How To Read Capacitor Label

September 15, 2019

The third digit is the multiplier which is 1000. This is true of larger capacitors with values of 1 mf or higher if for no other reason that their larger physical size allows the manufacturer to directly print the value on the component.

Reading Part Values

Studying The Color Codes Of Capacitors Eeweb Community

Capacitor Codes Markings Electronics Notes

The resulting number is the capacitance in pf.

How to read capacitor label. Microfarads on your capacitors label can be designated by mfd uf or uf after the number and the voltage will normally be followed by the letter v or vac volts alternating current or a symbol that looks like an s lying on its side. Look for a tolerance value. The above image shows a mylar film capacitor.

The capacitance values for some capacitors are printed directly on the component. Finally the white stripe indicates the negative leg of this capacitor which is generally also the shorter leg. But for other capacitors things arent always so simple.

The first two significant digits represent the first two digits of the actual value which is 47. Check the voltage rating. Number 3 is a multiplier.

The thru hole part kludged onto smd pads will put a lot of stress on those pads and the solder. The only way to know for sure is to read the datasheet. The top 683 marking indicates the capacitance value which is 68000 picofarads pf.

Look for a or sign. If you have a capacitor that has nothing other than a three digit number printed on it the third digit represents the number of zeros to add to the end of the first two digits. They are very easy to decode to find the value.

The digits 10 followed by one additional zero. Ceramic disc capacitor code label will normally consist of three numbers followed by a letter. L three numbers and a letter numbers 1 and 2 are value digits.

Yes you can replace a smd capacitor with a thru hole of the same rating as long as you can mechanically do it and the decreased ruggedness is acceptable to you. For example 101 represents 100 pf. 0 1 1 10 2 100.

Read the capacitance value. How to read a capacitor reading large capacitors know the units of measurement. The letter j signifies the tolerance of 5.

To get this value you multiply the leading digits 68 in this case. When youre building circuits with capacitors youll need to learn to read the value markings which not only designate values but other parameters as well.