At 02:08 PM 12/28/2010, David VanHorn wrote:
>I need about 10mJ energy storage, with a peak voltage of 16V, that can
>withstand some fairly high temperatures.
>The other half of my problem is that I am faced with very fuzzy
>environmental requirements. "Sitting outside in a metal box" is about
>as good as I have at this point.
>Knowing that alone, I know that electrolytics, at least the ones I'm
>familiar with, aren't going to work well.

David:-

In the size range you're talking about, probably electrolytics _are_ the wa=
y
to go unless there are some very special other requirements. As well as
the garden variety 85=B0C and 105=B0C caps, there are electrolytics rated f=
or
-55=B0C to 125=B0C and even -55=B0C to 150=B0C. You'll have to evaluate the=
 life at
elevated temperatures to make sure it's good enough.

Until you get into special packaging for space/military/heavy duty
applications the price premium is often not too extreme within a given
mfr's line. Expect significantly larger physical size.

Eg.
http://www.nichicon-us.com/english/products/alm_mini/list_f.htm

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the rewar=
d"
speff@interlog.com             Info for manufacturers: http://www.trexon.co=
m
Embedded software/hardware/analog  Info for designers:  http://www.speff.co=
m




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