Inquiries, comments, and suggestions relative to the content of this eiajedec standard or publication should be addressed to jedec solid state technology division, 2500 wilson boulevard, arlington, va 2220834, 70390775607559 or. 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. Technical note tn005 eia standard values for resistors. Resistor color coding carbon resistors are small, so their r value in ohms is marked using a colorcoding system. Standard eia decade values for e6, e12, e24, e96, e. Please confirm technical specifications before you order andor use. The electronic industries association eia and other authorities specify standard values for resistors. Standard electronic decade table vishay dale digikey. These are referred to as preferred values or eseries, and they are published in standard iec 60063. 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. Standard eia decade values table e6 e12 e24 e48 e96 e192. The eia e number is the number of logarithmic steps. Resistors are manufactured in series of standard resistance values according to the iec standard. An included userdefined function figure 2 stored within the spreadsheet references these values when looking up the required resistance value.
In most cases this will specify the standard value series, often e24 or e96. This is the maximum voltage that may be continuously applied to the resistor element, see iec publication 1158. Standard resistance value is obtained from the above chart by multiplying by powers of 10. This refers to eia standard resistor values listed here. Standard resistor values are calculated using the simple formula given below. Move the decimal point to achieve the actual value desired. Common resistor and capacitor values for electronic circuits the following are the standard resistor values available in carbon film with a 2 or 5 percent tolerance. To determine values other than the base, multiply the base value by 1, 10, 100, 1k, or 10k. Chart tables of common or standard resistor values in the e3, e6, e12, e24, e48. Once the value for the gain is established, equation 3b can be used to calculate the resistor values of r1 and r2, or equations 2 and 3a can be used to calculate r1, r2, and r3. The availability of tiaeia644acompliant devices allows users to confidently choose multidrop drivers when the need arises. 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.
Below are the rules to follow for reading the value of eia96 smd resistors. Physical resistor components will vary from the ideal due to fabrication variability, resistor composition, and, over time, degradation due to aging. Some products are available only at a limited set of values listed on the datasheet. This system has its origins in the early years of the last century at a time when most resistors were carbongraphite with relatively poor manufacturing tolerances. It also represents inductance values in the same way. Multiply by 10,000 to convert to 357 k 1% standard values eia e96 decade multiples are available from 10. The following table lists four established number series which are used as preferred values in electronic design. The e series preferred or standard resistor value ranges are internationally accepted and have been adopted by international standards organisations. For example, for e12 has twelve steps between any power.
Standard eia decade resistor values table e6 e12 e24. To manufacture resistors of every possible value would be impractical. This specification may be changed at any time without prior notice. The e series defines capacitance and resistance values as well as tolerances for capacitors and resistors. Electronic industries association eia values for 20 percent e6 through 0. 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. If there is no tolerance band, then find the side that has. Common resistor and capacitor values for electronic circuits. Standard resistor values electronics basictables an introduction to electronics 2 4 colour coding and most common resistor values solved table j 1 standard resistance values resistor v. Instead resistors are made in a restricted range of values and each value is quoted as a specific number of ohms plus or minus a percentage of the quoted value, this range of possible values is called the tolerance of the resistor. Successive values within a decade series are related approximately by a factor of for the e12 series, for. Eseries values standard series values in a decade for. If a capacitor is marked with 2a474j, the capacitance is decoded as described above, the two first signs is the voltage rating and can be decoded from the table given below here. There is a growing trend in new designs to migrate towards some of the very small packages where power dissipation allows.
Needless to say, occasionally other less standard packages may be used. First two are digits numbers and the last one is a letter. Coding is standardized by the electronic industries alliance. Low ohmic value products are often additionally available in integer values up to 10 milliohms and in multiples of 5 milliohms. Examples of smd resistors marked with the new eia96 code chip resistor values from 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. Tiaeia644driver test load table 1 includes significant 644aelectrical specifications alongside the 644 values.
Resistor color code calculator 3, 4 and 5 band resistors. The preferred value system has its origins in the early years of the last century at a time when most resistors were carbon. Often these resistors are too small for the resistor color code. Some series are not restricted to standard values on special order but stock availability is typically only in standard values. Standard resistor values and commonly associated tolerances. These standard values are published in the iec standards, iec 60063. The values of the e24 series are in accordance with iec publication 63. Select the first 3 or 4 bands for 20%, 10% or 5% resistors and all 5 bands for precision 2% or less, 5band resistors. Venkel ltd subject \ pdf \ eia values for surface mount resistors are displayed in an easy to read table provided by venkel. Standard electronic decade value tables decade table vishay.
If you want to find out the color bands for a value. Smd surface mount device resistors are marked with a alphanumerical code to indicate the resistor value and tolerance. Eia standard resistor values stackpole electronics, inc. Smd resistors with a 1% tolerance can be marked using eia96 code. The preferred value system has its origins in the early years of the last century at a time when most resistors were carbongraphite with. Standard series values in a decade for resistances and. Standard eia decade resistor values table the electronic industries association eia, and other authorities, specify standard values for resistors, sometimes referred to as the preferred value system. The e series is a system of preferred numbers also called preferred values derived for use. Standard resistance values are obtained from the decade table by multiplying by powers of 10. It turns out that standard resistor values form a preferred number series defined by the eia 5% values are part of a standard called e24 the standard is based on a geometric series each value is approximately 1. 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. The value system has its origins in the early years of the last century at a time when most resistors were carbongraphite with relatively poor manufacturing. Consult the data sheet on each product to determine the available range.
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