Its not normal clad material in my shop, but you can order it if you have
too.
Can't believe they sent that to you. Very unpleasant business that.
As far as what's there, you do have foil, but no surface plating on top.
Fell off, knocked off, kept off, doesn't really matter at this point.
Passing test is easy. It only matters if you need specific impedance or
voltage requirements, then you might catch that. You probably do have
enough copper and a continuity test wont require much to pass
3.5.3.2 of the 6012 kills it (as you mentioned--more than a 20% reduction in
thickness) I expect a x-section of the physical geometry is in your favor as
well but you don't need to section itl. Scrape as previously suggested. It
looks like it can be welded althouhg welding at elbows is a pain. Can you
weld the stuffed board or is it too cramped?
I'd kill my inspector, and my production manager if they tried push that
out. That tells you what I think of it. Ask them if they have spares from
the fab lot for replacements. Bet they don't, shipped what they could get to
pass....(or not.)
Steve M.
----- Original Message -----
From: "Gary Camac" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, May 28, 2003 15:03
Subject: Re: [TN] Trace thickness problem...
> Steve,
>
> My man - thanks for sticking with us. After taking on two kinds cancer
over the last few
> years I have determined that life has no quarantines, but if I don't take
it and myself
> too seriously I seem to enjoy it more.
>
> The spec sounds bogus. I am going to assume you are expecting 0.001"
copper in your
> holes. If you start with 0.0005" foil on layer 1 of the laminate, after
hole plate the
> etches would be at least 0.0015". Looking at the stack-up it looks like
PWB vendor has
> to have a laminate with 1 oz. clad to one side (layer 2 side) and 3/8 oz
clad to the other
> side (layer 1side). I guess one of the board guys could say if that is
normal, i.e. in
> stock, material.
>
> Gary Camac
>
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