Doug - Thanks for the overview.

Sorry about the shoulder - take 2 'Dews and you'll forget all about it, or at least compensate by typing twice as fast with a single hand.......



________________________________
From: [log in to unmask] [mailto:[log in to unmask]]
Sent: Monday, February 01, 2010 10:00 AM
To: TechNet E-Mail Forum; Glidden, Kevin
Subject: Re: [TN] IPC-5702 / IPC-5704


Having written most of both, let me give it a shot.

5704 gives you recommended cleanliness requirements for bare/unpopulated printed circuit boards as measured by ion chromatography.  It essentially duplicates Delphi's C-7000 cleanliness specification that has worked well for over a decade.  It does not claim that if your boards meet these levels that they will be good for all processes, all applications, all end environments, for ever and ever, Amen.  But, it is a darn good place to start until your own testing tells you better.  Certainly a vast improvement over ROSE.

5702 was written to give guidance to OEMs guidance on determining how clean boards and assemblies need to be for their applications.  Meant more for general education.

Both brilliantly written.  Must now type one handed as I have dislocated my shoulder patting myself on the back.  In reality, both documents were significantly improved through the inputs of the 5-32c and 5-32a IPC working groups.

Doug Pauls
Rockwell Collins
Delusional Engineer


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02/01/2010 08:51 AM
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[TN] IPC-5702 / IPC-5704










Happy Monday everyone.....

Can anyone comment on how the newly released IPC-5704 ""Cleanliness Requirements for Unpopulated Printed Boards" and the 2007 release of IPC-5702 "Guidelines for OEMs in Determining Acceptable Levels of Cleanliness of Unpopulated Printed Boards" are meant to work together?  I've not yet read the new 5704, so this is just a general inquiry......

Thanks!
Kevin

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