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July 1999

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Subject:
Re: PCB blistering during wave
From:
Kenneth Kirby <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 9 Jul 1999 10:41:55 -0500
Content-Type:
multipart/mixed
Parts/Attachments:
text/plain (698 bytes) , pic01605.pcx (2490 bytes) 



Is it the board that is blistering or the solder mask?  If it is the board
try baking them.  It could also be of course just a bad batch of boards
that can not be fixed.

Ken Kirby



 (Embedded
 image moved   "Tempea Ioan" <[log in to unmask]>
 to file:      07/09/99 10:18 AM
 pic01605.pcx)




To:   [log in to unmask]
cc:    (bcc: Kenneth Kirby/ElectrovertUS/Cookson)
Subject:  [TN] PCB blistering during wave




Fellow technetters,

we are presently fighting with some ultra low-end TH only PCBs. During
waving they blister a lot. We tried many things like hotter-colder
preheating, hotter-colder solder temp, faster-slower speed. No result.

Are there any other tricks to try, or we send them back to the fab?

Thanks, Ioan

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