Steve,

The reason the fabs can't cover the cost of your parts and labor is
because everyone wants multilayer boards at pennies per square inch.  No
possibility of covering warrantee costs as you add 10x the board cost when
you blister the boards assembling them.  If one bad job eats the profit
from 100 the fabs will be out of business in a week.  Maybe the designers
should spec materials that can handle the heat instead of FR-4 with the
cheapest oxide.

just my opinion.

Chuck Brummer
3M Manufacturing Engineer
8357 Canoga Ave.
Canoga Park, CA 91304-2605
(818) 734-4930




stephen gregory <[log in to unmask]>
Sent by: TechNet <[log in to unmask]>
11/29/2006 09:11 AM
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Re: [TN] FW: Delamination pics (IS410)






Good Morning to you Gloria!

  I've got your Word doc. file with the pictures posted at:

  http://www.stevezeva.homestead.com/files/dELAM.doc

  Looking at the pictures, I'm assuming that each page shows images from a
different area. It's worth noting that the delamination appears to be at
the same layer, or am I wrong about that?

  What is your fab vendor saying about this problem?

  What I'm about to say isn't trying to slam all board houses, but in all
the years that I've been working in this business, I've found that almost
never will a board house fairly compensate a company after they've found a
problem with a fab after it's been built. Most of the time they've said
they will give us new boards, but won't compensate us for the labor and
materials in the assembly, and I think that sucks.

  Looking at all the pictures you've sent us, I definitely think it's a
fab problem, not any of your assembly processes, and I would be leery of
shipping any product that is using these fabs.

  But that's just my opinion...

  -Steve Gregory-

Gloria Brown <[log in to unmask]> wrote:
                Good Morning Steve,

  We had a micro section completed on the delaminating area of the boards
here that we are finding that same issue with.  Thought I would share them
as well.  I know that I cannot send them to the forum so if you can post
them like you did the others and share them also please do.

  Thanks

    Gloria Brown
  phone 906-932-5970  ext. 26
  fax  906-932-9822
  [log in to unmask]






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