E24 e96 resistor values pdf

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. These standard resistor values are those which can be bought. 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 12 104 184 328 583 105 105 105 187 187 187 332 332 332 590 590 590 15 15 15 106 189 336 597 16 107. Preferred number series for resistors and capacitors specifies the preferred values in the e24 series, which is the most often used. The electronic industries association eiaand other authorities, specify standard values for resistors, sometimes referred to as the preferred value system.

Jan 02, 20 using standard resistor values can greatly impact the accuracy and predictability of a circuit by eliminating rounding errors incurred at the end of the design. As you can see in the chart, e24 values are nicely spaced between 100 and 1k ohms. E6 e12 e24 e48 e96 e the actual resistance at the top of the tolerance band is 1. E6 e12 e24 e48 e96 reiihe list of international electrotechnical commission standards. This specification may be changed at any time without prior notice. They are the standard e3, e6, e12, e24, e48 and e96 resistor values. The e series is a system of preferred numbers also called preferred values derived for use in electronic components. E192 resistors datasheet, cross reference, circuit and application notes in pdf format.

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. So far, we have calculated resistor values and then picked the nearest preferred value. Each series denotes the number of different values in a decade. You can derive all other possible values from this table by multiplying or dividing by 1 0, 1 00, 1 000, etc. Please refer to standard resistance values shown on this catalog. Eia standard resistor values by tolerance% move the decimal point to achieve the actual value desired. Although it is theoretically possible to produce components of any value, in practice the need for inventory simplification has. You want to find the e24 e48 e96 resistor value that is closest to a given exact value programmatically using python. Since some values in the e24 series do not exist in the e48, e96 and e192 series, resistor. For this lower end of the e series used for resistors. The values of the e24 e96 series are in, resistance tolerance and series max. E3, e6, e12, e24, e48, e96 values chart and tables of standard or common resistor values in the e3, e6, e12, e24, e48, e96 ranges.

Successive values within a decade series are related approximately by a factor of for the e12 series, for the e24 series, for the e96 series and for the e192 series. The electronic industries association eia, and other authorities, specify standard values for resistors, sometimes referred to as the preferred value system. Eia standard resistor values stackpole electronics, inc. Mar 20, 2020 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 120 ohm resistor has a value ranging between 110 and ohms. Standard resistor values are calculated using the simple formula given below. For example, for e12 has twelve steps between any power. Standard resistance values for the 10 to 100 decade also usable in decade multiples or submultiples 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. Finding the nearest e96 resistor value in python techoverflow.

The more accuracy closer tolerance needed in resistors chosen for a particular purpose, the more values must be in the range chosen and generally the more expensive each resistor will be. The number after the e denotes the number of values the series contains per decade. 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 12 104 184 328 583. 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. There are four more or less commonly used resistor series, with 12, 24, 48, and 96 values per decade, respectively. Eseries values standard series values in a decade for.

Standard eia decade resistor values table e6 e12 e24. The e6 range has 6 values, and the e24 range 24 values per decade. General resistor information resistive product solutions for shared e24 e96 values, 1% tolerance products may be marked with 3digit marking instead of the standard 4digit marking for all other e96 values. These preferred values are derived from an exponential function, so they are known as e series e6, e12, e24 and e96, whose values are given in appendix a. It consists of the e3, e6, e12, e24, e48, e96 and e192 series, where the.

The excel cell formula below calculates the nearest standard 1% resistor value without using a lookup table or macro. Current resistor technology enables very close tolerance levels to be achieved, yet there is still a great benefit in using resistors even from the e3 series. Occasionally e24, e48, e96 or even e192 series values may needed for high accuracy and close tolerance requirements. All e24 values available in 1% tolerance are also marked with 3digit marking. The eia e number is the number of logarithmic steps. The e24 series is for resistors with a 5% tolerance precision.

Archived from the original on supplier directory for everything from distribution to test equipment, components and more, our directory covers it. Resistors are manufactured in series of standard resistance values. Supplier directory for everything from distribution to test reihee, components and more, our directory covers it. The eia preferred values can be summarised in tabular form to give the different values within each decade.

These are referred to as preferred values or eseries, and they are published in standard iec 60063. In common use, better coverage of the decade range than e24, also used instead of e96 where cost is. Notes 6 12 24 96 the values are rounded up or down based on the number of effective digits. Youll find the values for the e6, e12, e24, e48, e96 and e192 series or preferred resistor values in this table. Standard eia decade values table e6 e12 e24 e48 e96 e192. Although there are online tools available for this task, it is often useful to be able to integrate scriptable functions into custom software. Standard series values in a decade for resistances and. Dcrcw e3 standard thick film chip resistors datasheet pdf. Codes for fixed resistors standard resistance values for the 10 to 100 decade also usable in decade multiples or submultiples 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.

Two decades of e12 values, which would give resistor values of 1. Selecting resistor values traditionally has been a manual process where the calculated value is matched to a real value in a printed lookup table. For basic guidelines on using resistors,see the technical reports issued by japan electronics and. The others values can be obtained by multiply these values for powers of 10. To determine values other than the base, multiply the base value by 1, 10, 100, 1k, or 10k. The name e24 comes from the fact that there are 24 values per decade of resistance. 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. 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. Below 100 ohms or above 1k, the series simply repeats. Jul 03, 2019 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. Vishay e96 series resistor kits are available at mouser electronics.

For the e48 to e192 series there significant figures are used for all. E3 50% tolerance no longer used e6 20% tolerance now seldom used e12 10% tolerance e24 5% tolerance e48 2% tolerance e96 1% tolerance e192 0. Successive values within a decade series are related approximately by a factor of for the e12 series, for the e24 series, for the e96. The e series values are split into two groups which have slightly different numbering, although they follow the same basic numerology. Resistor value and ratio calculator nightshade electronics. For example some lowvalue 1% resistors are available in e12 only. 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. Generally, 5% tolerance resistors are available in e24 and 1% resistors in e96, but this is not a hard and fast rule. It is a good practise to specify resistors from a low series when tolerance requirements are not high. The eia e series specify the preferred values for various tolerances. The eia preferred values or standard resistor values can be summarised in a tabular form to give the different values within each decade. Type or electronically paste the text below into any cell other than a1. 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. Excel formula calculates standard 1%resistor values.