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Well-known member
A little confused here.

I thought tantalums were one kind of capacitor and polymers were another kind.

If when you refer to polymer tantalums, you mean the ones that come in tin cans similar to the electrolytics they replace, then these don’t need derating, i.e. you don’t need to substitute a 16v with a 25v.
This video explains the reasons why you might want to go with 25v polymer tantalums. I did and they have been perfect.



Well-known member
Thanks - I was confused as I thought polymer and tantalum were different things.
There are aluminum, aluminum polymer, tantalum, and tantalum polymer electrolytic capacitors. It has been my experience that when people talk of “polymer capacitors,” they are usually referring to aluminum polymer.