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October 2006

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Subject:
Recommended SMD to SMD clearances?
From:
Thad Schultz <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Thad Schultz <[log in to unmask]>
Date:
Tue, 31 Oct 2006 10:20:45 -0700
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All,



What IPC spec discusses recommended SMD to SMD clearances?  We are trying to update our internal documents to coincide with the latest industry standards.  What I am after is the recommended SMD to SMD clearances when laying out a PCB.  What should discrete chip to discrete chip spacings be?  SOIC to SOIC?  Discrete to SOIC?  PLCC to PLCC?  Basically all combinations of one part type to another including the different possible rotations.  I have an old diagram from IPC-SM-782 but I think it is outdated and replaced by another IPC spec.  Any help would be appreciated.



Thanks.



Thad Schultz

EDA Librarian / Sys Admin

Woodward Industrial Controls 

[log in to unmask]

ph (970)498-3570

fax (970)498-3077

www.woodward.com













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