Well that's was my feeling too, that it would matter, that's why I was questioning it. but the 64K question is "How much does it matter?". Thanks to everyone for all of your responses! Dave At 08:17 AM 11/24/2008, you wrote: >David, >It really depends on how much signal degradation you can handle. >In most cases you would be ok but if it is a 6G data line with very low >tolerance then >you may have issues. >To answer your original question though, I disagree that since you are >coupled to one plane that the >integrity of the other plane does not matter. In reality, you are somewhat >coupled to both planes so it does matter. >Regards >Ken > >_____________________________________ > Kenneth J. Wood >President >Saturn PCB Design, Inc. * <mailto:[log in to unmask]> >[log in to unmask] >2737 Bishop Lane * (407) 340-2668 >Deltona, Fl 32725 fax: (386) 789-2765 >www.saturnpcb.com >PCB_Design_new > > > > > > > >-----Original Message----- >From: TechNet [mailto:[log in to unmask]] On Behalf Of David Baldwin >Sent: Monday, November 24, 2008 9:36 AM >To: [log in to unmask] >Subject: [TN] Stripline Traces and Plane Splits > >Fellow Designers: > >I am designing a board with differential pairing in a stripline >configuration. One the bottom side is a solid ground plane. On the >top side is a split power plane. > >I was told that running traces across the splits is not a significant >problem as there is a solid ground plane on the other side for the >return currents to flow. > >Do you agree with this assessment and what has your personal >experience told you. > >Thanks in advance for your opinions and response. > >David Baldwin CID+ > >--------------------------------------------------- >Technet Mail List provided as a service by IPC using LISTSERV 15.0 >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/contentpage.asp?Pageid=4.3.16 >for additional information, or contact Keach Sasamori at [log in to unmask] or >847-615-7100 ext.2815 >----------------------------------------------------- > >--------------------------------------------------- >Technet Mail List provided as a service by IPC using LISTSERV 15.0 >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/contentpage.asp?Pageid=4.3.16 for additional >information, or contact Keach Sasamori at [log in to unmask] or >847-615-7100 ext.2815 >----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------