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Resistors - Standard Values

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Preferred number series for resistors according IEC 60063 are indicated below.

Resistors with 20% tolerance

Download and print Resistors - Standard Colors Codes table

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Resistors with 10% tolerance

Resistors with 10% tolerance
ohmkohm
10 100 1 10 100 ..
12 120 1.2 12 120 ..
15 150 1.5 15 150 ..
18 180 1.8 18 180 ..
22 220 2.2 22 220 ..
27 270 2.7 27 270 ..
33 330 3.3 33 330 ..
39 390 3.9 39 390 ..
47 470 4.7 47 470 ..
56 560 5.6 56 560 ..
68 680 6.8 68 680 ..
82 820 8.2 82 820 ..

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Equivalent Expressions of Ohm's Law

Ohm's law (1) can also be expressed as

U = R I                         (2)

or 

R = U / I                       (3)

Download and print the Ohm's Law diagram!

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Ohm's Law

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Resistors - Color Codes Calculator

Color codes for fixed resistors - values and tolerances - online calculator.

Resistors - Letters and Digit Codes

Letter and digit codes to indicating resistor values.

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