Ceramic Disc Capacitor Markings

The above image shows a pair of ceramic disk capacitors labeled only as 10 and 15 these capacitors and all those under 1000pf directly show their capacitance in picofarads.

Ceramic disc capacitor markings.

There are several tolerance marking systems used. Ceramic disc capacitors have two to three digits code printed on them. The first two significant digits represent the first two digits of the actual value which is 47. A guide to understanding ceramic disc capacitor values.

Ceramic disc capacitor code label will normally consist of three numbers followed by a letter. A variety of schemes may be used. They are very easy to decode to find the value. The first is used with small ceramic capacitors and appears as a single letter.

This indicates a 22µf capacitor with a maximum voltage of 6v. The third digit is the multiplier which is 1000. When the first two numbers are multiplied with the multiplier the resulting value is the value of the capacitor in picofarads. Capacitor tolerance markings in addition to the capacitance value and possibly the working voltage or breakdown voltage the capacitor may be marked by its tolerance.

Two of the most common are shown here. The first two numbers describe the value of the capacitor and the third number is the number of zeros in the multiplier. There is no negative indicator as this capacitor doesn t have a dedicated polarity and can be installed either way. Ceramic disc capacitors markings are a two or three digit value this tutorial explains how use the code to determine the capacitance in farads.

Typically the markings on a capacitor may give the figures like 22 and 6v.