E96 and E192 resistor values. by fridahovsepian | Jul 13, 2016 | Caddock, Current Shunt, DC Ammeter Shunts, Digikey, Ohmite, Resistors, Ultronix, vishay, Wirewound resistors | 0 comments. Resistor Tables Standard Resistor Tables (Based on EIA Preferred Values) Submit a Comment Cancel reply. Your email address will not be. Standard Resistor Value Calculator: 1%, 5%, 10%. This calculator will select the closest standard resistor value, from 1% 5% or 10% standard EIA values, calculates the error, and prints out a table of the standard values for the given tolerance Two decades of E12 values, which would give resistor values of 1 Ω to 82 Ω The E series is a system of preferred numbers (also called preferred values) derived for use in electronic components. It consists of the E3, E6, E12, E24, E48, E96 and E192 series, where the number after the 'E' designates the quantity of value steps in each series e6 e12 e24 e96 e96 + e24; 10 15 22 33 47 68: 10 12 15 18 22 27 33 39 47 56 68 82: 10 11 12 13 15 16 18 20 22 24 27 30 33 36 39 43 47 51 56 62 68 75 82 91: 100 102 105. ** Standard Resistor Values ( ±5%) 1**.0 10 100 1.0K 10K 100K 1.0M 1.1 11 110 1.1K 11K 110K 1.1M 1.2 12 120 1.2K 12K 120K 1.2M 1.3 13 130 1.3K 13K 130K 1.3

Standard Resistors Values GUIDE: Standard Resistors Values. It appears that you are using AdBlocking software. The cost of running this website is covered by advertisements. E24 1.00 1.10 1.20 1.30 1.50 1.60 1.80 2.00 2.20 2.40 2.70 3.00 3.30 3.60 3.90 4.30 4.70 5.10 5.60 6.20 6.80 7.50 8.20 9.1 ** Standard Series Values in a Decade for Resistances and Capacitances E3 TO E192 ACCORDING TO IEC 60063 E192 E96 E48 E192 E96 E48 E192 E96 E48 E192 E96 E48 E24 E12 E6 E3 100 100 100 178 178 178 316 316 316 562 562 562 10 10 10 10 101 180 320 569 11 102 102 182 182 324 324 576 576 12 12 104 184 328**. All these values can be powers of ten (1.2- 12 - 120 etc). Next to the E12 series, other series are existing. It is a good practise to specify resistors from a low series when tolerance requirements are not high. The most common series are: E6 20%; E12 10%; E24 5% (also available with 1%) E48 2%; E96 1%; E192 0.5% (also used for resistors with 0.25% and 0.1%)

- As you can see in the chart,
**E24****values**are nicely spaced between 100 and 1k Ohms. Below 100 Ohms or above 1k, the series simply repeats. The name**E24**comes from the fact that there are 24**values**per decade of resistance. Other EIA**standards**define the**values**for other tolerance ranges - Resistor calculator (series and parallel) If you need a non-standard resistor value you could probably realize a close match using two resistor. If you use two resistor in series it is quite easy to figure out which values give the best match; on the other hand, using a parallel connection it is not so easy (at least for me) to find a good combination
- In this article you'll find an interactive table in which you can find the standard resistor values, as used in electronics, and defined by the IEC. You'll find the values for the E6, E12, E24, E48, E96 and E192 Series (or preferred resistor values) in this table. This can be useful when trying to find [
- Electronics / Resistor / Standard resistor values. Standard resistor values . The resistance of resistors often follows the E series. The E series consists of the E3, E6, E12, E24, E48, E96 and E192 series. A higher number correlates to a lower tolerance and a higher precision. All standard resistor values can be found in the table below. Tabl
- Preferred Resistor Values Resistors are available in a number of standard ranges, often called 'preferred values' These ranges, or series, are set out by the Electronic Industries Association (EIA), and are E3, E6, E12, E24, E48, E96 and E192. The number after the 'E' denotes the number of values the series contains per decade
- There are four more or less commonly used resistor series, with 12, 24, 48, and 96 values per decade, respectively. Generally, 5% tolerance resistors are available in E24 and 1% resistors in E96, but this is not a hard and fast rule. For example some low-value 1% resistors are available in E12 only
- Resistors are one of the four fundamental types of passive electronic components; the other three are the inductor, the capacitor, and the memristor.The basic unit of resistance is the ohm (Ω).. Standard base resistor values are given in the following tables for the most commonly used tolerances (1%, 2%, 5%, 10%), along with typically available resistance ranges

is shown under an associated value of tolerance %. The num ber series under the ± 10 % column is known as the E12 Series because there are 12 standard values within a decade range. ± 2 % and ± 5 % utilize the E24 Series, ± 1 % uses E96 and ± 0.1 %, ± 0.25 % and ± 0.5 % use E192 Quantization errors in resistor values are inherent to Javascript. Instead of using advanced Javascript functions that would make the script incompatible with older browsers, I elected to leave the quantization errors

