Resistor Values and Package Sizes


[Resistor Military Specifications] [Resistor Dictionary]
[Resistor Derating] [Potentiometer Data]
[Resistor Manufacturers]

Designing with Resistors
 
Characteristics of Surface Mount Resistor Sizes
Chip SizeBody LengthBody WidthSolder sideSolder FootHeightPower Watts
0201 0.60 +/- 0.05 0.30 +/- 0.05 0.13 +/- 0.05 0.25+ 0.05 0.25 +/- 0.05 0.05w
0402 1.00 +/- 0.05 0.5 +0.1 0.20 +/- 0.10 0.25 + 0.050.35 +/- 0.05 0.031 / 0.063
0603 1.60 +/- 0.10 0.80 +/- 0.10 0.20 +/- 0.10 0.30 + 0.20 0.50 +/- 0.10 0.063
0805 2.00 +/- 0.15 1.25 +/- 0.15 0.40 +/- 0.25 0.30 + 0.200.50 +/- 0.15 0.100
1206 3.20 +/- 0.15 1.60 +/- 0.15 0.45 +/- 0.25 0.40 + 0.200.60 +/- 0.15 0.125
1210 3.20 +/- 0.15 2.60 +/- 0.15 0.50 +/- 0.30 0.40 + 0.200.60 +/- 0.10 0.250
1217 3.00 +/- 0.20 4.20 +/- 0.20 0.80 +/- 0.30 0.80 +/- 0.25 0.9 max 0.250
2010 5.00 +/- 0.15 2.60 +/- 0.15 0.50 +/- 0.30 0.40+/-0.20 0.70 +/- 0.10 0.250
2020 5.08 +/- 0.20 5.08 +/- 0.20 0.80 +/- 0.30 0.80 +/- 0.30 0.9 max 0.500
2045 5.00 +/- 0.15 11.5 +/- 0.30 0.80 +/- 0.30 0.80 +/- 0.30 0.9 max 1.000
2512 6.30 +/- 0.15 3.10 +/- 0.15 0.60 +/- 0.25 0.50 +/- 0.25 0.60 +/- 0.10 1.000
Resistor Chip Size by Package Type and Dimensions

The physical size for surface mount chip resistors and capacitors is shown in the graphic above.
The standard EIA component designations are shown under the type heading.
The common values for capacitors or standard wattage size for resistors are shown for each EIA component type.
The smaller the physical part, the lower the inductance.
Pick the smallest possible package size which still meets the design criteria.
The table provides dimensions in mm, the 'Type' is the English designation. The 'type' used above are different for metric designations.




Standard Surface Mount Sizes

Surface Mount Chip sizes; inches
Case Size Length Width Height
0505 0.050 0.050 0.020
0805 0.080 0.050
1005 0.100 0.050
1206 0.126 0.063
2010 0.197 0.098 0.035
2512 0.250 0.120
2525 0.250 0.250
3725 0.375 0.250
Nominal Dimensions in inches, may not follow released standards.




Surface Mount Chip sizes; millimeters
Case Size Length Width Height
0202 20 +/- 5 20 +/- 3 15
0303 30 +/- 5 30 +/- 5
0403 45 +/- 5 30 +/- 5 20
0404 40 +10, -5 40 +/- 5
0502 50 +10, -5 25 +/- 5
0505 50 +10, -5 25 +/- 5
Nominal Dimensions in millimeters, may not follow released standards.


Standard Resistor Values

Preferred Resistor Values; which would also be Standard Resistor Values are shown below.
Common 5 percent resistor values.

Standard 5% Resistor values
 
 

Other resistor values are possible. However any other resistor value will be non-standard and not preferred.
Omite produces High Voltage Chip Resistors up to 50G. I see that SRT Resistor produces resistor up to 100T ohms, also high voltage.
If a company uses 1 percent resistors, designs only requiring a 5 percent value may also use 1% types.
Stocking only one type is more cost effective than stocking both 1 and 5 percent values, even if the 1 percent resistors cost more.
So many companies may not even have circuit designs that contain 5 percent resistor values.
The same could be true for 10 percent resistors, with a company only stocking 5 percent values.
Although the price difference is less than a tenth of a cent, the savings might not out-weigh the stocking cost.





