The sixth temperature coefficient band increases the precision of the resistance value. The insulation of the wire may be solidly colored, or where more combinations are needed, one or two tracer stripes may be added. The higher the value of resistance measured in ohms the lower the current will be.
This range most commonly covers standard carbon film resistors, which are not readily available in values above 10 Megohms - 10M 10 Million Ohms 1R0. Red-jacketed cable is also used for relatively low-voltage fire alarm wiring, but has a much different appearance. Occasionally the colors are jumbled or burnt off.
This last version is used in many circuit diagrams and suppliers catalogues where print may need to be very small to avoid 2. The two first band or the three first indicate a digit each a digit correspond to a color The next band third or fourth indicates a multiplication factor more exactly a power of 10 to the number formed by the two first digits.
The others are specially designed for temperature critical applications. Resistor Color Code Chart We have presented 3 charts below — which are exactly resistor color code charts for 4 band, 5 band and 6 band resistors respectively. You may also be interested in: The numbers represent the same as the first three bands on a 4 band resistor.
Green, blue, red, with silver tolerance band: Finally in case of a 6 band resistor, the last band i. Other tolerance values are shown for completeness.
K M or R are used in place of the decimal point. So here are the key points; 4 band resistor — has 3 color bands on left side and one color band on right side. The tolerance band is sometime more spaced than the previous ones. Hence a standard was formed in 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.
Some include tolerance bands Gold, Silver or None. For a 6-band resistor, an additional temperature coefficient band is provided.
Resistors are color-coded for easy reading. Mains electrical wiring, both in a building and on equipment was once usually red for live, black for neutral, and green for earth, but this was changed as it was a hazard for color-blind people, who might confuse red and green; different countries use different conventions.
Red-jacketed cable is also used for relatively low-voltage fire alarm wiring, but has a much different appearance. Modern personal computer peripheral cables and connectors are color-coded to simplify connection of speakers, microphones, mice, keyboards and other peripherals, usually according to the PC99 scheme.
The resistance value could be stamped or painted on the body of the through-hole resistor, no. That is the number that the resistor may go either way. How to Identify Resistor Color Code The figure below shows the layout of the bands, the multiplier and the tolerance value of a resistor.
Therefore the five band code Table 2. Therefore it can be calculated from Table 2.
The first 2 digits make the number Why is there a difference between theoretical and measured value?. Practice With the Color Code This page is designed to offer unlimited practice at reading and deciphering the resistor color code (which applies to other components as well).
You are welcome to use this page as long as you wish, and to revisit it at any time. Resistor color code chart. The chart below shows how to determine the resistance and tolerance for resistors.
The table can also be used to specify the color of the bands when the values are known. About: This tool is used to decode information for color banded axial lead resistors.
Select the number of bands, then their colors to determine the value and tolerance of the resistors or view all resistors Digi-Key has to offer. Learn more about resistors and resistor color codes. Note: Not all resistor color combinations represent valid or 'standard' resistor values.
Author is not responsible for any damages resulting from use of this program. The color helps us know the resistance of the resistor without measuring it. Resistors and the Color Codes Although the color code is not only for resistors, the ability to read the resistor color code is more required among engineers and scientists.
The Digi-Key Resistor Color Code Calculator is an easy-to-use tool to quickly identify the value of your typical through-hole resistors with 4, 5, or 6 color bands. Color band exceptions There are always exceptions to every rule, and resistors are no different.Resistor color code