- Standard Resistor Values: E3, E6, E12, E24, E48 & E96 Resistor values are organised into a set of different series of preferred values or standard resistor values. These standard resistor values have a logarithmically based sequence and this enables the different values to be spaced in such a way that they relate to the component tolerance or accuracy
- E6 E12 E24 E48 E96 E6 E12 E24 E48 E96 E6 E12 E24 E48 E96 ± 20% ± 10% ± 5% ± 2% ± 1% ± 20% ± 10% ± 5% ± 2% ± 1% ± 20% ± 10% ± 5% ± 2% ± 1% 100 100 100 100 105 110 110 115 120 120 100 220 220 220 110 240 EIA Standard Resistor Values by ± Tolerance% Move the decimal point to achieve the actual value desired. 442 442 953 953 453.
- . and max. range values. If you want to find out the color bands for a value.
- EIA Standard Resistor Values Stackpole Electronics, Inc. Resistive Product Solutions Rev Date: 10/31/2011 1 www.seielect.com This specification may be changed at any time without prior notice. marketing@seielect.com Please confirm technical specifications before you order and/or use. Codes for fixed resistors
- E6 E12 E24 E48 E96 E This process is followed through for all the values in a decade, creating a set of standard resistor values for each tolerance. 5,6. The 120 ohm resistor has a value ranging between 110 and 130 ohms. You also have the option to opt-out of these cookies. 0000001190 00000 n xre
- E24 E96 Commdon ratio 10 1.46 10 1.21 10 1.10 10 1.02 The values are rounded up or down based on the number of effective digits. Notes 6 12 24 96 The values are rounded up or down based on the number of effective digits. For basic guidelines on using resistors,see the technical reports issued by Japan Electronics an
- Now days in many datasheets we can see the resistor series is mentioned like; E96 + E24 and E192 + E24 i.e. addition of two E series. To meet market requirement this is purposely done by resistor manufacturers as some resistor values in E24 series are not available in E48, E96 and E192 series

Lastly, the **values** of the E3 series are obtained by omitting every second term of the E6 series. Table 1 shows the **values** of the **E24**, E12, E6 and E3 series. The full range of **standard** component **values** consists of decimal multiples and sub-multiples of **E24**, E12, E6 and E3 **values** provided in Table 1 They are the standard E3, E6, E12, E24, E48 and E96 resistor values. E3 STANDARD RESISTOR SERIES 1.0 2.2 4.7 The E3 series resistors are the most widely used and hence these values will be the most common resistor values used within the electronics industry. E6 STANDARD RESISTOR SERIES 1.0 1.5 2.2 3.3 4.7 6.8 The E6 series resistor values are. Standard Resistor Values: E3, E6, E12, E24, E48. Below are the common resistor values. It should be noted that some values in the E24 series don't exist in E48 to E series. This process is followed through for all the values in a decade, creating a set of standard resistor values for each tolerance Standard EIA Decade Values For E-6, E-12, E-24, E-96, E-192, prefered values for diferent tolerance classes, acordingly to IEC Publication 63 The Electronic Industries Association (EIA), and then statued by IEC publication 60063, specify standard values for resistors, sometimes referred to as the preferred value system

Generally, Resistors come in standard values such as E6, E12, E24, E48, E96, and E192. If you are not able to find the exact value of resistor that you have calculated for your circuit, then you have to select the next coming value of resistor that you have calculated Retrieved from https: The E96 and E series of standard resistor values also exist, but their use is much smaller than those in the other ranges given above. Often designs try to keep to the E3 or E6 standard resistor values, only using those in the E12, E24, E48 or E96 if absolutely necessary * Norges største nettavis for økonomi og næringsliv*. E24 gir deg det aller siste fra aksjemarkedet og tar pulsen på norsk og internasjonal økonomi, sammen med de ferskeste nyhetene fra felter som IT, ledelse, bil og personlig økonomi

