Vintage Ceramic Capacitor Markings

Ceramic capacitors are generally smaller than types like electrolytic capacitors and therefore the markings need to be more concise.

Vintage ceramic capacitor markings. Auto radio antenna jacks plugs. 7 is not. For example 102j with a black cap would a 1000 pf 5 c0g. There are several tolerance marking systems used.

The letter j signifies the tolerance of 5. When the first two numbers are multiplied with the multiplier the. In addition to the capacitance value and possibly the working voltage or breakdown voltage the capacitor may be marked by its tolerance. 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.

Sometimes figures such as 10n will be seen and this indicates a 10nf capacitor. 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. Click here for resistor colour code and smd resistor code ceramic disc capacitors have two to three digits code printed on them. Ceramic disc capacitor code label will normally consist of three numbers followed by a letter.

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. The first two significant digits represent the first two digits of the actual value which is 47. Method of finding the value meaning of codes of capacitor.

Chassis bottom plates natural aluminum finish. A variety of schemes may be used. The first is used with small ceramic capacitors and appears as a single letter. The first two numbers describe the value of the capacitor and the third number is the number of zeros in the multiplier.

Polypropylene film 1600v capacitor markings. The third digit is the multiplier which is 1000. Different types of capacitors ceramic capacitor polarity and symbol. The top 683 marking indicates the capacitance value which is 68 000 picofarads pf.

The ceramic capacitor described in more detail in this article. 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. Two of the most common are shown here. They are very easy to decode to find the value.

Often the value may be given in picofarads. The ceramic capacitor is a non polarity device which means they do no have polarities.