Charles,
Amen!!!!!
Franklin
-----Original Message-----
From: Charles Barker <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Date: Thursday, July 29, 1999 10:23 AM
Subject: Re: [TN] Dewetting Issues
>The following suggestions/ideas will probably not help this particular
>incident, but may help avoid repeats in the future.
>
>What kind of PWB performance specification are these boards being bought
>to? Do the boards meet that spec?
>Do you have an in-house generated PWB Performance Spec?
>Unless these things are thought out and brought out in writing up front, it
>is usually very difficult to win some
>of these arguments. A well thought out performance spec will preclude most
>(not all) problems from ever coming
>to the point where they need to be argued about.
>
>
>
>
>
> To: [log in to unmask]
>
> cc: (bcc: Charles Barker/US/I-O INC)
>
>
>
> Subject: Re: [TN] Dewetting Issues
>
>
>
>
>
>
>
>
>
>I think Paul is correct, communication is the key. Try to get purchasing
>to
>
>Understand the ramifications. By being on technet, I as a buyer, am trying
>To understand the technical side of PCB's. I get very frustrated when QC
>Rejects something and then will not explain to me the reasons. I think
>that
>If my QC could come to me and explain their reasons, I would be more
>willing
>To go to the supplier and fight harder to get the issue corrected. When my
>Supplier comes back to me and says "show me where it is out of spec" and
>I have no answer for them, I feel stupid, when all I can say is "visual
>inspection".
>No board house wants to get back "rejects", as these are custom products,
>They have no other customer they could sell them to, if they can't fix
>them,
>They go in the trash. I am working for the best for my company, but I also
>Understand that if we keep rejecting material our costs will have to go up
>Because the board house will want to re-coup part of the profits lost when
>We return product. We try to work with our suppliers to do what is best
>for
>Both of us. I understand that not every issue is "cut & dried", but with
>better
>Communication, maybe we can take care of some of them.
>
>Jackie Jebens
>Purchasing Manager
>GoldenRAM
>
>
> -----Original Message-----
> From: Paul Klasek [SMTP:[log in to unmask]]
> Sent: Wednesday, July 28, 1999 5:03 PM
> To: [log in to unmask]
> Subject: Re: [TN] Dewetting Issues
>
> Good to hear you Kathy ; be it sad issues .
> Pity Steve's not yet fully on line ; he'd tell you better than me :
>
> Been there ; done that .
>
> Trouble is Kathy ; yo're both right :
>
> Your tech sense on clear test result gives clear verdict : fail
>
> Purchasing knows if they knock back the boards/order/etc.
> they will quite likely not see the customer again = their view :
>fail
>
> When sandwiched in past: I enclosed all tests (wetability,
>vibrational if
> requested, etc.) .
>
> Just cover yours by proper documentation :
> Did the test ; informed client of ramifications ; ask him if they
>want it
> followed by vibration or shock test (no time for cycling) they
>would
>pay for
> obviously ; inform them on warranty ramifications of all of this
>mess ,
> and than sleep in peace .
> Communicate ; I know sensistivity lessons sound strange from me ;
> but believe me, when required, we should all be gentle, on
>ourselves
>as well
> :
>
> Where I came from the saying goes :
> Loosing health for "limitations" of others does make you the same .
>
>
> Cheers paul
>
> PS
> Aspirin ?
>
> -----Original Message-----
> From: Kathy Palumbo [mailto:[log in to unmask]]
> Sent: Thursday, 29 July 1999 5:45
> To: [log in to unmask]
> Subject: Re: [TN] Dewetting Issues
>
>
> FYI
>
> They (purchasing) did not believe the solderability testing so they
>had us
> build up boards anyway. When the boards passed test they said
>there
>was no
> problem with the boards.
>
> We all know this is not accurrate, because if you put enough solder
>down you
> can mask off just about any dewetting problem out there.
>
> Believe me I have already pondered the worse case senerio!
>
> Regards,
> Kathy Palumbo
>
> -----Original Message-----
> From: Franklin [mailto:[log in to unmask]]
> Sent: Wednesday, July 28, 1999 12:20 PM
> To: [log in to unmask]
> Subject: Re: [TN] Dewetting Issues
>
>
> Kathy,
>
> Why would you be concerned with 'long term solderability' issues
>when you
> have this initial solderability condition to deal with? Seems to me
>the
> argument should be the 'here and now', and not the 'what if'.
>
> All I know about reliability studies are those I have first hand
>experience
> with, and that being as I wrote above, if they fail from the
>beginning, they
> will not get any better sitting on a shelf.
>
> <smile> Something to ponder.
>
> Franklin D Asbell, CQA
> Network Circuits, Inc.
> Irving, Texas
>
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