Preferred resistor values; how the EIA preferred values system covers any resistor value required with the E24, and other resistor ranges. Decade scaling for more resistor values and the BS 1852 Notation system for resistor values *Standard Resistance value is obtained from the above chart by multiplying by powers of 10. i.e. 11.3 can be 11.3, 113, 1.13k, 11.3k, 113k, or 1.13meg BRANNON ELECTRONICS, INC. Title: STANDARD VALUE DECADE FOR 1% RESISTORS Author: C. Tom Brannon Created Date Resistor Values E6 E12 E24 E48 E96 E192 | Resistors, Hobby Standard values for capacitors and resistors | doEEEt.com. Low Resistance Zero / 0 Ohm Carbon Film E24 Resistor 4 Watt Low Resistance Zero / 0 Ohm Carbon Film E24 Resistor 4 Watt Circuit Analysis - Part 4: RC-Filters, LEDs & Buzzers. This marking code changes from one decade to another decade. This is known as the EIA color code. For each tolerance band, the EIA allocates E-series (E3, E6, E12, E24 and E96) to name the resistor values. The standard decade resistors (also known as preferred values) are shown in the below table Resistor Values (ohms), Standard E24 range E12 range bold 1 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.

- Standard Resistor Value Series and Tolerances. The standard E3, E6, E12, E24, E48 and E96 resistor values are listed below. *The calculated tolerance for this series is 36.60%, While the standard only specifies a tolerance greater than 20%, other sources indicate 40% or 50%
- E24 Standard Resistor Series. Though, resistors in ranges up to E24 are available, it helps in any design to focus on using as small a number of resistor values as possible. This will reduce the number of components in a design and this will help reduce costs when considering large-scale production
- I should mention that some folks use multiple resistors to tweak a value. Here are some example circuits (Figure 6) from W. Stephen Woodward. I have put out a blog post on how to select the correct standard resistor values to bring you with 0.1% of any resistor value between 10 Ω and 1 MΩ
- The specific resistor values are standardized in the EIA E range of standards, with EIA E12 and EIA E24 being the most common. This way manufacturers only need to produce and store a limited variety of different resistors and consumers can rely on the fact that resistors of different manufacturers are interchangeable
- ating rounding errors incurred at the end of the design. Selecting resistor values traditionally has been a manual process where the calculated value is matched to a real value in a printed lookup table
- Standard Resistor Calculator This calculator will select the closest standard resistor value, from 1% 5% or 10% standard EIA values, calculates the error, and prints out a table of the standard values for the given tolerance

STANDARD RESISTANCE VALUES FOR THE 10 TO 100 DECADE (also usable in decade multiples or sub-multiples) E192 E96 E24 E12 E6 E192 E96 E24 E12 E6 E192 E96 E24 E12 E6 E192 E96 E24 E12 E6 E192 E96 E24 E12 E6 0.10% 0.10% 0.10% 0.10% 0.10% Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other. * The E series defines capacitance and resistance values as well as tolerances for capacitors and resistors*. These standard values are published in the IEC standards, IEC 60063:1963 and IEC 60063:2015. Whereas the IEC 60063 defines the preferred values and tolerances, the IEC 60062 defines marking codes for capacitors and resistors Standard Resistor Tables (Based on EIA Preferred Values) Where electronics engineers discover the latest tools. Hardware design made eas To simplify resistor manufacture, handling, purchase and circuit design, resistor values are arranged into standard resistor values known as the E series. Is there any other resistance outside E serie

Resistor E series The EIA preferred values or standard resistor values can be summarised in a tabular form to give the different values within each decade. It consists of the E3E6E12E24E48E96 and E series, where d24 number after the 'E' designates the quantity of value steps in each series. In other projects Wikimedia Commons Bourns® fixed resistors typically follow the E24/E24+96 series standard resistor values. The first 2 or 3 digits are derived from the standard value table, while the last digit is the multiplier representing the number of zeros to follow. For some resistors, Bourns utilizes a popular resistance values table This page shows the standard resistor values that are currently available. Please click on the range links to see the colour code of any particular resistor. This is not the E24 series; however, it will eventually morph into it. Wire Link Link / 0 Ω 0.1 Ω - 0.22 Ω 0R1 / 0.10 Ω R22 / 0.22 Ω 1 Ω - 8.2 Ω 1R0 / 1.0 Ω 1R1 / 1.1 Ω 1R2. For more information, visit http://www.resistorguide.com/resistor-values/ Learn what preferred values for resistors are. In this video is explained what E-se.. Resistor color code examples E12 series resistors. In the E12 series each succeeding resistor falls within the -/+ 10 % of the previous value. Until fairly recently, 10% tolerance resistors were the norm, but today, 5% (E24) resistors seem to be the most commonly used. They still can be found in vintage radios, old amplifiers, etc., but the price of a 5% resistor is low enough to be the.

