most of what you say is, of course, correct but one part of this message is not correct
an unplated hole of the same size as a plated hole will generate a separate tool number this is one of the good things they finally did a while back and has been a big help this does not explain however whatever it is the bd shop is complaining about Dennis Saputelli Brad Velander wrote: > > Igor, > one warning, making top layer pads with a drill has it's own error. > We have done this for years and if the pad is top layer only (not a > multilayer with the bottom turned off) then there is a problem with drill > information. I forget the specifics but I believe that a drill drawing does > not show the drill symbol on pads that are top layer only. I cursed and > swore when this one bit me ages ago but others on the list just thought I > was nuts to specify what they called a SMD pad with a drill. > > The only work-around is to use a multilayer pad with the bottom > layer turned off (0 size). Then you do get the warnings of the unplated > pads. As well you will get unrouted errors just because the unplated pad may > be interrupting a signal path and Protel doesn't have the smarts to figure > out if it is really an open or not. > > As for the shop's request, how do they know which pads are unplated > if it is not specified? Without it being specified in the pad configuration > then the drill file would not differentiate them from plated holes of the > same size. The shop would have to hunt for the unplated pads by comparing a > drill symbol drawing and sort out the coordinates of those unplated holes. > Not to mention the possibility that someone just screws up because the drill > report file says they are plated and they are drilled during initial drill > instead of as a second drill operation. > > Sincerely, > Brad Velander. > > Lead PCB Designer > Norsat International Inc. > Microwave Products > Tel (604) 292-9089 (direct line) > Fax (604) 292-9010 > email: [EMAIL PROTECTED] > http://www.norsat.com > Norsat's Microwave Products Division has now achieved ISO 9001:2000 > certification > > > -----Original Message----- > > From: Igor Gmitrovic [mailto:[EMAIL PROTECTED]] > > Sent: Thursday, September 19, 2002 6:09 PM > > To: Protel EDA Forum > > Subject: Re: [PEDA] Unplated pads > > > > > > Just make them Top Layer pads. > > > > Igor > > -- ___________________________________________________________________________ www.integratedcontrolsinc.com Integrated Controls, Inc. tel: 415-647-0480 2851 21st Street fax: 415-647-3003 San Francisco, CA 94110 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/[email protected] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
