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" <[email protected]> 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 <[email protected]> > 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 > > > > > > _______________________________________________ > > time-nuts mailing list -- [email protected] > > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
