Ceramic Capacitor Markings

The first two numbers describe the value of the capacitor and the third number is the number of zeros in the multiplier.

Ceramic capacitor markings.

It usually consists of three numbers which indicates the value and a letter which indicates the tolerance. 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. The value of the capacitor is indicated in picofarads. The markings on a ceramic capacitor are more concise in nature since it is smaller in size as compared to electrolytic capacitors.

There are several tolerance marking systems used. The image above is of an electrolytic capacitor marked with 100μf meaning it has a capacitance of 100 microfarads the μ prefix indicates 10 6. Thus for such concise markings many different types of schemes or solutions are adopted. Tables usually provide a means to decode the numbers.

Typical markings let s examine some typical capacitor markings. Expressed differently this is 0 0001 farads. Two of the most common are shown here. Capacitor marking a capacitor marking is a code which indicates the value of the component.

Ceramic disc capacitors have two to three digits code printed on them. Markings of ceramic capacitor. 1µf 10µf 100µf 1000µf the markings on the lytic caps are easily legible the value and units are printed right on the body. Unlike ceramics they are polarized.

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. However there are also calculators available as well. 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. When the first two numbers are multiplied with the multiplier the resulting value is the value of the capacitor in picofarads.

The first two significant digits represent the first two digits of the actual value which is 47. The first is used with small ceramic capacitors and appears as a single letter. Sometimes figures such as 10n will be seen and this indicates a 10nf capacitor. They are very easy to decode to find the value.

Click here for resistor colour code and smd resistor code. A variety of schemes may be used. From left to right. The value is followed with the voltage rating indicating the maximum dc potential that the cap can withstand without damage.

The third digit is the multiplier which is 1000.