[R-390] Re: Tantulum Capacitors

[Jim Shorney]

On Wed, 24 Sep 2008 07:34:32 -0500, glwebb at gundluth.org wrote:

>     My somewhat faulty memory says that  the big advantage of tantulums is
>that they have lower leakage
>compared to a similar value common electrolytic capacitor.

Lower leakage and lower ESR. However, they are extremely vulnerable to
death by surge. I've seen recommendations that you should derate the
voltage rating to 1/3 in power filtering apps. So 50v for a 12 (or 9)
volt supply is reasonable. I avoid using them for such applications. A
good quality electrolytic rated for 105 degrees C tempertatures is
prefereable IMO.

73

-Jim
NU0C