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June 2006

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Subject:
From:
Phil Nutting <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Phil Nutting <[log in to unmask]>
Date:
Mon, 5 Jun 2006 11:39:46 -0400
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text/plain (58 lines)
Ioan,

I've had that problem on a large 16" x 17" circuit board using 1825
ceramic capacitors.  The only successful detection method was visual
inspection followed by a capacitance test.  This test assumes that there
isn't something in the circuit preventing the measurement as we did with
two diodes and a capacitor.

Phil

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Tempea, Ioan
Sent: Monday, June 05, 2006 10:11 AM
To: [log in to unmask]
Subject: [TN] Finding cracked capacitors

Hi Technos,

a never ending story, ceramic caps that crack, possibly due to
depanelizing. The damage is not visible, unless the cap is cross
sectioned.

Is there any testing, thermal cycling or something like that, that could
show the damage real fast?

Thanks,

Ioan



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