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March 2000

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multipart/mixed; boundary="------------F867C1B94FB6682063F73205"
Sender:
TechNet <[log in to unmask]>
Subject:
Using HASL finish with BGA's
From:
Dave Simmons <[log in to unmask]>
Date:
Fri, 3 Mar 2000 14:46:15 +1300
MIME-Version:
1.0
Organization:
Tait Electronics Ltd
Reply-To:
"TechNet E-Mail Forum." <[log in to unmask]>, Dave Simmons <[log in to unmask]>
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text/plain (360 bytes) , david.simmons.vcf (329 bytes) 
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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