- Resistor preferred values According to IEC-60063 international standard Introduction. The IEC-60063 standard defines six series (E6, E12, E24, E48, E96, E192) of preferred values for some electronic components like capacitors, inductances and resistors. The E6 series is every other element of the E12 series, which is every other element of the E24 series; The same applies to the E48, E96 and E192
- All resistor values entered with greater than 3 digits will be displayed in scientific notation. Enter the desired resistance value and the calculated closest standard resistor is returned for each accuracy group. E6: 20% resistors E12: 10% resistors E24: 5% resistors E48: 2% resistors E96: 1% resistors E192: 0.5%, 0.25%, 0.1% resistors
- The exact value is of little is of little consequence and the value can be maintained within the E3 series. The E series preferred or standard resistor value ranges are internationally accepted and have been adopted by international standards organisations. Resistor Values E6 E12 E24 E48 E96

- Often designs try to keep to the E3 or E6 standard resistor values, only using those in the E12, E24, E48 or E96 if absolutely necessary. The resistance of this component at the bottom of its tolerance band is 1. x bbbd`b``* / 0000029839 00000 n endstream endobj 77 0 obj >/Size 51/Type/XRef>>stream 0000000856 00000 n 1,2
- ing standard 5%-precision values of components such as resistors
- Standard Resistor Values | E3 E6 E12, E24, E48 Series | Electronics Notes. The table below is normalized for the decade between and 1, The exact value is of little is of little consequence and the value can be maintained within the E3 series. JAVIER NEGRETE ALEJANDRO MAGNO Y LAS AGUILAS DE ROMA PDF
- Some common values like 120Ω 130Ω 150Ω . . . are not standard in the E48 E96 or E192 series but nowadays are readily available in the standard E24 series at 1% or better tolerance so check from E12 upward ~ Click here for other calculator
- The values of the E24 series are obtained by rounding the theoretical numbers of the geometric series (with n=24).It is important to note that some values of the E24 series deviate from the mathematical rule. x b`` g`` a Y8 E3. 0000029656 00000 n These are the E24 preferred resistor values. 0000007497 00000 n E6 Standard Resistor Series 1. rekhe. ? ݍf, L k 4 j^w qQQ | [ L W = O`` bn p H3 20

This graph shows how any value between 1 and 10 is within ±10% of an E12 series value, and its difference from the ideal value in a geometric sequence. By Anders Andersson from Wikimedia Commons . While it is possible to have a 3.3kΩ resistor with 20% tolerance test out between 2.64kΩ and 3.96kΩ, I would be hesitant to use it Standard Resistor Values | E3 E6 E12, E24, E48 Series | Electronics Notes. Below are the common resistor values. Archived from the original on List of International Electrotechnical Commission standards. It reduces the number of different types of resistor used in a design and this simplifies purchasing and manufacturing processes The Excel cell formula below calculates the nearest standard 1%-resistor value without using a lookup table or macro. Type or electronically paste the text below into any cell (other than A1). The.

Standards are set in place that help determine common resistor and capacitor values. The values are calculated using some math magic (see: Renard Series & E series of Preferred Numbers). This process helps simplify inventory and purchasing needs. This explains why you find more resistor options in a common value such as 4.99k ohms rather than values like 5k ohms. Because of this, common values. Standard resistor values: Resistors are sold with fixed values, that is standard ones. There are many series called E3, E6, E12, E21, E48, E96 and E192. Base value for an Ex serie are Ri=10^(i/x) for i between 0 and x-1. Then, a serie contains all the multiple by 10 of this base serie The value of a resistor can be calculated using the colour bands on the resistors casing, find out what each colour means and how to read them with this tutorial. Resistor tolerances, a worked example, the resistor preferred value system and some tasks for you to try are also included This allows easier purchasing migration between different tolerance parts. Often designs try to keep to the E3 or E6 standard resistor values, only using those in the E12, E24, E48 or E96 if absolutely necessary. Take then a resistor with a value of 1. Standard Resistor Values: E3, E6, E12, E24, E4

