This system of colour coding is now obsolete but there are still many old capacitors around. First, most will have three numbers, but sometimes there are. Here is standard capacitor color code values chart including disc, ceramic capacitors. Generally, the actual values of capacitance, voltage or tolerance are marked onto the body of the capacitors in the form of alphanumeric. Nowadays, small capacitors such as film or disk types conform to the bs1852 standard and its new replacement, bs en 60062, were the colours have been replaced by a letter or number coded. But it is difficult to identify the values in the case of old capacitors. In many instances where the capacitor is small no voltage coding is provided and care must be taken when using a capacitor without any knowledge of its working voltage. Colour code carbon resistors for resistors bc d tol and c10pf c download our color code pdf for reference. There are many different types of capacitors, but typically most do not have color coding like resistors. Capacitor colour codes and colour code descriptions. The capacitor colour code system was used for many years on unpolarised polyester and mica moulded capacitors.
Updated resistor color code pdf chart resistor color. Colour code carbon resistors for resistors bc d tol and c10pf c capacitors note. A separate code, the 25pair color code, is used to identify wires in some telecommunications cables. Capacitor that has value in pf may be marked straight away in. Ceramic capacitor may have 3 or 4 numbers at its body. These colour codes are used from many years for nonpolarized capacitors like disc and ceramic capacitors. How to read capacitor codes large capacitor have the value printed plainly on them, such as 10. Tolerance it indicates how much more or less the actual capacitance of the capacitor 3.
Some capacitors will have their capacitance and voltage ratings printed directly on the component, but some may have a three or four digit code. Generally, the actual values of capacitance, voltage or tolerance are marked onto the body of the capacitors in the form of. To download the online capacitor color code script for offline use on pc, iphone or android, ask for price. Capacitor color code value calculator online tool dcode. The system that uses various types of colors to display various information is termed as the color code or. Capacitor colour code and markings capacitor resistor scribd. Capacitor colour code and markings free download as pdf file. The working voltage for a capacitor is very important and therefore this parameter is often marked on capacitors and particularly in situations where there is space for alphanumeric coding. Standard capacitor color codes voltage across capacitor. Resistor color code system resistor color coding system applies to carbon film resistors, metal oxide film resistors, fusible resistors, precision metal film resistors, and wirewound resistors cylindrical with enlarged ends of the axial lead type.
Usually the first two digits of the code represent part of the value. Let us see an example of ceramic or disc capacitor for calculating the color code on it. Heres a clear explanation of what these codes mean and how to read them. General capacitance codebreaker charts picofarad pf nanofarad nf microfarad mf,uf or mfd capacitance code 1 or 1n 0. The absence of a tolerance band indicates 20 00 tolerance for resistors and refer to data on specific types for capacitors.
Capacitor tolerance letter codes and capacitor voltage. Value value is marked on the capacitor directly or in colour codes 2. In our previous post we saw that there are many different types of resistor available that can be used in both electrical and electronic circuits. In general, four or more than four colors or dots are used to mark capacitors. Capacitor colour codes and colour code descriptions elprocus. Pdf an educational note about the classic color coding of electronic components. Resistor color code system how to read the resistor code. If we consider a four color band capacitor, then the first and second colors marked on the capacitor represents the value of the capacitor and the third color band represents the decimal multiplier in picofarads. An electronic color code is used to indicate the values or ratings of electronic components, usually for resistors, but also for capacitors, inductors, diodes and others. Different codes are used for wire leads on devices such as transformers or in building wiring.
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