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From: WangoTango on 9 Jun 2010 17:31
In article <0001HW.C8352BB000501E40B01AD9AF(a)news.eternal-september.org>,
invalid(a)invalid.net says...
> I've been searching the net for a comprehensive list of drawings of IC
> packages, specifically, all things "SO" (ie, SO, SOP, TSOP, SSOP, TVSOP,
> etc.). What does come up are lists of packages, but no drawings.
>
> I need to have dimensions listed as well, similar to what is typically
> provided in datasheets.
>
> Thanks.
>
>
This is pretty good :

http://www.latticesemi.com/lit/docs/package/pkg.pdf

From: Lostgallifreyan on 9 Jun 2010 17:32
James Sweet <jamesrsweet(a)gmail.com> wrote in
news:huovdv$ie3$2(a)news.eternal-september.org:

> I've gone to just
> ignoring all the packages included in the PCB software and drawing my
> own from the datasheet of each part I use, it's less hassle in the long
> run.
>
>

I agree, I do that too. I collect them slowly and reuse them. Considering SMT
is full of 'standards' it's amazing how there are so many, and some so loose,
that there might as well not be any.

When I saw Baron's post I saw pretty much the same thing I was going to say
when I first saw the original post. I hadn't replied, because I'd hoped that
the standards were adequately adhered to, and that someone who knows far more
than I do might point out a definitive source, but most replies here seem to
suggest that only going to the source of the part to be used is going to get
viable data for it. Maybe not even then.

Sometimes I get the bright light, the maginfier, the digital vernier scale,
and measure the damn things myself! That way I KNOW it fits.
From: DaveC on 9 Jun 2010 18:22
> http://www.latticesemi.com/lit/docs/package/pkg.pdf

Thanks for that.

Just my luck: Lattice have updated that document by deleting all SOIC
packages, the ones I apparently need...

A good reference otherwise, tho.

Thanks again.

From: Martin Riddle on 9 Jun 2010 18:30


"DaveC" <invalid(a)invalid.net> wrote in message
news:0001HW.C8352BB000501E40B01AD9AF(a)news.eternal-september.org...
> I've been searching the net for a comprehensive list of drawings of IC
> packages, specifically, all things "SO" (ie, SO, SOP, TSOP, SSOP,
> TVSOP,
> etc.). What does come up are lists of packages, but no drawings.
>
> I need to have dimensions listed as well, similar to what is typically
> provided in datasheets.
>
> Thanks.
>

Board houses usually adhere to the IPC standards, unless its oddball
stuff.

<http://landpatterns.ipc.org/default.asp>

Cheers


From: Rich Webb on 9 Jun 2010 19:39
On Wed, 9 Jun 2010 11:29:52 -0700, DaveC <invalid(a)invalid.net> wrote:

>I've been searching the net for a comprehensive list of drawings of IC
>packages, specifically, all things "SO" (ie, SO, SOP, TSOP, SSOP, TVSOP,
>etc.). What does come up are lists of packages, but no drawings.

You need the JEDEC standards. Bless their hearts, the standards are free
upon registration.

For example, the "Plastic Shrink Small Outline Package (SSOP) Family.
R-PDSO/SSOP/SOIC" is covered by MO-137E, Mar 2010 over at
http://www.jedec.org/standards-documents/docs/mo-137e

Get thee hence to http://www.jedec.org/

--
Rich Webb Norfolk, VA
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