> When is it OK to use aluminum caps instead of the outrageously expensive
> tantalum?
>
> Jay

When you do not care about high leakage, temperature dependence of the
cap. value, and rapid failure at high temperature (<1000 hours), as well
as the danger of leaking electrolyte (after 2-5years) and the effects of
them drying out and losing capacity (and increasing ESR) after 3-5 years.

In general in a consumer product you use Ta caps only for parts that need
to be highly stable and low leakage, low esr. All the others are Al caps.

In a higher end product you will probably be choosy about the make and
type of each part, not only caps.

Peter

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