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January 2011

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Subject:
From:
"Tontis, Theodore" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Tontis, Theodore
Date:
Tue, 11 Jan 2011 13:42:02 -0500
Content-Type:
text/plain
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text/plain (41 lines)
Simply request data supporting the reasoning behind the requirement.
Before doing so, collect your own data supporting your reason for
breaking the rule. I find it strange that the engineer is willing to put
it out there that you have to follow this rule that he cannot confirm
the reason for and this is done just because we have been doing it this
way for xyz years. Maybe you have been doing it wrong for the last xyz
years? 
At some point there will be a design that will require breaking that
rule and a compromise will need to be made. It is best to find a way to
work this through or find out why this is a blanket rule, then to wait
until the time comes you don't have a choice but stand your ground.

Ted T.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Cote, Clint (GE
Intelligent Platforms, US)
Sent: Tuesday, January 11, 2011 12:21 PM
To: [log in to unmask]
Subject: Re: [TN] Trace Widths Entering SMT

Yes, standard FR4 multi-layer with soldermask. I asked the Engineer and
he isn't sure because the requirement pre-dates him.  But, he is adamant
that the requirement must be met.


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