[sdiy] Failure modes on bypass caps...

[Seb Francis]

I would say that using 100x 100nF ceramics with no tantalum or 
electrolytic would run the risk of making the power supply resonate and 
ring.

But I'm only going by what I've read - I've never experienced such 
problems (but then again I've always included at least 1 tantalum or 
electrolytic per power rail!)

Seb


James Patchell wrote:

> I look at it like this....if you have 106   0.1uF caps on the 
> board...that is 10uF....adding a 10uF Tant is not going to make much 
> of a difference.  My rule of thumb is avoid Tantalums, and minimize 
> their use.....and toss in as many ceramics as you like...
>
> At 03:02 PM 12/6/2005 -0500, Aaron Lanterman wrote:
>
>>> But in general, ceramics "do not fail", so there isn't a whole lot 
>>> to worry about with them.
>>
>>
>> So it sounds like the take home message is to always use ceramics for 
>> your bypassing pleasure?
>>
>> - Aaron
>>
>> ----------------------------------------------------------------------------- 
>>
>>
>> Dr. Aaron Lanterman, Asst. Prof.       Voice:  404-385-2548
>> School of Electrical and Comp. Eng.    Fax:    404-894-8363
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>
>         -Jim
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> http://www.oldcrows.net/~patchell
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