I read a little about this topic. To 90 degree bend, there will be overlap area. It behaves as capacitive discontinuity. Moreover, the sharp point at the corner will enlarge electrical field. regards Dhaval Bhodia <bhodia1@xxxxxxxxx> wrote: Dear Experts I want to know that why PCB tracks can not have 90 degree bend ? second why 45 degree bend is most preferable ? anybody has made any analysis on bending of PCB tracks ? what are the technical issues will come if some one makes 90 degree bend in PCB ? What are electrone and transmission line charasterisic stops to make that 90 degree turn in PCB tracks ? Regards Dhaval __________________________________________________ --------------------------------- Do you Yahoo!? Next-gen email? Have it all with the all-new Yahoo! Mail Beta. ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu