Capacitors identification

[mozart1973]

How do you tell the differense between Ecaps and non Ecaps if they look alike. There is no indication of minus or plus and both ends have a groove. What are they?

 

[hassan789]

ecaps = electrolytic caps?
electrolytic capacitors are usually marked. If they look like ceramic capacitors, then it hard to tell of coarse.

Usually, Tantalum caps are the ones that look similar to ceramics... but alot of them are marked. If they are not marked, then it will be hard

 

[mozart1973]

ecaps = electrolytic caps?
electrolytic capacitors are usually marked. If they look like ceramic capacitors, then it hard to tell of coarse.

Usually, Tantalum caps are the ones that look similar to ceramics... but alot of them are marked. If they are not marked, then it will be hard

So if it has no indication of which pin is neg or pos it's a non-Ecap even though it has the same casing?

 

[hassan789]

No. Basically what I'm saying is that if its not marked, you will not know just by looking at it.

for more info, check this video: https://www.youtube.com/watch?v=C2hMMydb0Qc (skip to 01:11)

 

[mozart1973]

No. Basically what I'm saying is that if its not marked, you will not know just by looking at it.

for more info, check this video: https://www.youtube.com/watch?v=C2hMMydb0Qc (skip to 01:11)

He is saying that caps over 1mf are usually Ecaps. Do I need a cap checker to know what it is are is there another way to determine the type?