For example, for the three band resistor color codes shown (brown, black and red), the resistance value according to the table would be:.. 0 x (100) = 1000Ω. Band 5: Tolerance value (%) For example, a resistor with a color band pattern of brown, red, orange, red, gold yields the first digit as 1, the second digit as 2, the third digit as 3, and a multiplier of 10,000. Both of these conversions are available for 4 band, 5 band, and 6 band resistors. The correct tolerance limits should be 199.8K - 200.2K. The larger the resistor tolerance, the more it may vary, either up or down, from its nominal value. If you calculate a 200K resistor with a tolerance of 0.1%, the calculator will give a tolerance floor of 180K and a ceiling of 220K, which is correct for 10% tolerance, not 0.1%. This is accurate for linear relations, since the TCR is constant at every temperature. Calculating the 4-band resistors tolerance. However, many materials have a non linear coefficient. If you don’t know the individual values, use the Ohm’s Law equation, where resistance = voltage divided by current. Tolerance = value of resistor x value of tolerance band = 220 Ω x 10% = 22 Ω ; 220 Ω stated resistance +/- 22 Ω tolerance means that the resistor could range in actual value from as much as 242 Ω to as little as 198 Ω. Multiply the 2nd digit x. The tolerance of a resistor is the deviation that a resistor may vary from its nominal value resistance, measured at 25°C with no load applied. I am replacing the same based on the value of the healthy resister, i.e. How to find the resistance of a resistor. Resistor gets damaged or burnt due to overheat if it used for high electric power greater than its ratings. What is the 4th band on a resistor? Learn more about electrical, resistor, engineering, circuit MATLAB We are using an encoder circuit, where a SMD resistor is used and i am unable to know about it's tolerance value. These types of resistor’s value is identified by the color pattern of these bands. But I do not know how to calculate the aging tolerance based on the Load Life data which is given as 1% under this condition (+70 °C; 1.5 hours “ON”, 0.5 hours “OFF”; 1000 hours) Any suggestion how to interpret the datasheet for aging tolerance? Resistor color code is simple and easy way to calculate resistance value of a resistor. All you need is the final resistance value from the previous step and the value from the tolerance band of the resistor. For Nichrome for example, a popular alloy for resistors, the relation between temperature and TCR is not linear. As such, a 5% tolerance component will also fit the 10% specification: if the value is within 5%, it will certainly be within 10% as well. Resistor Color Code Chart For a more detailed explanation and practical examples, refer to the article resistors in parallel. Then, divide the voltage across the circuit by the total resistance to find the current. Reply. The fourth band (or 5th for the 5-band and 6-band) indicates the tolerance values. The resistor will visually show your band color choices and display the value of the resistor above Resistor Colour Code Solver is a featured resistor value calculator which offers both color code to value and value to color code conversions. Resistor Calculator Calculate The Value Of Resistors The. Please guide me about the tolerance value. The value written on the resistor is 2200. HOW TO CALCULATE RESISTOR & CERAMIC CAPACITOR VALUE. Ohm’s law equation can be used to calculate resistance value of a conductor. To calculate total resistance in series circuits, look for a single loop with no branching paths. The value of a resistor can be calculated using the colour bands on the resistors casing, find out what each colour means and how to read them with this tutorial. 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