> What is the smallest reasonable text size for silkscreen text. Text
> height, width, and thickness. With design density increasing, we would
> still like to have as many ref des possible.  From a PCB designer,
> what tooling parameters are acceptable for good resolution on the
> finished products.
> 

There is an excellent article on the subject of silkscreening in Printed 
Circuit Design magazine by Mary Sugden and Mona Johnson.  It began in the 
November 1996 issue and ended in February 1997.  My company was considering 
adding the reference designations on our boards about the time the articles 
started.  I showed my supervisor the articles and pointed out that they 
recommended that it not but used BUT if you must, these are the points you must 
consider.  Fortunately we are not going to mark our boards.  We have little 
enought room for the things we need to add without adding "bells and whistles" 
to the artwork (not to mention cost).

Hope this helps!

JoAnn L. Amerson
Design Librarian
Red Lion Controls, Inc.
E-mail: [log in to unmask]
Voice: (717) 767-6961 ext 6308

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