Re: gEDA-user: SOT23

[Steve Meier <smeier@xxxxxxxxxxxxxxxxxxx>]

Well, you can't download the whole thing as a single pdf. But you can
get to all the packages as individual pdfs.

Go to www.jedec.org

Click on standards and publications. If it your first visit it will
probably force you to register.

After you get to the standards and publications page.

http://jedec.org/download/default.cfm

Click on the JEP-95 Main Page link

>From here you can click on a selection of component types such as

Microelec. Outlines.

This leads to a page which has a list of all the MO-whatever number

Pull down until you find MO-178-C and click on the pdf file MO-178c.pdf

Steve Meier


On Wed, 2005-01-12 at 10:15, Karel Kulhavy wrote:
> On Wed, Jan 12, 2005 at 10:05:42AM -0800, Steve Meier wrote:
> > Ok, pull out JEDEC Publication 95 Book three. Everybody with me and have
> 
> Where can I doenload JEDEC Publication 95 Book three ?
> 
> Cl<
> > their copy handy ;) 
> > 
> > The following part matches the JEDEC specification for MO-178 which is a
> > version of SOT23-5
> > 
> > http://cache.national.com/ds/LP/LP3985.pdf
> > 
> > I prefer the JEDEC-95 specification for packages because.... components
> > which reference them have the correct dimensions and pin numbering.
> > 
> > The JEDEC standard JEP-95 may be viewed on line at www.jedec.org
> > To reach the JEP-95 pdf files you need to register for free.
> > 
> > I am curious to know which SOT23-5 packages differ from the MO-178
> > standard. Can some one post an example.
> > 
> > Thanks,
> > 
> > Steve Meier
> > 
> > 
> > On Wed, 2005-01-12 at 07:07, Daniel J Wisehart wrote:
> > > On Tuesday 11 January 2005 05:39, Dan McMahill wrote:
> > > > On Tue, Jan 11, 2005 at 12:14:40AM -0800, Matt Ettus wrote:
> > > > > Is there a SOT23-5 footprint somewhere in PCB?  And does anyone have a
> > > > > mapping between SOTxx and SCxx numbers?
> > > >
> > > > There are some SOT and SC footprints in ~geda.  Especially with these,
> > > > you really really really (I can't stress it enough) want to verify
> > > > the footprint before using them.  This is because I know of at least
> > > > 2 different ways the pins on a SOT23-3 are numbered by different
> > > > vendors.
> > > 
> > > I agree with that.  We used the SOT23-5 footprint and it was wrong for our 
> > > part, so we had to glue the parts on upside down on our prototype. :-(
> > > 
> > > Regards,
> > > Daniel
> >