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September 2007

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TechNet E-Mail Forum <[log in to unmask]>, Hfjord <[log in to unmask]>
Date:
Thu, 20 Sep 2007 22:46:57 +0200
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Cold solder joints sounds as one of many explanations.
/Inge

-----Ursprungligt meddelande-----
Från: TechNet [mailto:[log in to unmask]] För Steve Smith
Skickat: den 20 september 2007 22:26
Till: [log in to unmask]
Ämne: [TN] Problem with a crystal solder joints

We recently came across a problem where thru-hole crystals (vertically
mounted HC49U cases) on some boards acted as if they where not soldered
properly.  We could physically push some of them to the left or right
and they seemed to make a connection.  If we removed the crystals and
resoldered them they worked just fine.  I was obviously thinking we had
some bad solder joints but they looked fine on initial inspection.  We
tried to reflow the solder joints without removing the parts with no
luck, they would not work unless we removed the part first and
resoldered.  Any ideas on what we are seeing here?

My regards, 
Steve Smith, C.I.D. 
Product Engineer
Staco Energy Products Co. 
301 Gaddis Boulevard. 
Dayton, OH 45403 
Web Site: www.stacoenergy.com 
& www.stacopower.com
 
DISCLAIMER AND/OR CONFIDENTIALITY NOTICE: 
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contain information that is privileged, confidential, and exempt from
disclosure under applicable law. If the reader of this electronic mail
transmission is not the intended recipient, you are hereby notified that
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please e-mail or call Staco Energy Products Co. at (937) 253-1191. Thank
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