Standard chip resistors sizes 1206, 0805, 0603 and 0402 RC01/11/21/31 FUNCTIONAL DESCRIPTION Product characterization Standard values of nominal resistance are taken from the E24 series for resistors with a tolerance of ±5% or ±2%. The values of the E24 series are in accordance with IEC publication 63. Limiting values Note 1 E24 SERIES E24 SERIES OF STANDARD RESISTOR VALUES Value Code Value Code Value Code Value Code Value Code Value Code Value Code 1.0 010J 10 0100 100 0101 1.0K 0102 10K 0103 100K 0104 1.0M 0105 1.1 011J 11 0110 110 0111 1.1K 0112 11K 0113 110K 0114 1.1M 0115 1.2 012J 12 0120 120 0121 1.2K 0122 12K 0123 120K 0124 1.2M 012 Standard resistor values 5 10 10 100 10k 10k 100k 10m 11 11 110 11k 11k 110k 11m 12 12 120 12k 12k 120k 12m 13 13 130 13k 13k 130k 13m 15. <br>The number following the E specifies the number of logarithmic steps per decade. 1, 1,1. 0000017734 00000 n The E series preferred or standard resistor value ranges are internationally accepted and have been adopted by international standards organisations. E6 E12 E24 E48 E96 E This process is followed through for all the values in a decade, creating a set of standard resistor values.

Standard Resistor Values Math Encounters Blog. Most Common Resistor Values. Rnd 1550603fkit Resistor Assortiment Smd 0603 E24 1 100 Pcs Value. Basic Electronics Color Codes Numerical Codes And Power. E Series Of Preferred Numbers Wikipedia. Standard Resistor Values Electronics Basictables They are the standard e3 e6 e12 e24 e48 and e96 resistor values. Standard resistor values in 1952 the iec international electrotechnical commission decided to define the resistance and tolerance values into a norm to ease the mass manufacturing of resistors. This means that you can always find an e12 resistor value within 10 of your required value

Standard Resistor Values Math Encounters Blog. Solved 24 20 In Fig E24 20 C 6 00 Mf C2 3 00 Mf A. Standard Values Resistor Properties. Untitled. Solved Student Id Grade C2 Vin Oa1 Vout There Are 2 Krc. Standard Value Resistor Capacitor Combination Tool Page 1 Understanding Resistor Value Coding Mec Technical Note Standard Resistor Values Math Encounters Blog Standard series values in a decade for resistances and capacitances e3 to e192 according to iec 60063 e192 e96 e48 e192 e96 e48 e192 e96 e48 e192 e96 e48 e24 e12 e6 e3 100 100 100 178 178 178 316 316 316 562 562 562 10 10 10 10 101 180 320 569 11 102 102 182 182 324 324 576 576 12 12

Lastly, the values of the E3 series are obtained by omitting every second term of the E6 series. The E series preferred or standard resistor value ranges are internationally accepted and have been adopted by international standards organizations. This is done for clarity Code D27 means the same value (120 kiloohms) but with a 5% tolerance, because range 25 - 48 means 5%. Number 27 is 3rd in this range, indicating the 3rd value of E24 table - value 120. Letter D indicates multiplication by 1000, just like in the previous example. Code D51 is a 150 kiloohm resistor

<br>E3. Chip Resistor Surface Mount 9 Marking Indicator Tol. This website uses cookies to improve your experience. 4,3. The rationale is simple - select values for components based on the tolerances with which they are able to be manufactured. The E24, E12, E6, and E3 series. 0000036899 00000 n These cookies will be stored in your browser only with your consent. 0000001442 00000 n <br> <br. Components used in electrical engineering like resistors (or e.g. capacitors) cannot be manufactured in all manner of gradations, but must be produced to specific values, i.e. values in a standard series.The various standard series are classified as E6, E12, E24, E48 and E96 1/4W METAL FILM RESISTORS E24 ALL VALUES FROM 100K TO 9.1M PACKS OF 100. £1.99. Free postage. RT08842 MF0W4FFE024KIL Resistor Kit 0.25W 1% E24. £140.79. FAST & FREE. Click & Collect. 1/4W METAL FILM RESISTORS E24 ALL VALUES FROM 1K TO 91K PACKS OF 100. £1.99. Free postage. 756 items found from eBay international sellers Standard Resistor Values: E3, E6, E12, E24, E48 List of International Electrotechnical Commission standards. It consists of the E3E6E12E24E48E96 and E series, where the number after the 'E' designates the quantity of value steps in each series

Some places I've used non-E24 resistors include the 140kΩ voltage divider resistors in the Leapfrog VCF, and the 499kΩ 0.1% resistors that set the quantizer steps in the Octave Switch. The way that the standard resistor values attempt to divide up the decade (factor of 10). For a 0.5V drop @ 1mA we need a 500R resistor - BUT this is not a 'standard' E24 or 5% value so choose a nearest preferred value (n.p.v.) - either 470R or 510R . Decision 3. I choose the 510R . This value represents 10% supply drop leaving 90% to be divided between the transistor (c-e) and the collector resistor

