Getting to dislike tantalum caps
mcguire at neurotica.com
Sun Feb 14 14:37:02 CST 2010
On Feb 14, 2010, at 1:45 PM, Randy Dawson wrote:
> There was some criminal stuff going on with electrolytes in this
> era, from the asian manufacturers. Almost everybody associated
> with the type of electronics that was not 'throw away' remembers
> this. I had a note from a pro video repair shop, saying that to
> get a $15,000 pro video camera back in operation would require the
> replacement of all the tant caps, as they were all destined to
> fail, and yet another trip to the shop.
> Anybody else recall this? There was one chemical manufacturer
> pinpointed, that was supplying XR7 or whatever electrolyte to all
> the manufacturers. They shortcut their process and cut costs, and
> several years of electronic products were affected.
Not tantalum, and not X7R. X7R is an EIA specification that
pertains to ceramic capacitor temperature stability. The electrolyte
problem was a stolen formula that was incomplete, but was used by
several manufacturers. This happened in 2003; the market is still
flooded with bad (non-tantalum!) electrolytic capacitors.
Port Charlotte, FL
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