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June 2000

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Subject:
From:
"Edward J. Valentine" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Thu, 8 Jun 2000 12:01:55 -0400
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Hey Steve - Ditto. Maybe a group of us could contribute to a book on some of
the silliness we run into in the name of Engineering and profitability. You
couldn't dream some of this stuff up. It would make a good "Electronics
Manufacturing Comedy Book".

Along with everyone else, I am really curious why "they" want to do the gold
on the populated board. I'm staying tuned in for the answer.

Ed Valentine
Electronics Manufacturing Solutions
8612 Mourning Dove Road, Raleigh, NC 27615
Phone: (919) 270-5145, Fax: (919) 847-9971
Email: [log in to unmask]
Website: http://www.ems-consulting.com

----- Original Message -----
From: Stephen R. Gregory <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, June 07, 2000 10:22 PM
Subject: Re: [TN] Loaded board rework


> In a message dated 06/07/2000 8:49:33 PM Central Daylight Time,
> [log in to unmask] writes:
>
> > The items that they want to be gold are actual features on the board,
not
> > edge connectors or anything like that.
> >
> >  I don't know why they want gold rather than solder.
>
> Hi once again Ralph!
>
> Well, if it doesn't have anything to do with finger contacts or the like,
I
> have to say that your customer doesn't have a clue (I know that you can't
> tell them that) but it's true.
>
> Whether the board is finished with immersion gold or hasl makes not one
bit
> of difference if it's already assembled and working...not one bit of
> difference.
>
> I would ask them why it's such a big point with them, ask them to state
why
> they want this...and I know this can test your patience.
>
> From experience, I've dealt with buyers that have no engineering
experience
> at all, that have over-looked, or not incorporated certain requirements in
> the documentation or data provided to you when they ask you to build
> something for them. THEN expect you to be able to correct for their
> "mistakes"...
>
> A recent example for me was that a fab needed to have the current rev
level
> of a fab etched into the surface layer of a the fab. Problem was that the
> gerbers that were provided to fab house didn't have the current rev level
> letter incorporated into the gerbers. So the fabs came to us with the
wrong
> rev letter designation etched on the surface layer. The rev changes were
> indeed incorporated (it was an inner layer trace or something) but the
outer
> layer letter for the current rev hadn't been changed.
>
> I told our customer that we could use a dremel tool to remove the etched
rev
> letter and place a label for the rev, but that wasn't acceptable. The fabs
> had to be remade (at their cost of course, because it hadn't been in the
> gerber in the first place) but they still tried to kick our butts because
we
> didn't make the planned delivery schedule...fun stuff huh? There wasn't a
> thing that was functionally wrong with the fabs other than a letter that
was
> etched into the fabs on the surface layer. But that's what you get when
you
> deal with buyers that have no common sense...
>
> Just venting I guess...
>
> -Steve Gregory-
>
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