Yes, that is the other one.

You can see a chart comparing them HERE:
http://www.frontdoor.biz/HowToPCB/HowToPCB-images/component-orientation.png
(I got that from Tom Hausherr)

The big question in my mind is:
"Why didn't IPC follow BOTH documents, at least where they MATCH???
(maybe I should CC: him on that question...)

surfin' the learnin' curve,
Jack


.
On Fri, Aug 5, 2011 at 11:42 AM, Rainer Taube
<[log in to unmask]>wrote:

> Hello,
>
> the document is:
>
> IEC 61188-7, Ed.1: Electronic Component Zero Orientation for CAD Library
> Construction
>
> as the US (Level A) and the European/Japanese People (Level B) had
> different opinions
> about zero orientation it has two options for zero orientation:
>
> Level A Basic Rules
> For level A type component descriptions for multiple leaded parts pin one
> shall be
> left oriented per the basic rules however, pin one shall be located at the
> upper or
> upper-left position.
> Level B Basic Rules
> For level B type component descriptions for multiple leaded parts pin one
> shall be
> left oriented per the basic rules however, pin one shall be located at the
> left or
> lower-left position.
>
> Hope this helps
>
> Best Regards
>
> Rainer Taube
> Master IPC Trainer (IPC-A-610)
>
> TAUBE ELECTRONIC GmbH
> Nostitzstraße 30
> 10965 Berlin
> Tel.: ++49 (0)30 69592511
> Fax: ++49 (0)30 6942338
> e-mail: [log in to unmask]
> http://www.taube-electronic.de
>
> Geschäftsführer/CEO: Rainer Taube
> Amtsgericht/Trade Register: Berlin HRB 95715 B
> USt.-ID/VAT: DE 814229848
>
> Am 5 Aug 2011 um 10:39 hat S. Roy geschrieben:
>
> > Good morning,
> >
> > I recall there being a document about building PCB footprints with
> > zero orientation, pin 1 being down in the lower-left corner, etc.  Can
> > anyone supply me with the name of that document?  And who put it out
> > there?  Is anybody still using this standard?  Thanks...
> >
> > Respectfully,
> >
> > Steven D. Roy
> > PCB Designer, CID
> > Audio Authority Corporation
> > 2048 Mercer Road
> > Lexington, KY  40511
> > (859) 233-4599
> > [log in to unmask]
> >
> >
> -=-=-=-
>
> I'm pretty sure the document you are thinking of is *EIA-481D.*
> but I don't believe it is keeping up with all the new package styles coming
> out now.
> My advice would be to follow whatever Tom Hausherr is doing with the
> software he maintains
> (and if you don't have the IPC-7351 land pattern calculator/viewer
> software, get it!)
>
> here's a link that will lead to more info, check it out:
> http://blogs.mentor.com/tom-hausherr/blog/tag/iec-standards/
>
> Most older companies have libraries with rotations that aren't consistent,
> but my hope is that eventually we will reach a consensus (at least with
> newer libraries)
> that everyone can depend on.
>
> onward thru the fog,
> Jack
>
> .
>

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