☑ How To Read Smd Electrolytic Capacitor Values

An electrolytic capacitor is a polarized capacitor which uses an electrolyte to achieve a larger capacitance than other capacitor types. A capacitor labeled p1 has a value of 01 picofarads.

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Traditionally this mark designates the end on an aluminum electrolytic capacitor which are usually shaped like tin cans.

How to read smd electrolytic capacitor values. Learn to read capacitors labeled with n p or. And one or two numbers. In the case of smd surface mounted electrolytic capacitors there are two basic marking types.

A 220nf electrolytic capacitor will be labeled as 022uf and not 220nf. Electrolytic capacitors are pretty simple to read. There are two terminals ve and ve negative terminal usually indica.

The first two figures refer to the significant figures of the capacitor value and the third one acts as a multiplier. Some value are quite direct like 47 and 16 means 47 microfarad with 16 volt working voltage. As they are quite big compared to the rest the value is directly written in the enclosurethe value unit is also specified but as they have large capacitance values the chosen unit is the microfarad uf almost 100 of the time even when the unit is smaller ie.

Finding value of capacitors electrolytic capacitor electrolytic capacitors are polarized capacitor ve and ve and generally used when very large capacitance values required. Read the capacitance value. When capacitors are labeled in this way the letter represents both the unit and the decimal point between the numbers.

However some smd e caps that have alphabet letter and you need to find out what is the meaning of those alphabet letter. Disregard the bar if it contradicts a or sign or if it is on a non electrolytic capacitor. On tantalum electrolytic capacitors which are very small this mark designates the end.

For example a capacitor labeled 4n7 has a value of 47 nanofarads. Reading the capacitance value in the case of through hole capacitors the capacitance value as well as the maximum rated voltage is printed on the enclosure. The value of the capacitor is denoted in picofarads for ceramic film and tantalum capacitors but for aluminium electrolytic capacitors the value is denoted in microfarads.

If you are repairing mainboard im sure you would have came across smd electrolytic capacitor that have marking on top of the cap. The first one clearly states the value in microfarads and the operating voltage. For example using this approach a 47 mf capacitor with an operating voltage of 25 volts would bear the marking 47 25v.