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November 2005

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Subject:	Re: IPC2221, IPC2222
From:	"Brand, Rodney" <[log in to unmask]>
Reply To:	(Designers Council Forum)
Date:	Wed, 9 Nov 2005 11:37:10 -0500
Content-Type:	text/plain
Parts/Attachments:	text/plain (52 lines)

I use standards from our subcontractors. They know what they can do that
does not have a big effect on yield, I lean towards pushing the limits
because today's tighter limits are going to be tomorrows standard
limits. I know that there are absolute limits but we are not there yet.
Remember when 8&8 was common for volume and know 4&4 is common. Most of
the subcontractors have developed their standards by starting with the
IPC's then improving the limits to be competitive.

-----Original Message-----
From: DesignerCouncil [mailto:[log in to unmask]] On Behalf Of
Mariani, Stephen
Sent: Wednesday, November 09, 2005 10:57 AM
To: [log in to unmask]
Subject: [DC] IPC2221, IPC2222

All,
 
I would like to get an idea on how may of you design PCB's using IPC
manuals or a company design standards driven from mfg or both? Does
anyone only use IPC standards to create designs?
 
Thanks
Steve
 

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