Electrolytic Capacitor Markings: how to interpret them & what they mean

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Discover the meaning of the markings & codes that are found on electrolytic capacitors, and understand how they may affect any electronic circuit designs.
Electrolytic capacitors a have a variety of markings on them that give away a lot about them and its really important to understand them There are many types of electrolytic capacitor from small to large, but they all have markings on them showing which way they should be used in a circuit, and what their value and other specifications might be.
These markings provide information about the polarity (electrolytics are polarised capacitors and need to be used with the correct orientation), value, working voltage, temperature range, tolerance and even the maximum ripple current.
Knowing what the various markings are and what they mean can ensure that the right capacitor is inserted in the right place in a circuit, and with the correct orientation. It is essential for anyone associated with electronics hardware to be able to understand these markings and codes.
Although there are many types of electrolytic capacitor: aluminium electrolytic, tantalum, etc, the type that is most often used is the aluminium electrolytic capacitor. Often the term electrolytic capacitor is used to refer to this type.
More information about electrolytic capacitors can be found at: www.electronics-notes.com/art...
Capacitor codes and markings: www.electronics-notes.com/art...
Associated website: www.electronics-notes.com
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Опубликовано:

15 июн 2024

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Комментарии : 22

@michaczarnecki2143 Месяц назад

Very professional tone and voice! Thank you for the information :)

@ElectronicsNotes Месяц назад

Thanks for your comment. I’m glad you found the video useful.

@Ressy66 Год назад

excellent breakdown, easy to understand for newbies, well done.

@ElectronicsNotes Год назад

Thank you. I’m glad the video was useful.

@k.oldewurtel4261 4 месяца назад

Hi Ian, I love your channel and the content. One question regarding the tolerance markings in 3:31. Are you sure, the "M" is the tolerance? In my opinion this is the brand sign for Matsushita capacitors... I'm looking forward to your answer. Regards Kassen

@khomo12 2 месяца назад

Very nice!👍👍👍

@ElectronicsNotes 2 месяца назад

Thanks for your comment - I’m very pleased you found it useful.

@jamesharder3753 11 месяцев назад

At 1:37 you show this type of capacitor, I've been looking for quite a while now on the one you're showing it's a 7K MVY. I have a couple of these on boards I'm trying to identify the difference between and the only difference is one says CS and says VT and one 82185, other than these the number 47 and 35 V are on all of them except the 82185 is 25 V. What does this labelling mean

@richg.2579 4 месяца назад

Very good I have an axial cap in an old rf amp that looks different than the others. It is black, axial leaded, looks like hot glue or plastic seals the ends where the leads come out. Not sure how to identify it to replace it. It's on a small board next to a transistor that I believe may key the relay in this old tube type amp. I was surprised to see a transistor in a tube amp as I thought if it had tubes it would have no transistors ? Any help appreciated.

@ElectronicsNotes 4 месяца назад

Glad you liked the video. It’s difficult to understand exactly what the capacitor is. The main thing is the value - I assume it us nit possible to see it. It was also not uncommon to use transistors in tube amps because they didn’t need such high voltage supplies and for functions that needed lower voltages the supply could often be drawn from the heaters and then rectified. If you can trace the circuit and see what it does this might give you an idea of the value and required working voltage. You can then select what you think might be the right value, substitute and see if it works ok. Hope this is some help.

@j7ndominica051 9 месяцев назад

When testing capacitors with a multimeter, do I need to observe the polarity?

@ElectronicsNotes 8 месяцев назад

Multimeters do not normally supply much current when measuring on the resistance range, so most capacitors are absolutely fine.

@sadunnakipoglu9471 25 дней назад

Thanks

@ElectronicsNotes 25 дней назад

I’m glad you found the video useful.

@kwacz Год назад

I have a large electrolytic capacitor marked 60-10 dc. What does this mean?? its a metal can and its stamped.

@ElectronicsNotes 11 месяцев назад

That is an unusual marking!

@kwacz 11 месяцев назад

@@ElectronicsNotes i know. I assume ass-u-me it is capacitance - voltage. It is actually stamped on a can that contains three caps in one can. There are three lines like this 1-150 60-10 and 50-100

@yuxizheng8781 10 месяцев назад

Does the bar mean the negative terminal? I am a newbies.

@ElectronicsNotes 10 месяцев назад

Yes it normally does.

@BatsiraiMusuka 10 месяцев назад

Stumbling into this world. I want to learn on my dead monitor (l opened it and all the capacitors were “melted”) I looked and found equivalent ones online. But I’m stuck on two which l can’t match (both are Jamicon 148c2(m) and 208c2(m)) l can’t seem to find those two… which led me to think maybe those numbers mean something else I’m not getting 😅

@ElectronicsNotes 10 месяцев назад

It is not obvious to me - it could be a manufacturers code.

@BatsiraiMusuka 10 месяцев назад

@@ElectronicsNotes they doing a number on this newbie😅 Thank you for replying still 🙏🏾