Two of the most common are shown here.
Ceramic capacitor marking 103.
The first two numbers describe the value of the capacitor and the third number is the number of zeros in the multiplier.
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.
In addition to the capacitance value and possibly the working voltage or breakdown voltage the capacitor may be marked by its tolerance.
Hence the value of the capacitor above is 47000 pf 5.
Click here for resistor colour code and smd resistor code ceramic disc capacitors have two to three digits code printed on them.
Mouser offers inventory pricing datasheets for 103 ceramic disc capacitors.
47pf 1 000 3 zero s 47 000 pf 47nf or 0 047uf the j indicates a tolerance of 5.
A ceramic disc capacitor does not have a polarity and connects in any direction on the printed circuit board.
Often the value may be given in picofarads.
The 3 digit capacitor code 103 stands for 10 nf in words.
Sometimes figures such as 10n will be seen and this indicates a 10nf capacitor.
Common ceramic capacitor tags capacitor 108 0 1 pf capacitor 158 0 15 pf capacitor 228 0 22 pf capacitor 338 0 33 pf capacitor 478 0 47 pf.
There are several tolerance marking systems used.
The capacitor on the left is of a ceramic disc type capacitor that has the code 473j printed onto its body.
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.
The first is used with small ceramic capacitors and appears as a single letter.
The smallest capacitors made from ceramic film or tantalum use units of picofarads pf equal to 10 12 farads.
A variety of schemes may be used.
Then by just using numbers and letters as codes.
Ceramic capacitors are generally smaller than types like electrolytic capacitors and therefore the markings need to be more concise.
When the first two numbers are multiplied with the multiplier the.