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From: karl AT aspodata DOT se
To: geda-help AT delorie DOT com
Subject: Re: [geda-help] Thank you verry much, next Idea - IPC proof
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Comments: In-reply-to "Smilie (smilie AT posteo DOT de) [via geda-help AT delorie DOT com]" <geda-help AT delorie DOT com>
   message dated "Mon, 29 May 2017 01:07:08 +0200."
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Date: Mon, 29 May 2017 15:01:14 +0200 (CEST)
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smilie AT posteo DOT de:
> In Example:
> I finde a rule fore footprint construction.
> http://www.kemet.com/Lists/TechnicalArticles/Attachments/29/f2100e.pdf
> This Documentation is according to the IPC-SM-782. 
> And KEMET make this IPC-rule easy to understand, i think.
> 
> We can now take this Information and make gEDA more perfect.
> We can add some SMD-Footprints to the standard library  in accordance
> to the IPC.
> I think, this is a important feature to make pcb more seriously.
> 
> I have an Idea, but this is not easy.
> We can innovate a new attribute in xgschem
> "IPC-SMT-782A-Kemet_l=length_mm/mil",
> "IPC-SMT-782A-Kemet_w=with_mm/mil",
> "IPC-SMT-782A-Kemet_h=height_mm/mil",
> "Make-Footprint=1".
>  
> More Easy is the use of a script "IPC-SMT-782A l w h mm/mil" to
> generate fp-files.
> 
> And more Easy is the including of some standard footprints "IPC0603",
> "IPC0805","IPC2220"....
> 
> 
> What you think about.
[ copy of previous messages in the thread ]

1, please start a new thread for a new subject

2, this is geda-help, what do you want help with ?
   This subject is better in geda-user mailing list.

3, there are a few footprint generators available, see
   http://wiki.geda-project.org/pcb:footprint_generators

4, there are other documents about footprints, have a look at:
 http://www.mentor.com/resources/appnotes/upload/level-a-land-pattern-construction.pdf
 http://www.mentor.com/resources/appnotes/upload/through-hole-padstacks.pdf
 http://communities.mentor.com/mgcx/servlet/JiveServlet/download/28883-8838/PCB%20Design%20Optimization%20Starts%20in%20the%20CAD%20Library.pdf

Regards,
/Karl Hammar

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