What is a resistor color code?

An electronic color code is used to indicate the values or ratings of electronic components, usually for resistors, but also for capacitors, inductors, diodes and others. A separate code, the 25-pair color code, is used to identify wires in some telecommunications cables.
A.

What are the colors of resistors?

Components and wires are coded with colors to identify their value and function. The colors brown, red, green, blue, and violet are used as tolerance codes on 5-band resistors only. All 5-band resistors use a colored tolerance band.
  • What color is a 330 ohm resistor?

    330R / 330 ohm Resistor Colour Code
    Value330 Ω
    Type4 Band Colour Code System
    Colour CodeOrange, Orange, Brown, Gold
    MultiplierBrown, 10
    ToleranceGold Band ±5%
  • What is the color code for a 10 ohm resistor?

    10R / 10 ohm Resistor Colour Code
    Value10 Ω
    Type4 Band Colour Code
    Colour CodeBrown, Black, Black, Gold
    MultiplierBlack, 1
    ToleranceGold Band ±5%
  • What is a resistor made up of?

    Resistor composition. Resistors can be constructed out of a variety of materials. Most common, modern resistors are made out of either a carbon, metal, or metal-oxide film. In these resistors, a thin film of conductive (though still resistive) material is wrapped in a helix around and covered by an insulating material.
B.

How do you read a resistor color code?

Steps
  1. Position the resistor with the gold or silver color band to the right..
  2. Read the color sequence that must be decoded to determine resistance.
  3. Determine the coded number for the resistive value.
  4. Determine the tolerance of the resistor.
  5. Determine the decoded number for the resistive value.
  • How do you read a capacitor?

    Method 2 Reading Compact Capacitor Codes
    1. Write down the first two digits of the capacitance.
    2. Use the third digit as a zero multiplier.
    3. Work out the capacitance units from context.
    4. Read codes that contain letters instead.
    5. Read the tolerance code on ceramic capacitors.
    6. Read letter-number-letter tolerance values.
  • What is equivalent resistance in a parallel circuit?

    Voltage is the same across each component of the parallel circuit. The sum of the currents through each path is equal to the total current that flows from the source. You can find total resistance in a Parallel circuit with the following formula: 1/Rt = 1/R1 + 1/R2 + 1/R3 +
  • Which side of the resistor do I read from?

    Orient the resistor so you can read the stripes properly. You should read the stripes from left to right. The first stripe is the one that's closest to one end of the resistor. If this stripe is on the right side of the resistor, turn the resistor around so the first stripe is on the left.
C.

How can we calculate tolerance value of resistors?

The tolerance band is silver, so we multiply our resistance by 0.1. This means that our resistor's value can be as high as 16.5 Ω or as low as 13.5 Ω. For the third resistor, we'll perform the calculation in an alternative way. Take the nominal value and multiply it by 1 + your tolerance, which is (1+0.1).
  • What is a resistor color code?

    An electronic color code is used to indicate the values or ratings of electronic components, usually for resistors, but also for capacitors, inductors, diodes and others. A separate code, the 25-pair color code, is used to identify wires in some telecommunications cables.
  • What is the use of a carbon resistor?

    Carbon Resistors. The most common type for electronics use is the carbon resistor. They are made in different physical sizes with power dissipation limits commonly from 1 watt down to 1/8 watt. The resistance value and tolerance can be determined from the standard resistor color code.
  • What is a resistor made up of?

    Resistor composition. Resistors can be constructed out of a variety of materials. Most common, modern resistors are made out of either a carbon, metal, or metal-oxide film. In these resistors, a thin film of conductive (though still resistive) material is wrapped in a helix around and covered by an insulating material.

Updated: 3rd October 2019

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