I've seen several designs where the designfiles show silkscreen over the pads, and normally the fabhouse edits the gerberdata to remove the legend on these places. A good boardvendor should at least notify you that there is a problem. Frank Agillo On Tue, 30 Jul 2002 10:45:30 -0400, "Croslin, Robert" <[log in to unmask]> said: > Ken, we don't view this as a fabrication problem, but as a design one. We > use p-cad which is a lower end PCB design tool as opposed to Mentor, > Cadence, etc. One of the things it does for us as part of the DRC is to > tell us if we've placed any legend on or near a pad, depending on how we've > defined our keep out areas. The other thing we do is work with our fab > house very closely during the prototype stage to help us look for those kind > of things. Anyway, you may want to talk with your PCB designer to see what > the tool they're using can provide in checking for legend clearance. > > Bob > Robert A. Croslin > Manager, Engineering Services > Nielsen Media Research > 375 Patricia Ave > Dunedin, FL 34698 > 727-738-7033 > [log in to unmask] > > > > -----Original Message----- > From: Ken Carlile [mailto:[log in to unmask]] > Sent: Monday, July 29, 2002 3:35 PM > To: [log in to unmask] > Subject: [TN] Silscreen on SMT pads > > Can anyone kindly tell me if IPC has a guideline for silkscreen on SMT pads? > Our master drawing notes > read: "As with solder mask, no marking ink shall encroach or be apparent on > solder termination pads or > areas". Therefore we have internal reason to reject these, however I was > hoping there was an industry standard. > > ---------------------------------------------------------------------------- > ----- > Technet Mail List provided as a free service by IPC using LISTSERV 1.8e > To unsubscribe, send a message to [log in to unmask] with following text in > the BODY (NOT the subject field): SIGNOFF Technet > To temporarily halt or (re-start) delivery of Technet send e-mail to > [log in to unmask]: SET Technet NOMAIL or (MAIL) > To receive ONE mailing per day of all the posts: send e-mail to > [log in to unmask]: SET Technet Digest > Search the archives of previous posts at: http://listserv.ipc.org/archives > Please visit IPC web site http://www.ipc.org/html/forum.htm for additional > information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 > ext.5315 > ---------------------------------------------------------------------------- > ----- > > --------------------------------------------------------------------------------- > Technet Mail List provided as a free service by IPC using LISTSERV 1.8e > To unsubscribe, send a message to [log in to unmask] with following text in > the BODY (NOT the subject field): SIGNOFF Technet > To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) > To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest > Search the archives of previous posts at: http://listserv.ipc.org/archives > Please visit IPC web site http://www.ipc.org/html/forum.htm for additional > information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 > --------------------------------------------------------------------------------- > -- http://fastmail.fm - Taking the "ail" out of email! --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------