#4 band resistor color code chart code#
Also depending on the component’s color code adding Gold and Silver to the multiplier, divide by 10 for gold or divide by 100 for silver. The multiplier is the same colors as the significant digits only you multiply in the tens depending on the color, I move the decimal place over the number of zeros indicated by the color’s number, nothing for black, one zero for brown, two zeros for red, and so on just like the significant digits. Starting at black for zero, brown for one, red for two, orange for three, yellow for four, green for five, blue for six, violet for seven, gray for eight, and white for nine. The EIA standard color code for significant numbers start at two significant digits and go up to four significant digits in some components and semiconductors. Most color codes read from left to right with a gap on the right side and round components may have the gap on the bottom. The EIA standard color code used in electronics is simple although through the year’s colors and the color bars have remained basically the same, some of their values have changed with technology.
These are some of the color codes I use when working on electronics. Looking up the components values and properties from its color code is easier than reverse engineering from scratch. I can reverse engineer the circuit and guess at what the appropriate replacement component is and its value or I can look up the color code and select a modern replacement that will work. Older devices often have color coded components not seen in newer electronics today, and the exact component quite often is no longer available. I work on many older electronic devices capacitors and resistors can go out of tolerance with time.
They are still in use on many devices used in electronics today. The color codes we all know and love come from EIA standards, (Electronics Industries Association) and they were used on almost every device at one time or another, even vacuum tubes. When I looked up color codes here at Instructables, I was surprised to find just a few one page Instructables on component color codes. If you have any queries, you can hit the comment in given comment.I have been reverse engineering since before the advent of solid state circuits. Once you know to calculate resistance using colour Code of resistors, it will be easy for you to design and using resistors in the electronics circuit.
The 5% tolerance resistor may have a maximum and minimum value of resistance. Last is the Gold band having tolerance value in 5% (0.05) from the table. 21įrom the table, the third orange band has value 1000. The first two digits of the band show the value of resistance 2 and 1 i.e. The Red band of the resistance value is 2 and the brown band of the resistance value is 1 from the table. So the final formula you can use to calculate resistance: Resistance = ((10x + y) z) (p/100) (Unit- Ohm)Ĭonsider, a resistor is having four different colour bands red, brown, orange, and gold respectively as shown in the below diagram.įirstly choose the value of colour from the table. (Says z)īand D: The fourth band (D) or last band shows the tolerance in percentage (%). (Says y)īand C: Third colour band (C) is the decimal multiplier and gives the number of zero after two digits. (Says x)īand B: The second colour band (B) represents the second digit of the numerical value of resistance.
Here, each band position and its colour has specific significance to calculate resistance value.īand A: A first colour band (A) represents the first digit of the numerical value of the resistance. BB ROY of Great Britain had a Very Good Wife. You can use this simple phrase to remember the sequence color band and its values. Note: I know, it is not easy to remember the value corresponding to each color band.