Hello Mitch,
Reread my e-mail... I said 'package', not 'footprint'.
Chris said... "Same question with package types....", and that was what I was
answering.
Regards,
James Jackson
Oztronics
> Hi James,
>
> I've never got a "footprint" pattern from JEDEC, have you? I've gone to
> the JEDEC site to see package dimensions, but I never understood them to
> have land patterns or footprints for the packages. I've never known them
> to be invloved with the manufacturing side of the packages, only the
> packages themselves. Am I wrong? If I am, would someone please tell me
> where they hide the footprints?
>
> I think it's great that an organization is finally trying to convince
> the manufacturers to "use" a standard package, and I'm still hoping IPC
> can convince all us designers to use their land pattern standards. We'll
> see. ;)
>
> TIA.
>
> Mitch
>
> ---------Included Message----------
> > Date: Wed, 15 Aug 2001 21:39:39 -0500
> > From: "James Jackson" <[log in to unmask]>
> > Reply-To: ""(Designers Council Forum)""
> <[log in to unmask]>, "James Jackson" <[log in to unmask]>
> > To: <[log in to unmask]>
> > Subject: Re: [DC] SM footprints and standards
> >
> > Chris,
> >
> > I believe that JEDEC is the controlling organization for the
> package styles here in the U.S.
> >
> > You will see several references in the IPC-SM-782 to this.
> >
> > I think that the way it works, is that a company creates a new
> package style, and submits it to the JEDEC committee, where it is voted
> on and when approved becomes an 'official' pattern.
> >
> > The Japanese have their equivalent to the JEDEC (the EIAJ) - and
> this causes some pattern differences, at times - but the companies are
> now realizing the benefits of 'playing together' when creating new
> patterns.
> >
> > Regards,
> >
> > James Jackson
> > Oztronics
> >
> >
> > I have several links to surface mount standards, but what I
> would like to know
> > is who actually makes the standards for these footprints?
> > Is it IC makers and they are adopted such organizations as
> IPC?
> > Are the IPC standards THE standard or are they a collection of
> > others?
> >
> > I understand there are some European standards as well. Who
> > controls these? (These may be a Gary questions)
> >
> > I've found standards or actually descriptions at several
> different sites and
> > want to ensure all are correct.
> >
> > Same question with package types....
> >
> >
> > CR
> >
> ---------End of Included Message----------
> _____________________________________________________________
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>
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