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March 2001

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Subject:
From:
Guy Ramsey <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 12 Mar 2001 13:17:10 -0500
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Plain old FR4? Got a reflow profile? Cooling zone to high? Things that make
you go Hummmm.

 Guy Ramsey
American Competitiveness Institute
Senior Lab Technician / Instructor
610 362-1200 ext 107


-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Nicolas Ortiz
Sent: Monday, March 12, 2001 12:11 PM
To: [log in to unmask]
Subject: [TN] Cracked Capacitor 1812


I have a question for all you technetters. We are experiencing cracking on
certain 1812 ceramic capacitor. The cap cracks on the joint between the
ceramic and the end termination. We already checked our process, following
the vendor's recommendation, and still have between 1-2% cracked just after
the second pass oven. The component is placed in the first pass of a double
sided reflow (no wave solder). Does anybody experienced a situation like
this?

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