Chris

If your customer says they NEED this information, don't you suppose they
have good reason? Keep-in-mind that the customer is always right.

Your comment that IC and SIR are the only "practical" tests will be proven
by running these tests - and when you do, and they (may/may-not) fail what
then?

SIR will inform you if the product might be reliable - it will NOT inform
you what might be the cause of any failure.

IC will inform you what is on the assembly, but it will not inform you if
the end product will be reliable.

Now then, is your product high rel? Will people die if it fails? Will your
company go out of business if it fails?

I would recommend that you do the tests as required - and the SIR will be
the first indicator - IMHO!

Hope this helps
-- 
Regards Graham Naisbitt

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child does not grasp the pleasure principle of miniature golf? Just how
child-like golfers become, is proven by their frequent inability to count
past 5.

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On 23/2/05 7:27 pm, "Chris Schaefer" <[log in to unmask]> wrote:

> Hello everyone!~~~~
> 
> I have a few questions concerning the "Qualification" of a new flux type
> for a wave soldering process. To start out with let me state that I am
> dealing with products that are Class 3 with exceptions to the standard (IPC-
> 610-C) with poor designs, which will not change any time soon. We are
> currently using a 2% NC flux applied by spray and are changing to an RMA
> 18% applied via foam. The testing has shown a highly significant reduction
> in the # of defects, but our customer requires certain things prior to
> acceptance. So the questions are which of the following tests are truly
> needed and which tests are not (and thes ones that are not needed, why?):
> 
> · SIR Testing (per IPC-TM-650) using B-36 test platform
> · ECM (Electrochemical Migration) Testing
> · Ion Chromatography testing each of the supplied boards
> · Surface Organic Contamination
> · Conformal coating adhesion
> · Component compatibility
> · Residue analysis as required
> 
> Now we believe that SIR and IC testing are the only ones that are truley
> needed in this arena and from a practical standpoint the only necessary
> ones. Now we clean these boards with a material that has proven it self
> over time with a excellent inline cleaner, and have 100% confidence that
> the test results from the SIR and IC will come back with stars on them.
> 
> I could really use some help here... I'm not an expert in this realm of
> Engineering and would appreciate some input as ammo that could be used to
> sway them to our way of thinking.
> 
> Thank You.
> 
> CAS
> 
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