Ceramic Capacitor Tolerance

A concise guide to ceramic capacitor types march 30 2018 by robert keim this technical brief attempts to dispel some of the fog that surrounds the three character cryptograms used to describe ceramic caps.

Ceramic capacitor tolerance.

Ceramic capacitor definition a ceramic capacitor is a capacitor which uses a ceramic material as the dielectric. In addition to the capacitance value and possibly the working voltage or breakdown voltage the capacitor may be marked by its tolerance. Ceramic capacitors are generally smaller than types like electrolytic capacitors and therefore the markings need to be more concise. Capacitor ratings aren t all that precise but you can at least work out how imprecise the ratings are by deciphering the following letter tolerance codes.

The two most common types are multi layer ceramic capacitors and ceramic disc capacitors. Within the ceramic capacitor family there are many forms of ceramic dielectric that are used. If you re unsure about an unusual marking s. A variety of schemes may be.

All capacitors have a tolerance rating that can range from 20 to as high as 80 for aluminium electrolytic s affecting its actual or real value. I have a ceramic capacitor that reads 101 suntan and nothing else reading up on how to interpret capacitor labels i believe this capacitor is 100pf. Some capacitors have a tolerance code. Class 1 and class 2.

Common types include c0g np0 x7r y5v z5u although there are many more. There are several tolerance marking systems used. I m having difficulties trying to determine its tolerance. Characteristics precision and tolerances.

Code tolerance b 0 1 pf c 0 25 pf d 0 5 pf f 1 g 2 j 5 k 10 m 20 z. With these guidelines you should be able to quickly check the specs of any capacitor you are using. All of the information i have read says there should be a letter designation which determines the tolerance but there is none. Two of the most common are shown here.

Technical article x7r x5r c0g. Smaller ceramic capacitors can have a nominal value as low as one pico farad 1pf while larger electrolytic s can have a nominal capacitance value of up to one farad 1f. The ceramic capacitor gains its name from the fact that it uses ceramic materials for its dielectric. The code used is actually the same as that used with resistors as it utilises the eia scheme.

There are two classes of ceramic capacitors available today.