Polarity of Tantalum Caps

[tenwatt]

So I have this Tantalum cap that I'm putting on my Egodriver board.  How do I tell which side is positive?  My common sense guess is the right side, in the picture below, because it has the positive sign in the small lettering above that lead.  But that's my uneducated guess.

[gtr2]

Usually the positive lead is slightly longer as well, but that doesn't look like the case based on your picture. Unless you already trimmed the leads.

Josh

[tenwatt]

Usually the positive lead is slightly longer as well, but that doesn't look like the case based on your picture. Unless you already trimmed the leads.

Josh

Nope, I didn't trim them yet.  I actually knew that believe it or not.

So am I correct in my assumtion of the print on the cap.  It doesn't look like it is really labeling the lead as much as it's just describing the cap.

[gtr2]

I'd go for it!

Josh

[oldhousescott]

The bar or stripe indicates the positive lead on a tantalum cap. Exactly the opposite of an electrolytic.

[tenwatt]

The third page here gave me my answer.  It's not so clear looking at the cap but the drawing here really helped.

http://www.kemet.com/kemet/web/homepage/kechome.nsf/vapubfiles/F3100_TaDipRad.pdf/$file/F3100_TaDipRad.pdf

[bigmufffuzzwizz]

The bar or stripe indicates the positive lead on a tantalum cap. Exactly the opposite of an electrolytic.

Took me awhile to spot this the first time. Some of them also have a nice miniature plus sign.