Ceramic Capicator Marking

The top 683 marking indicates the capacitance value which is 68 000 picofarads pf.

Ceramic capicator marking.

The first two numbers describe the value of the capacitor and the third number is the number of zeros in the multiplier. Atc provides component and custom integrated packaging solutions for the rf microwave and telecommunications industries atc designs develops manufactures and markets multilayer capacitors single layer capacitors resistive products inductors and custom thin film products for rf microwave and millimeter wave applications. Markings of ceramic capacitor. Method of finding the value meaning of codes of capacitor.

Larger capacitors the cylindrical aluminum electrolyte type or the double layer type use units of microfarads uf or µf equal to 10 6 farads. American technical ceramics corp. Sometimes figures such as 10n will be seen and this indicates a 10nf capacitor. The value of the capacitor is indicated in picofarads.

If you are new to capacitor codes then the best way to start is with a chart because that way you can see the arrangement of the code. The smallest capacitors made from ceramic film or tantalum use units of picofarads pf equal to 10 12 farads. There are several tolerance marking systems used. Ceramic capacitors are generally smaller than types like electrolytic capacitors and therefore the markings need to be more concise.

A ceramic disc capacitor does not have a polarity and connects in any direction on the printed circuit board. In addition to the capacitance value and possibly the working voltage or breakdown voltage the capacitor may be marked by its tolerance. The first is used with small ceramic capacitors and appears as a single letter. To get this value you multiply the leading digits 68 in this case by 10 raised to the power of the last digit 3 and the result is the capacitance in picofarads in this case we get 68x10 3 pf.

There are three exceptions for the last digit. 7 is not. Thus for such concise markings many different types of schemes or solutions are adopted. The above image shows a mylar film capacitor.

Often the value may be given in picofarads. Two of the most common are shown here. The markings on a ceramic capacitor are more concise in nature since it is smaller in size as compared to electrolytic capacitors. A ceramic capacitor is a fixed value capacitor where the ceramic material acts as the dielectric it is constructed of two or more alternating layers of ceramic and a metal layer acting as the electrodes the composition of the ceramic material defines the electrical behavior and therefore applications.

Hence the value of the capacitor above is 47000 pf 5.