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April 2007

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Subject:
Re: Tacking corners of BGAs
From:
John Burke <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, John Burke <[log in to unmask]>
Date:
Mon, 16 Apr 2007 16:14:34 -0700
Content-Type:
text/plain
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text/plain (74 lines) 
I am almost afraid to ask but am curious:

"what mechanical stress"?

John

 
 
John Burke
 
(408) 515 4992

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of David Tremmel
Sent: Monday, April 16, 2007 2:56 PM
To: [log in to unmask]
Subject: [TN] Tacking corners of BGAs

Dear Technetters,

 

We have a quality issue where some of our boards are returning because the
BGAs need to be protected against mechanical stress.  We were considering
using Loctite´s Chipbonder 348 on the corner of the BGAs in question (we
would not to use an underfill).

 

Does anyone have any experience with Chipbonder 348 in this kind of
application?

 

Would anyone care to suggest a heat-cured adhesive for tacking down corners
of BGAs?

 

 

Thank you in advance,

 

David

[log in to unmask]


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