Also the tolerance is a +/- value, which means the real value of the resistor is something between +/- 20% of the nominal value of 950 Ohms in this case. To avoid this six band resistor is used. Choose resistor color code to calculate resistance value. If I suffer from color blindness, how can I read the resistance code? Every day at wikiHow, we work hard to give you access to instructions and information that will help you live a better life, whether it's keeping you safer, healthier, or improving your well-being. The value of resistance changes with temperature. Avoid making embarrassing mistakes on Zoom! The value of the resistor is not exact in some scenarios due to damage or aging factor. To calculate the resistance of a resistor, you can select the appropriate color bands in the above resistor color code calculator. Black 0. As I said, some resistors have the fourth band on them. The coding of color is defined in the international standard 1EC60062. Calculating resistance for a 4-band resistor . In some cases, resistors used in military applications have a 5th color band to show the failure rate of the resistor. We use cookies to make wikiHow great. It is assumed that you did not read the bands from outside to inside, which means Silver Green Brown. This article has been viewed 225,094 times. Select a Color. In the three bands first color indicates 1st digit, the second color indicates 2nd digit, the third color indicates 3rd digit. The coding is defined in the international standard IEC 60062:2016. Resistor values are often indicated with color codes. It describes the coding standard for both resistors and capacitors. The six band color indicates the amount of resistance value that will change with respect to temperature. This means for a value of 2.53 MΩ, the resistance value varies from 2529999.9 ohms to 2530000.1 ohms. The colored bands on the resistors denote the value of resistance in resistor, tolerance and sometimes temperature coefficient. If the bands on a resistor are brown, green, and silver, what is the value of the resistor? wikiHow is where trusted research and expert knowledge come together. The tolerance band has increased space between 3 or 4 bands. Our Resistor Color Code Calculator is a handy tool for reading carbon-composition resistors whether it's a 4-band, 5-band or 6-band type. On every pinned (through hole) resistor, there are colored bands which denote the value of resistance in the resistor. To find the resistance of a five band resistor, here is the calculation. This standard describes the marking codes for resistors and capacitors. The fourth band shows the tolerance and mostly seen in high precision resistors. Number of Bands. Also, it is advisable to read the datasheet of the manufacturer to get the better idea of how to calculate resistance value from their color code.
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