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Where can I find SMD pad layout info?

Where can I find SMD pad layout info?

2004-01-24 by jocjo_john

Does anybody know where I can get information for the various 
dimensions of the pads for SSOP devices? I want to create the 
components in my CAD program but I don't know the recommended pad 
sizes. The one I'm working on now is a 20-pin SSOP.

Thanks.

John

Re: [Homebrew_PCBs] Where can I find SMD pad layout info?

2004-01-24 by Leon Heller

----- Original Message -----
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From: "jocjo_john" <jocjo_john@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Saturday, January 24, 2004 10:12 PM
Subject: [Homebrew_PCBs] Where can I find SMD pad layout info?


> Does anybody know where I can get information for the various
> dimensions of the pads for SSOP devices? I want to create the
> components in my CAD program but I don't know the recommended pad
> sizes. The one I'm working on now is a 20-pin SSOP.

Philips has a useful document on their web site with most SMD footprints in
it. They will probably need some adjustment for home-made PCBs and hand
soldering.

Leon
--
Leon Heller, G1HSM
Email: aqzf13@...
My low-cost Philips LPC210x ARM development system:
http://www.geocities.com/leon_heller/lpc2104.html

Re: [Homebrew_PCBs] Re: Where can I find SMD pad layout info?

2004-01-25 by Leon Heller

----- Original Message -----
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From: "jocjo_john" <jocjo_john@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Sunday, January 25, 2004 12:57 AM
Subject: [Homebrew_PCBs] Re: Where can I find SMD pad layout info?


> --- In Homebrew_PCBs@yahoogroups.com, "Leon Heller"
> <leon_heller@h...> wrote:
> >
> > ----- Original Message ----- 
> > From: "jocjo_john" <jocjo_john@y...>
> > To: <Homebrew_PCBs@yahoogroups.com>
> > Sent: Saturday, January 24, 2004 10:12 PM
> > Subject: [Homebrew_PCBs] Where can I find SMD pad layout info?
> >
> >
> > > Does anybody know where I can get information for the various
> > > dimensions of the pads for SSOP devices? I want to create the
> > > components in my CAD program but I don't know the recommended pad
> > > sizes. The one I'm working on now is a 20-pin SSOP.
> >
> > Philips has a useful document on their web site with most SMD
> footprints in
> > it. They will probably need some adjustment for home-made PCBs and
> hand
> > soldering.
> >
> > Leon
> > --
>
>
> I'll look for it. Thanks, Leon.

Here is something I found that is more generally useful, on the ALTIUM web
site:

http://www.altium.com/libraries/pcb_footprint_search.asp

Leon
--
Leon Heller, G1HSM
Email: aqzf13@...
My low-cost Philips LPC210x ARM development system:
http://www.geocities.com/leon_heller/lpc2104.html

Re: Where can I find SMD pad layout info?

2004-01-25 by Dave Mucha

--- In Homebrew_PCBs@yahoogroups.com, "jocjo_john" <jocjo_john@y...> 
wrote:
> Does anybody know where I can get information for the various 
> dimensions of the pads for SSOP devices? I want to create the 
> components in my CAD program but I don't know the recommended pad 
> sizes. The one I'm working on now is a 20-pin SSOP.
> 
> Thanks.
> 
> John

I typically go to Digi-key, find the device in question and check the 
data sheet that is offered.

Then I print out the parts of the data sheet I need to reference all 
the time, and save the PDF in the even I need to reference that also.

Dave

Re: Where can I find SMD pad layout info?

2004-01-26 by jocjo_john

--- In Homebrew_PCBs@yahoogroups.com, "jocjo_john" <jocjo_john@y...> 
wrote:
> Does anybody know where I can get information for the various 


My thank-you post did not make it, I see. So..

Thanks Leon and Dave. I got the info and finished the job. I knew I 
could count on the people in this group for help.

John