Vintage Ceramic Capacitor Markings

Sometimes figures such as 10n will be seen and this indicates a 10nf capacitor.

Vintage ceramic capacitor markings.

The third digit is the multiplier which is 1000. The first is used with small ceramic capacitors and appears as a single letter. Different types of capacitors ceramic capacitor polarity and symbol. These will also use a xxm format to indicate value where the m is the multiplier and a tolerance letter from table 5 above.

The above image shows a mylar film capacitor. Method of finding the value meaning of codes of capacitor. When the first two numbers are multiplied with the multiplier the. 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.

Click here for resistor colour code and smd resistor code ceramic disc capacitors have two to three digits code printed on them. The first two numbers describe the value of the capacitor and the third number is the number of zeros in the multiplier. Two of the most common are shown here. Some ceramic disks wear a color skull cap to indicate the dielectric.

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. A variety of schemes may be used. Polypropylene film 1600v capacitor markings. There are three exceptions for the last digit.

The letter j signifies the tolerance of 5. Chassis bottom plates natural aluminum finish. Auto radio antenna jacks plugs. Often the value may be given in picofarads.

The top 683 marking indicates the capacitance value which is 68 000 picofarads pf. For example 102j with a black cap would a 1000 pf 5 c0g. In addition to the capacitance value and possibly the working voltage or breakdown voltage the capacitor may be marked by its tolerance. 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. The first two significant digits represent the first two digits of the actual value which is 47. This letter represents the tolerance of the capacitor meaning how close the actual value of the capacitor can be expected to be to the indicated value of the capacitor. The ceramic capacitor is a non polarity device which means they do no have polarities.

7 is not. They are very easy to decode to find the value.