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July 2007

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Subject:
From:
Paul Ziarek <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Paul Ziarek <[log in to unmask]>
Date:
Wed, 18 Jul 2007 16:13:23 -0500
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We are investigating using SAC 305 HASL finish on through hole and SMT 
boards.  Deisgns include BGAs (50 mil pitch, 24 mil dia pad), 0402's, and gull 
wing parts with 0.016" x 0.070" pads on 15 mil pitch.  Is anyone aware of an 
industry standard for HASL thickness?  I've seen specifications for the HASL 
thickess ranging from 0.0005" -0.003".   Any other comments are welcome.

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