You might want to search/review the PEDA archive. If I'm not mistaken, this topic was discussed at some length about three or four years ago (perhaps a bit longer) by quite a few people in the group who appeared to me at the time to be "heavy hitters" in PCB layout/design...
>Browse or Search Old Archives (2001-2004): >http://www.mail-archive.com/[EMAIL PROTECTED] FWIW, it has always seemed to me that a solution lies in the fact that a surface mount pad is essentially just a fill. If it is acceptable for the PCB routing to be dominated by the thru-hole pad, then loss of "pad" status for the tandemed "virtual" surface mount pad would not be of any functional merit. This means that one could create a component incorporating both rule-based thru-hole pads and surface mount features (not single-layer pads...) that functionally act as surface mount pads, then what's the harm? regards, aj "The inside's bigger than the outside" - Dr Who >-----Original Message----- >From: [EMAIL PROTECTED] >[mailto:[EMAIL PROTECTED] On Behalf Of John Dammeyer >Sent: Monday, October 01, 2007 11:40 PM >To: 'Protel EDA Discussion List' >Subject: [PEDA] Mixing Surface mount and through hole in one >PCB component. > >I'm trying to make a circuit board with pushbutton switches >universal enough so it can use either a through whole switch >pattern or a surface mount one. The four through hole pads >fit nicely outside the surface mount pattern. I've labelled >each of the pairs designators the same so I have a round >through hole with a designator 1 and a surface mount with designator 1. > >However, it seems Protel 99SE has problems with two pads with >the same designator. ____________________________________________________________ You are subscribed to the PEDA discussion forum To Post messages: mailto:[email protected] Unsubscribe and Other Options: http://techservinc.com/mailman/listinfo/peda_techservinc.com Browse or Search Old Archives (2001-2004): http://www.mail-archive.com/[EMAIL PROTECTED] Browse or Search Current Archives (2004-Current): http://www.mail-archive.com/[email protected]
