Naren, Howard Johnson has a very nice DVD for sale on his Web site that gives a great explanation of this called: Parasitic Inductance of a Bypass Capacitor http://www.sigcon.com/SiLab/filmsNow.htm=20 Ken -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On Behalf Of Naren Thesia Sent: Friday, December 09, 2005 9:31 AM To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Via inside SMD discrete Hi All, My question is related to general PCB discussion. Recently I saw via between the component pad for SMD decap (As shown in attached screen shot). I got clarification that it is to improve the performance of decap in High speed design! I unable to understand that clearly. Any one can share his or her experience? Thanks in advance -- Binary/unsupported file stripped by Ecartis -- -- Type: image/jpeg -- File: Capacitor.jpg ------------------------------------------------------------------ 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: =20 //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 =20 ------------------------------------------------------------------ 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