Posted by Circuits Arena on Saturday, 20 December 2014
Color Coding Chart of Resistor is the artlcle explaining The figure below shows the layout of the bands, the multiplier and the tolerance value of a resistor. For a 6-band resistor, an ad...
The figure below shows the layout of the bands, the multiplier and the
tolerance value of a resistor. For a 6-band resistor, an additional
temperature coefficient band is provided.
4-Band Resistor Color Code Identification:
Let us consider the above color code for the resistor with the bands
BROWN-BLACK-RED-GOLD. Brown corresponds to the value ‘1’ in the color
chart. Black represents ‘0’ and Red represents the multiplier ‘100’.
Thus the value of the resistance to the corresponding color code is
10*100 = 1000 ohms or 1 kilo ohm with the tolerance band being Gold
which represents a tolerance of +/- 5%. Thus the actual value of the 1
kilo ohm can be between 950 ohms and 1050 ohms.
5-Band Resistor Color Code Identification:
YELLOW-VIOLET-BLACK-BROWN-GREY. Yellow corresponds to the value ‘4’ in
the color chart. Violet represents ‘7’ and Black represents the value
‘0’. Brown represents the multiplier ‘10’. Thus the value of the
resistance to the corresponding color code is 470*10 = 4700 ohms or 4.7
kilo ohm with the tolerance band being Grey which represents a tolerance
of +/- 0.05%.
5-Band Resistor Color Code Identification:
we can consider the same color code used for the 5-band, with an
additional temperature coefficient band with a blue color. This shows
that the resistor has a value of 4.7 kilo ohms, with tolerance +/- 0.05%
and with a temperature coefficient of 10 ppm/K.
Color is used in electronics to identify between different components. In the
case of resistors, color coding is used to identify a specific
resistance value, for example a 100 ohms resistor or a 1 kilo ohms
resistor with 5% tolerance. Electronic components like resistors are
very small in size and its difficult to print its value directly on to
the component surface. Hence a standard was formed in 1920 by then Radio
Manufacturers Association (now part of EIA – Electronic Industries
Alliance) to identify values and ratings of electronic components by
printing color codes on them.
