Robert Wuest wrote:
>> ......
>Most applications of Ta caps that I have seen are OK.  Most power supply
>circuits cannot provide the high amp surges required for this to be a
>really significant issue and most Ta caps don't blow up :)
.....
>If the power supply can provide mucho current, you should place some
>sort of inrush current limiting (like an NTC device) in series.  On a
>linear supply, put it before the regulator. Also, you can use a higher
>voltage rated part because they can take more inrush.
>
>Actually performance specs are hard to get, but 1 ohm source impedance
>can blow parts.  So for a 5 Volt supply that provides 5 amps max (and
>say a 6 volt cap), you're on thin ice.  2 ohms is safer.  Or use a 10
>volt cap.
>

Great, Robert, thanks for the straight scoop. This last sounds like
a good rule of thumb. It looks like the big dogs like Wagner and Grif,
with their 5A to 200A supplies, better keep their helmets on, but us
little dogs with stuff running off wall warts can rest easy.

Also, as someone else mentioned, ie PaulB, there are a couple of
different types of tantalums. Can we treat them the same, viz-a-viz
this "low-impedance" blow-up-in-your-face issue?

best regards,
- Dan Michaels
==============