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Reply To: | TechNet E-Mail Forum. |
Date: | Thu, 3 Jun 1999 08:45:38 -0400 |
Content-Type: | text/plain |
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We are currently experiencing a run of tantalum polarized capacitor
failures. The caps are becoming resistive when voltage is aplied,
drawing current, and cooking up. Sometimes this is immediate,
sometimes over time.
This issue primarily is affecting 12VDC power busses, and involves
several different value and manufacturer caps. Common threads: 12V
circuits (the supplies themselves have been ruled out), polarized SMT
tantalum capacitors, 35V rated.
We have had the manufacturers involved and have exhaustively looked
into the issue. I know that there is a myriad amount of possible
contributors to this problem.
My question is simple: Have any of you experienced this before with
tantalum capacitors, and if so, what have you found?
Thanks in advance!
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Robert D. Green - Supervisor, Test Engineering
Hadco - Value Added Manufacturing
e-mail [log in to unmask]
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