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Color Code For 10k Ohm Resistor,How To Identify Resistor Colour Codes

Color Code For 10k Ohm Resistor,How To Identify Resistor Colour Codes

September 26 , 2023 0

The unassuming resistor is the lowest cost component in our manufacturing box, but it's also very useful. We've shown you how to use resistors in your projects before, but the focus of this guide is to understand the coloured strips that surround the centre of the resistor. These resistor colour codes tell us exactly how many ohms of current each unit handles.How do we read resistor colour codes? Why do some resistor colour codes have four bands and others have five? What resistors do LEDs need? We answer all these questions and give you the tools to quickly calculate the correct resistors for all your projects.

Resistor Colour Codes

How To Read Resistor Symbol Codes: Reading Resistor Colour Codes From Left To Right

Resistors have no polarity, so they can be used in any direction in a circuit. However, to identify the correct resistor colour code value, we need to understand the colour bands on the resistors. On a typical four band hobby grade resistor, there are three colours in a group. These are the first second significant digit and the multiplier. The last band is the resistor's tolerance, a margin of error if you will. For most hobbyists, a 5% (gold) tolerance is perfect and common. If we create sensitive circuits, such as audio and video projects, we only need the extra precision. We can always find the tolerance band because it is the only band printed on the "shoulder" of the resistor. Look for this band to identify the direction of the resistor.

Three Band Resistor Colour Codes

One band colour code is rarely used The first band from the left indicates the first significant digit of the resistance The second band indicates the second significant digit. The third band indicates the multiplier The tolerance of a three-ring resistor is typically 20%. A table of colour codes corresponding to the three band resistors is shown below

For example, if the colours on the resistor are yellow, purple and red in that order from the left, the resistance can be calculated as
47 × 102 ± 20 %. This is 4.7 KΩ ± 20 %.
This means that the resistance value is in the range of 3760 Ω to 5640 Ω.

Four Band Resistor Colour Codes

The four-ring colour code is the most common representation in resistors The first two bands from the left are used to indicate the first and second significant digits of the resistor The third band is used to indicate the multiplier
The fourth band is used to indicate the tolerance
There is a significant gap between the second and fourth bands. This gap helps to resolve the reading direction. The colour code table for the four band resistors is shown below.

For example, if the colours on the four-band resistor are green, black, red and yellow in that order, the resistance value is calculated as 50 * 104 ± 2 % = 500KΩ ± 2 %.

Five Band Resistor Colour Codes

High-precision resistors have an additional band to indicate the third RMS value of the resistor. The remaining bands indicate the same as the four band colour code.
The first three bands are used to indicate the first three RMS values of the resistor The fourth and fifth bands are used to indicate the multiplier and tolerance respectively There is an exception when the fourth band is gold or silver. In this case, the first two bands indicate the two effective numbers of the resistance.
The third band is used to indicate the multiplier, the fourth band is used for the tolerance, and the fifth band is used to indicate the temperature coefficient in ppm/K. A table of colour codes for the five bands of resistors is shown below.

For example, if the colours on the five-section resistor are red, blue, black, orange and grey in that order, the resistance value is calculated as 260 x 103 ± 0.05 = 260 KΩ ± 0.05%.

Six Band Resistor Colour Codes

For high precision resistors, there is an extra band to indicate the temperature coefficient.

The remaining bands are the same as the five band resistors.

The most common colour used for the sixth band is black, which represents 100ppm / K. This indicates that for a 10 change in 0C at temperature, the resistance value can have a 0ppm / K value.

This indicates that for a change of 10 of 0C in temperature, the resistance value can have a change of 0.1%.

Normally, the sixth band represents the temperature coefficient. However, in some cases, it may represent reliability and failure rate.

The colour code table for six ring resistors is shown below

For example, if the colours on the six-band resistor are orange, green, white, blue, gold and black in that order, the resistance is calculated as 359 × 106 ± 5% 100 ppm/K = 359MΩ ± 5% 100 ppm/K.

There Are Two Cases Of 10k Resistor Colour Ring Colours:

If it is a four-colour ring resistor, they are: brown, black, orange, and any one colour. The first colour ring indicates that the largest digit of the resistance value is 1, which is brown. The second colour ring indicates that the second digit of the resistance value is 0, i.e. black. The third colour ring indicates that the multiplier of the resistance value is 1k, which is orange. The fourth colour ring indicates the permissible deviation (precision) of the resistance value, just select the precision you need.

If it is a five-colour ring resistor, it is: brown, black, black, red, any one colour. The first colour ring indicates that the largest digit of the resistance value is 1, i.e. brown; the second colour ring indicates that the second digit of the resistance value is 0, i.e. black; the third colour ring indicates that the third digit of the resistance value is 0, i.e. black; the fourth colour ring indicates that the multiplier of the resistance value is 100, i.e. red; and the fifth colour ring indicates the tolerance range, just choose the tolerance range you need.