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).
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.
- 10k / 10k ohm Resistor Colour Code
Value 10 kΩ Type 4 Band Colour Code Colour Code Brown, Black, Orange, Gold Multiplier Orange, 1000 Tolerance Gold Band ±5%
- 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.
- 10R / 10 ohm Resistor Colour Code
Value 10 Ω Type 4 Band Colour Code Colour Code Brown, Black, Black, Gold Multiplier Black, 1 Tolerance Gold Band ±5%
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.
- Otis Frank Boykin
- 4 band resistor. The four band color code is the most common variation. These resistors have two bands for the resistance value, one multiplier and one tolerance band. In the example on the left these bands are green, blue, red and gold.
- 4k7 / 4.7k ohm Resistor Colour Code
Value 4.7 kΩ / 4700 Ω Type 4 Band Colour Code Colour Code Yellow, Violet, Red, Gold Multiplier Red, 100 Tolerance Gold Band ±5%
- 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.
- Method 2 Reading Compact Capacitor Codes
- Write down the first two digits of the capacitance.
- Use the third digit as a zero multiplier.
- Work out the capacitance units from context.
- Read codes that contain letters instead.
- Read the tolerance code on ceramic capacitors.
- Read letter-number-letter tolerance values.
- The beige-colored body of a resistor is often an indication that its tolerance is 5%, while a blue-colored body often indicates a tolerance of 1% or 2%. The blue-bodied resistors and the dark brown resistor contain metal-oxide film elements, while the beige-bodied resistors and the green resistor contain carbon film.
- More resistance means less current is flowing through the circuit. Equivalent resistance is a different way of indicating 'total' resistance, which we calculate differently for series and parallel circuits. In a series circuit, the different components are connected in a single, continuous loop.
Updated: 3rd October 2019