What is the tolerance value of a resistor?

Tolerance is the percentage of error in the resistor’s resistance, or how much more or less you can expect a resistor’s actual measured resistance to be from its stated resistance. A gold tolerance band is 5% tolerance, silver is 10%, and no band at all would mean a 20% tolerance.

Similarly, how you can read the value of a resistor?


  • Position the resistor with the gold or silver color band to the right..
  • Read the color sequence that must be decoded to determine resistance.
  • Determine the coded number for the resistive value.
  • Determine the tolerance of the resistor.
  • Determine the decoded number for the resistive value.
  • How are resistor values measured?

    The electrical resistance of a resistor is measured in ohms. The symbol for an ohm is the greek capital-omega: Ω. The (somewhat roundabout) definition of 1Ω is the resistance between two points where 1 volt (1V) of applied potential energy will push 1 ampere (1A) of current.

    What is the value of the resistor?

    A resistor is a device that opposes the flow of electrical current. The bigger the value of a resistor the more it opposes the current flow. The value of a resistor is given in ohms and is often referred to as its ‘resistance’.

    What color is a 10k resistor?

    10k / 10k ohm Resistor Colour CodeValue10 kΩType4 Band Colour CodeColour CodeBrown, Black, Orange, GoldMultiplierOrange, 1000ToleranceGold Band ±5%

    Why is there a difference between the measured value and the nominal value of the resistors?

    The actual (measured) resistance will vary from the nominal value due to subtle mechanical and chemical differences that occur during manufacturing. The manufacturer specifies the maximum deviation from the nominal value as a ±percentage. This range of deviation is called the tolerance of the resistor family.

    What is the meaning of tolerance in resistor?

    “Tolerance is the percentage of error in the resistor’s resistance, or how much more or less you can expect a resistor’s actual measured resistance to be from its stated resistance. A gold tolerance band is 5%tolerance, silver is 10%, and no band at all would mean a 20% tolerance.” Source: Resistor Color Codes.

    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.

    Why do we use resistor?

    Resistance is the measure of opposition to electric current. A short circuit is an electric circuit offering little or no resistance to the flow of electrons. Short circuits are dangerous with high voltage power sources because the high currents encountered can cause large amounts of heat energy to be released.

    How is tolerance determined?

    The assembly yield is the quality level. It is the percent of assemblies which meet the engineering tolerance requirements. It is calculated by summing the component tolerances to determine the assembly variation, then applying the upper and lower spec limits to the calculated assembly distribution.

    How does a resistor work?

    Devices called resistors let us introduce precisely controlled amounts of resistance into electrical circuits. Photo: Four typical resistors sitting side by side in an electronic circuit. A resistor works by converting electrical energy into heat, which is dissipated into the air.

    What is a resistor used for?

    A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses.

    What is the color code for a 10 ohm resistor?

    10R / 10 ohm Resistor Colour CodeValue10 ΩType4 Band Colour CodeColour CodeBrown, Black, Black, GoldMultiplierBlack, 1ToleranceGold Band ±5%

    What is resistor and its use?

    A resistor is an electrical component that limits or regulates the flow of electrical current in an electronic circuit. Resistors can also be used to provide a specific voltage for an active device such as a transistor.

    Are electrical resistors directional?

    If I understand your question, then yes – resistors are reversible, in the sense that they can be connected to the circuit in either direction. Resistors are not like diodes or capacitors. They do not have a polarity. The conduct (or resist) current equally in both directions of current flow.

    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 Colour coding in safety?

    Safety Color Coding Labels and TapeCOLORMEANINGFluorescent Orange, Orange-RedBiosafetyYellowCautionOrangeWarningGreenSafety

    What is the meaning of tolerance in electronics?

    The fourth and fifth bands are used to determine the percentage tolerance of the resistor. Resistor tolerance is a measure of the resistors variation from the specified resistive value and is a consequence of the manufacturing process and is expressed as a percentage of its “nominal” or preferred value.

    What is tolerance in technical drawing?

    Engineering tolerance is the permissible limit or limits of variation in: a physical dimension; a measured value or physical property of a material, manufactured object, system, or service; in mechanical engineering the space between a bolt and a nut or a hole, etc..

    What is an example of tolerance?

    tol·er·ance. Use tolerance in a sentence. noun. Tolerance is being patient, understanding and accepting of anything different. An example of tolerance is Muslims, Christians and Athiests being friends.

    What is fit and tolerance?

    ‘The extreme permissible values of a dimension are known as limits. The degree of tightness or looseness between two mating parts that are intended to act together is known as the fit of the parts. Tolerance on the other hand is the total amount that a specific dimension is permitted to vary.

    What is difference between tolerance and allowance?

    Tolerance is the limit of random (unintentional) deviation of a dimension from its nominal value. Allowance is the amount of designed (intentional) deviation between two mating dimensions in a fit, which, in combination with their respective tolerances, results into a maximum and minimum clearance or interference.

    What is it grade in tolerance?

    IT Grade refers to the International Tolerance Grade of an industrial process defined in ISO 286. This grade identifies what tolerances a given process can produce for a given dimension. The specific tolerance for a particular IT grade is calculated via the following formula: T is the tolerance in micrometres [µm]

    What is the color code for a 4.7 K resistor?

    4k7 / 4.7k ohm Resistor Colour CodeValue4.7 kΩ / 4700 ΩType4 Band Colour CodeColour CodeYellow, Violet, Red, GoldMultiplierRed, 100ToleranceGold Band ±5%

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