The first two bands provide significant figures: the first gives the ten and the second the unit.
Each resistor type is described in the following paragraphs. There are three types of resistors depending on the number of bands: 4-band, 5-band and 6-band resistors. In other cases, it is the largest band that must be placed on the right or the band placed closest the extremity you must put on the left. Usually, the resistor has a gold or silver band that must be placed on the right. You must first turn the resistor the right way up. The most widely used for consumer electronics is the E24 series (tolerance ±5%): in this series, 24 standard values are defined and for which it is possible to use a multiple of 10 (it is known as «decade»). These values are classified by series associated with a specific tolerance. Resistor values are standardized and defined by the international standard «IEC 60063» entitled «Preferred number series for resistors and capacitors». It is defined by the international standard IEC 60062 entitled "Marking codes for resistors and capacitors".Įxample of a resistor (source ): The correspondence between the digits and the colors of the bands is named the resistor color code: this code is used to determine the value of a resistor or indicate its values by using a color code. In most cases, the resistor is presented with colored rings (bands) around it. This information is deliberately brief - but sufficient - because of the many electronic lessons that can be found on the Internet.
#220 RESISTOR COLOR CODE HOW TO#
This lesson explains how to read the color code painted on the bands of the resistors.