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Subject:	Re: Mixing least, Nominal, and Most footprints.
From:	Paul Brionez <[log in to unmask]>
Reply To:	(Designers Council Forum)
Date:	Thu, 15 Nov 2007 10:41:37 -0500
Content-Type:	text/plain
Parts/Attachments:	text/plain (41 lines)

Adam 
The design critera for L,N,M was outlined in the IPC7351 specification. It coincides with the IPC ratings for design complexity from Class A,B & C. I would not introduce a variety of footprints since the MFG group may have to handle the soldering of each footprint based on the size,shape etc., 
My .02

Paul Brionez - CID +
PB Design & Drafting Inc.
3341 Tumbling River Dr
Clermont, FL 34711
352-404-9352

----- Original Message -----
From: "Adam Smith" <[log in to unmask]>
To: [log in to unmask]
Sent: Thursday, November 15, 2007 9:12:14 AM (GMT-0600) America/Chicago
Subject: [DC] Mixing least, Nominal, and Most footprints.

Hi,

What is the general consensus on mixing least, nominal, and most footprints on a single PCB? I am of the mindset that you should chose one and go with it. Others at my company think that we should only use least where necessary and if space allows use the larger footprints. Thoughts?

Thanks,
Adam

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