Decade Tables

How to use resistor decade tables;
Use the values in the table as shown.
For larger values multiply the data by 10x, 100x, 1000x and so on to get the desired value.

EIA E24 Codes for Standard Resistor values with + 5% Tolerance
10 22 47
11 24 51
12 27 56
13 30 62
15 33 68
16 36 75
18 39 82
20 43 91


EIA E96 Codes for Standard Resistor values with + 1% Tolerance
10.0 14.7 21.5 31.6 46.4 68.1
10.2 15.0 22.1 32.4 47.5 69.8
10.5 15.4 22.6 33.2 48.7 71.5
10.7 15.8 23.2 34.0 49.9 73.2
11.0 16.2 23.7 34.8 51.1 75.0
11.3 16.5 24.3 35.7 52.3 76.8
11.5 16.9 24.9 36.5 53.6 78.7
11.8 17.4 25.5 37.4 54.9 80.6
12.1 17.8 26.1 38.3 56.2 82.5
12.4 18.2 26.7 39.2 57.6 84.5
12.7 18.7 27.4 40.2 59.0 86.6
13.0 19.1 28.0 41.2 60.4 88.7
13.3 19.6 28.7 42.2 61.9 90.9
13.7 20.0 29.4 43.2 63.4 93.1
14 20.5 30.1 44.2 64.9 95.3
14.3 21.0 30.9 45.3 66.5 97.6

Resistor Color Codes

Although this page really deals with surface mount resistors.
The color coding for axial leaded resistors is shown for reference.

Resistor Color Codes, Band
5-Color Resistor Band
 
 
Resistor Color Codes
Color Band Significant Digit Multiplier Tolerance Failure Rate
Black 0 1 +/- 20% -
Brown 1 10 +/- 1% 1.0
Red 2 100 +/- 2% 0.1
Orange 3 1000 +/- 3% 0.01
Yellow 4 10000 +/- 4% 0.001
Green 5 100000 Not Used Not Used
Blue 6 1000000
Violet 7 10000000
Gray 8 Not Used
White 9
Gold Not Used +/- 5%
Silver +/- 10%
No color band +/- 20%

Color Coding Notes

Resistor Sizes
Resistor Color Bands

The Failure Band is only used with Military specification resistors, use the link below to view resistor Mil Specs [Military Standards].
The table above shows a 4-band resistor color code [not counting the failure rate band].
Five band resistor color codes are also possible, with the fifth band being used as another significant digit. [Military Spec Resistors]
It's common to see these color bands on 5%, 10% and 20% resistors,
however in many cases 1% resistors have the value printed on the device [in text, with no color code].
Resistors may not have a color code at all, but may instead display a 3 or 4 digit code.
Surface mount resistors do not use color bands or color codes, but a printed value instead.

Resistor Design Hints

As a rule the larger the physical size of the resistor, the greater the possible power dissipation.
The axial-leaded resistors shown in the graphic above are actually used in a government document.
Refer to the page covering Resistor High Temperature Operating Conditions [or power derating].

Fixed Resistor Types [Terms defined in the Resistor Dictionary]
Carbon Composition Resistor types: Ground carbon is the most common.
Wirewound Resistor types: Heat-Sinked, Phenlic, Ceramic, Flameproof, Enamel, and Silicone Coated styles
Film Resistor types: Cermet, Carbon Film, Metal Film, and Metal Oxide Film.

This page lists the Standard Resistor Values for both 1% and 5% tolerance.
Military Resistor Specifications are listed on this page: Resistor MIL Specs, Dictionary of Resistor Terms
Resistor manufacturers are listed on the Resistor vendor page.
Additional related Passive Component Manufacturers, as in component suppliers.
OEM resistor and electronic component distributors may be found by hitting the Distributors icon below.




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Modified 2/29/12
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