The series are as follows: Occasionally E24, E48, E96 or even E series values may needed for high accuracy and close tolerance requirements. The rationale is simple - select values for components based on the tolerances with which they are able to be manufactured. They provide a wider range of common resistor values that can be used Resistor color code is used to indicate the value of resistance. The standards for color coding registers are defined in international standards IEC 60062. This standard describes color coding for axially leaded resistors and numeric code for SMD resistors. There are several bands to specify the value of resistance Standard Resistor Values | E3 E6 E12, E24, E48 Series | Electronics Notes. If a manufacturer sold resistors with E3 series values in a range of 1 rihe to 10 megohms, then the available resistance values would be: Supplier Directory For everything from distribution to test equipment, components and more, our directory covers reohe E24 Resistor Values. As you can see in the chart, E24 values are nicely spaced between 100 and 1k Ohms. Below 100 Ohms or above 1k, the series simply repeats. The name E24 comes from the fact that there are 24 values per decade of resistance. Other EIA standards define the values for other tolerance ranges

Standard Resistor Values: E3, E6, E12, E24, E48 Supplier Directory For everything from distribution to test equipment, components and more, our directory covers it. The E series preferred or standard resistor value ranges are internationally accepted and have been adopted by international standards organisations standard resistor values table For instance, the E48 list is often used as a stock list for 1% resistors for inventory control (48 values per decade rather than 96), but this practice leaves holes or gaps in one's stock not covered by tolerance overlap, an undesirable practice in a prototype lab (less of an issue to the digital designer than to an analog circuit designer) I have tied to calculate the standard resistor values this way. It does not work -- there is always at least one value that is not right. I would love for someone to show me how to make a calculation that actually matches all of the standard values E24 Resistor For Sale Ebay Bmw E24 Magna Auxiliary Fan Resistor Repair Kit Acm 1 Year.

The values that were chosen were all to do with tolerances and manufacturing in the early days of electronics. If you look at the E12 standard resistor values when resistors were commonly only of a 10% tolerance, the value of 82 Ohms could be 10% higher which would add on another 8.2 Ohms so it could be as high as 90.2 Ohms Enter the resistor value you need in Ohms (sorry, no unit parsing/converter now), pick your maximum number of resistors in the combination, choose the resistor values available to make combination (you can even pick custom subsets of E12 or E24), adjust the combination type (parallel only, series only or both), hit the Compute button Lastly, the values of the E3 series are obtained by omitting every second term of the E6 series. Table 1 shows the values of the E24, E12, E6 and E3 series. The full range of standard component values consists of decimal multiples and sub-multiples of E24, E12, E6 and E3 values provided in Table 1 1st Band: Yellow -> 4 2nd Band: Purple -> 7 3rd Band: Orange -> x1kΩ 4th Band (tolerance): ± 5% Final resistor value:47 x 1kΩ = 47000Ω = 47kΩ with ± 5% tolerance The maximum number of combinations of the first 2 bands is too high, and because of that a standard set of numbers has been adopted.These sets have a well defined pattern that repeats through each multiplier decade

The tolerance series of Preferred Values shown above are manufactured to conform to the British Standard BS 2488 and are ranges of resistor values chosen so that at maximum or minimum tolerance any one resistor overlaps with its neighbouring value. For example, take the E24 range of resistors with a 5% toleranc It will calculate power efficiency of the current circuit and suggest the suitable standard resistor with tolerance of 5%(E24) or 10%(E12) for your LEDs and it will show you the color coding of that resistor so that you can pick it quickly, yet it will show the required power rating of the resistor so that you can make the reliable choice of resistor wattage. it will Show you a schematic of. Stocking only the E24 series in 1% will result in less symmetrical holes in stock than the practice of stocking only the E48 series. The value is then 348 x 10 = 3480 ohms or 3.48 kiloohms. Using 10% tolerance devices as an example, suppose that the first preferred value is 100 ohms. The Electronic Industries Association (EIA), and other authorities, specify standard values for resistors. It should be noted that some values in the E24 series don't exist in E48 to E series. NOVA Elektronik - DIN/IEC Standardwerte E-Reihen. The E96 and E series of standard resistor values also exist, but their e244 is much smaller than those in the other ranges given above