Yes, very common, but that's not to say it's the best way. Try finding an open circuit via when there's a component over either side of it. Not common but it does happen. As for the autorouter, it does all sorts of weird and worrying things.
> -----Original Message----- > From: Dwight Harm [mailto:[EMAIL PROTECTED]] > Sent: Thursday, 21 February 2002 2:17 PM > To: Protel EDA Forum > Subject: Re: [PEDA] how does smt work ?? > > > I'm relatively new at PCB layout, so I'd like to verify -- aren't > under-the-component vias fairly common nowadays, particularly with > fine-pitch ICs and BGAs? The autorouter puts 'em there all > the time, so it > MUST be ok! ;) > > > -----Original Message----- > > From: Thomas [mailto:[EMAIL PROTECTED]] > > Sent: Wednesday, February 20, 2002 3:19 PM > > > <snip> > > The reason you may not notice the vias is that they may be > tented (covered > > with solder mask) or under the component (bad design practice). > * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
