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March 2000

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Subject:
Using HASL finish with BGA's
From:
Dave Simmons <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 3 Mar 2000 14:46:15 +1300
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Hi everyone,

We are currently trialing placement of some BGA's. The BGA's we are
placing are
0.8mm pitch. We have placed some on HASL boards with good results. There

seems to be a lot of talk regarding co-planarity problems using HASL. I
was
wondering if anyone uses HASL with BGA's and if so, do they get any
defects
related to the surface finish.

Thanks in advance

David

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