jtm,
Don't have a website for you, but do have a couple suggestions.
Instead of looking for a "general" solution: Talk to the folks you
would have (potentially) doing this for you...
There are a wide variety of pick and places being used, from older
models to the latest/greatest; and the "rules" will be different for
each.
In addition, the number of trays and reels that the stuffing house
machine(s) can handle may be a further influence on your design...
Sometimes using two or even three parts of a type that you "already"
are using elsewhere on the board, ends up being less expensive than
using the "one" part which "can do" what the three parts replicate.
This is because you are ordering larger numbers of fewer parts, and
the pick and place speed in placing THREE parts will make up for the
need to place ONE "weird" part... (That may require a second run,
because the reels/bins are all used up..)
But the folks you want answering this are the ones you're going to
trust to populate and solder the boards for you, IMO...
Hope this helps,
Ballendo
P.S. You'll also need them to tell you where they expect different
parts to be "picked up"... Not all machines work the same way...
--- In Homebrew_PCBs@yahoogroups.com, "mdgolfbum" <jim@j...> wrote:
> Is there a website that describes rules for layout that will ensure
> adequate spacing for pick and place machines?
>
> I'm doing a few by hand but if the project is successful I might
> have a shot a selling a thousand or so. Can't see myself sitting in
> the basement soldering finelines that long...
>
> tnx
> jtm