4 band resistor color code chart code#
The four band resistor color code can be used to make fewer precision resistors including tolerances of 5%, 10% & 20%. This code stands for various colors like the following The resistor color coding formula is “BB ROY of Great Britain has a very good wife” which denotes the alphabets of BBROYGBVGW. An automatic resistor color code calculator can also be used to determine the resistance values very quickly. The following table helps in specifying the band colors once the values are recognized. The following chart is used to find out the resistance value of the resistor along with tolerance.
4 band resistor color code chart how to#
Resistor How to Read Resistor Color Code? The resistor color bands range from 3 to 6 where the first two bands specify the value of resistance & the third band is a multiplier.
The color bands on the resistor specified the resistance value, rate of tolerance & sometimes failure rates, or the reliability. The power rating of all the resistors can be marked with color bands that rage up to 1 watt. This was invented by the RMA (Radio Manufacturers Association) in the year 1920s. Each resistor has different color bands on it that denote the electrical resistance. These color bands of the resistor are called resistor color codes. This article discusses what is a resistor color code and how to read it with examples What is a Resistor Color Code? So these standard colors specify the rating, value & tolerance. For each small component, a color code is used to indicate the resistance value instead of printed text. So these values can be measured through the color band concept. Each resistor includes a resistance or resistive value that ranges from ohms to milliohms. These are available in different sizes and shapes. Multimeters are a great way to check any resistors you aren’t sure of, just be sure to follow practical safety guidelines.Resistors are small electrical components, used in several electrical and electronic circuits to restrict the flow of current within the circuit and also to regenerate voltage drop in several ways. You can use a multimeter to find out the actual resistance, but it will also vary slightly with temperature. This means that the actual resistance value could be anywhere from 950 Ω to 1050 Ω. The total resistance is therefore: 1kΩ ± 5% Ω. This example uses a gold band, giving us a tolerance of 5%. The most common values are 5% for gold, and 10% for silver. So the total value of the resistance given by the colors is 10 x 10 2 Ω = 1000 Ω = 1kΩ.īand Four – Tolerance: Gives the value of the tolerance for the resistor. In this case, the third band is red which corresponds to the number 2. The actual multiplier is 10 n, where n is the value of the band color. Therefore the digits from band one and band two are: 10.īand Three – Multiplier: Takes the digits and multiplies them by a value given by this band. This is added to the right of the first digit (from band one). This band is black, which corresponds to the value 0. The first band is brown, which corresponds to the value 1.īand Two – 2nd Digit: The second digit of the resistance value. Resistor color codes always have digits, followed by a multiplier, follower by a tolerance value.įor a four band resistor, each band has a specific role:īand One – 1st Digit: This is the first digit of the resistance value. 1K Resistor Color Chart Band Number Function Color Value 1 1st Digit Brown 1 2 2nd Digit Black 0 3 Multiplier Red x 100 4 Tolerance Gold (or silver) ± 5% Total Value:ġ000 ± 5% Ω How To Read the 1K Resistor Color Code This band is almost always gold or silver, so it is usually easy to identify.Ģ) Look for the gap between the 3rd and 4th band. Capacitor Charge, Discharge and RC Time Constant Calculatorġ) Identify the 4th band first.Metal Oxide Semiconductor Field Effect Transistors (MOSFETs).
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