![]() for manimum resistance value, 21kΩ or 21000Ω – 5% = 19,950Ωįinally, we get the final value of resistance is in the range of 22,050 to 19,950 Ω.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. We hope you found this article helpful and take a look at our electronics component clearance page if you want to shop resistors or other components.Note: I know, it is not easy to remember the value corresponding to each color band. Make sure to use the image above to determine what colors correspond to which values and not to rely on the mnemonic. One thing to keep in mind is that the mnemonic applies only to the first few bands of the resistors, the last two bands are always the multiplier (2nd to last) and tolerance (last). While not electronically themed, the mnemonic definitely made it easier for us at Circuit Specialists to memorize the resistor color codes. One of our favorite mnemonics, inspired by the Russians, that interprets the color code chart to a phrase is: One useful trick that you may have practiced using in school is coming up with a mnemonic to help. Memorizing these resistor color codes can be a tricky thing. Resistor color codes guide for 4-band, 5-band, 6-band Keep in mind the colors and corresponding numeric values don’t change between these resistors, all that changes is the position of the multiplier and tolerance. As you’ll see you may encounter resistors with 4-bands, 5-bands, and 6-bands. The reason for this is that you want to make sure there is only one path between the leads of your meter and that being across the resistor, if you are measuring on an unfamiliar board there may be traces that lead to other paths of non-infinite resistance between the legs, skewing the actual measured value.Ī helpful, commonly used guide can be found below. One thing to keep in mind is that you should always remove a resistor from the board prior to measuring its resistance with your multimeter, if you are unsure of the value. Sometimes, discerning the colors on a burnt-up resistor can be a tricky thing. If you’re looking for discounted electronic components then check out our new Stock Clearance page where items are as much as 90% off MSRP. Knowing what resistor color codes equate to particular resistance values can mean saving hundreds of dollars! Many of our resistors on our site sell for $0.10 or less so you can imagine how inexpensive a single resistor replacement can be with the right tools as compared to replacing an entire printed circuit board assembly.įor even more assistance determining resistance from the resistor color code then take a look at our handy Resistor Color Calculatorthat will link you directly to the corresponding resistor item pages if available. ![]() Resistor color codes can be a tricky thing.
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