How To Read Ceramic Disk Capacitor Markings

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

How to read ceramic disk capacitor markings.

Click here for resistor colour code and smd resistor code ceramic disc capacitors have two to three digits code printed on them. A variety of schemes may be used. There are three exceptions for the last digit. 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.

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. The top 683 marking indicates the capacitance value which is 68 000 picofarads pf. Like resistors has some coding which needs to decipher printed digits on ceramic capacitors also needs deciphering.

This is true for capacitors which provide enough space for marking to be printed and include film capacitors disc ceramics and electrolytic capacitors. Read the tolerance code on ceramic capacitors. Method of finding the value meaning of codes of capacitor. When the first two numbers are multiplied with the multiplier the.

Reading values printed on electrolytic capacitors is easy digits on ceramic capacitors need to know some theory. Typically the markings on a capacitor may give the figures like 22 and 6v. 7 is not. These large capacitors provide sufficient space to print markings which shows the tolerance ripple voltage value working voltage and any other parameter associated with the capacitor.

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. The first two numbers describe the value of the capacitor and the third number is the number of zeros in the multiplier. I have always been unaware of the markings on a disc ceramic capacitor such as j m and other symbols. Here is how to read ceramic capacitor values.

They are very easy to decode to find the value. This indicates a 22µf capacitor with a maximum voltage of 6v. The letter j signifies the tolerance of 5.