Ceramic Disk Capacitor Markings

Two of the most common are shown here.

Ceramic disk capacitor markings.

This code indicates what the capacitance of the capacitor is. The early style of the ceramic disc capacitor could be more cheaply produced than the common ceramic tube capacitors in the 1950s and 1970s. Ceramic disc capacitors like the one on the left are printed with a code. The example capacitor has a 3 digit number printed on it 103.

Ceramic disc capacitor code label will normally consist of three numbers followed by a letter. The first two numbers describe the value of the capacitor and the third number is the number of zeros in the multiplier. A variety of schemes may be used. This indicates a 22µf capacitor with a maximum voltage of 6v.

There are several tolerance marking systems used. The first two significant digits represent the first two digits of the actual value which is 47. The third digit is the multiplier which is 1000. Ceramic capacitors are generally smaller than types like electrolytic capacitors and therefore the markings need to be more concise.

Ceramic capacitors which are usually tiny pancakes with two pins typically list the tolerance value as one letter immediately after the three digit capacitance value. Read the tolerance code on ceramic capacitors. Taking a look. In addition to the capacitance value and possibly the working voltage or breakdown voltage the capacitor may be marked by its tolerance.

An american company in the midst of the apollo program launched in 1961 pioneered the stacking of multiple discs to create a monolithic block. The letter j signifies the tolerance of 5. Method of finding the value meaning of codes of capacitor. The first two digits in this case the 10 give us the first part of the value.

Typically the markings on a capacitor may give the figures like 22 and 6v. Click here for resistor colour code and smd resistor code ceramic disc capacitors have two to three digits code printed on them. They are very easy to decode to find the value.