5268Views11Replies

Author Options:

Can I replace electrolytic caps with tantalum? Answered

I'm thinking of replacing some electrolytic caps with smaller ones to save space. Foresee any problems? I was thinking tantalum just because they looked like they might be smaller. This is for a AAA 1.2-1.5V circuit.

11 Replies

user
royalestel (author)Goodhart2007-10-12

Uh, first link dead. Second link on the comparative surface mount areas for tantalum caps?

Select as Best AnswerUndo Best Answer

user
NachoMahma (author)royalestel2007-10-12

. If I read page 5 of the second link correctly, then you can make the swap. I read it to say the electrical properties are almost the same.

Select as Best AnswerUndo Best Answer

user
royalestel (author)NachoMahma2007-10-12

Well, I'll risk it. Need the space!

Select as Best AnswerUndo Best Answer

user
Goodhart (author)royalestel2007-10-12

I am in agreement, that they are pretty close, the Titanium caps should be "better made" with slighty tighter tolerences, but should be at least as robust as the others. But since you will not be exceeding any voltage restrictions (more then likely), they should work.

Select as Best AnswerUndo Best Answer

user
LasVegas (author)NachoMahma2007-10-12

You can interchange Electrolytic Capacitors with Tantalum Electrolytic Capacitors, but not standard Tanalum Capacitors. In very low power situations, you may get away with it though.

Select as Best AnswerUndo Best Answer

user
Goodhart (author)royalestel2007-10-12

ugh

Sorry about that....it was ok when I posted, and now I get a

Session Cookie Error

I can't seem to win today....sigh

Select as Best AnswerUndo Best Answer

user
guyfrom7up (author)Goodhart2007-10-12

I'm prertty sure you could, but not the other way around. Tantalum are hardier, but more expensive. I think you can do it.

Select as Best AnswerUndo Best Answer

user
Patrick Pending (author)2007-10-12

Your very unlikely to have any problems substituting with tantalum capacitors. Tantalums are generally considered a superior choice compared to standard electrolytics. Cheers, Pat. Pending

Select as Best AnswerUndo Best Answer