[time-nuts] PRS10 C900 replacement

Clint Jay cjaysharp at gmail.com
Wed Jan 20 14:27:29 UTC 2016


Do tantalum then benefit from being 'reformed'  in a similar fashion to wet
electrolytics?

Do they recover from moisture ingress by baking in a similar fashion to SMD
chips that have been stored incorrectly?
On 20 Jan 2016 14:10, "Bob Camp" <kb8tq at n1k.org> wrote:

> Hi
>
>
> The only thing I would add to that is:
>
> Get it from Mouser or Digi-Key. That way you have a pretty good chance of
> it being one
> that really came from the manufacturer you think it’s coming from. You
> also are a lot
> less likely to get one that has been on the shelf forever and ever.
>
> One really strange thing about Tantalum’s: They *like* bias and
> temperature. The
> time you are most likely to see high leakage is when they have been power
> off for
> a long time. That’s another reason to want a new one …
>
> Bob
>
> > On Jan 20, 2016, at 1:59 AM, Charles Steinmetz <csteinmetz at yandex.com>
> wrote:
> >
> > david wrote:
> >
> >> It's a 2.2uF cap, with a 0.125" lead spacing, and I'm looking for 125dC
> temp rating. I wondered if there were other characteristics such as ESR/ESL
> I need to keep in mind.
> >
> > You're on the right track.  Get the highest temperature rating available
> (which is probably 125C), buy only caps manufactured by one of the
> known-good manufacturers, and select from a parts series the manufacturer
> designates as "high reliability" (or equivalent).
> >
> > If it is a solid tantalum, I like the Vishay 199D Series.  The AVX TAP
> Series and the Kemet "T" Series ("UltraDip II") are also high quality.
> (This list isn't exhaustive -- these are just the ones I've had occasion to
> qualify.)
> >
> > Best regards,
> >
> > Charles
> >
> >
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