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September 2012

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Subject:
From:
John Foster <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Tue, 18 Sep 2012 18:50:08 -0700
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The highest voltage we will see is +5v. So you feel it's an electrical
isolation issue?
Thanks

-----Original Message-----
From: Joyce Koo [mailto:[log in to unmask]] 
Sent: Tuesday, September 18, 2012 6:10 PM
To: [log in to unmask]; Foster, John @ CSG - PHOTONICS
Subject: Re: [TN] question about 6012

What voltage of your application?  Some of hid operated at blow 4v. 1.8
are common.  If you are working on 18v, I would be a bit of worry. 
--------------------------
Sent using BlackBerry


----- Original Message -----
From: John Foster [mailto:[log in to unmask]]
Sent: Tuesday, September 18, 2012 09:03 PM
To: [log in to unmask] <[log in to unmask]>
Subject: [TN] question about 6012

I am curious about the 3.543 uin dielectric spacing recommendation in
6012C 3.6.2.15. I have to believe that this

Number did not just come out of thin air. I have been searching for any
long term reliability issues related to going below this number. I know
that HDI structures and embedded capacitors use very thin dielectrics
and the spec recommends low profile copper when going below this number.
We are doing Class 3 boards  and I am just trying to make sure I am not
shooting myself in the head going below this number. 

Thanks in advance


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