Ceramic Capacitor Marking Guide

Don t get thrown by fd this is just another abbreviation for farad.

Ceramic capacitor marking guide.

Ceramic disc capacitors are usually through hole components and are falling out of favor due to their size. They are very easy to decode to find the value. Surface mount capacitors are often very small and do not have the space for markings. Smd ceramic capacitor codes.

Typically the markings on a capacitor may give the figures like 22 and 6v. A variety of schemes may be used. Ceramic disc capacitor code label will normally consist of three numbers followed by a letter. Mlccs are used instead if capacitance values allow.

Multi layer ceramic capacitor mlcc. For example mmfd is the same as mmf beware single letter markings such as. When the first two numbers are multiplied with the multiplier the resulting value is the value of the capacitor in picofarads. The most straightforward marking system for smd tantalum capacitors is where the value is shown.

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. Read the capacitance value. The marking format consist of three figures is generally used for the capacitors which has sufficient space available such as is evident in the ceramic capacitors.

Click here for resistor colour code and smd resistor code. Smd tantalum capacitor markings. Ceramic disc capacitors have a capacitance value of 10pf to 100μf with a wide variety of voltage ratings between 16 volts to 15 kv and more. Ignore capital letters in the units.

For example mf is just a variation on mf it is definitely not a megafarad. The top 683 marking indicates the capacitance value which is 68 000 picofarads pf. The third digit is the multiplier which is 1000. The first two numbers describe the value of the capacitor and the third number is the number of zeros in the multiplier.

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. Ceramic disc capacitors have two to three digits code printed on them. The letter j signifies the tolerance of 5. The marking of a bar can be observed in some of the capacitors across their one end denoting the capacitor s polarity.