Steve I forgot to mention that there is an updated IPC spec IPC-2141 Controlled Impedance Circuit Boards and High Speed Logic Designs This is an improvement over IPC-317A And I give thumbs up! Inkra Networks Patrick Jabbaz CID Sr Board Layout Eng. 40971 Encyclopedia Circle Fremont, CA 94538 Work (510) 249-4835 Mobile (408) 621-6533 [log in to unmask] -----Original Message----- From: Steve Smith [mailto:[log in to unmask]] Sent: Thursday, October 03, 2002 11:43 AM To: [log in to unmask] Subject: [DC] IPC-D-317A Hi All, I am looking for a recommendation. I already have Howard Johnson's black magic book and while looking through the latest IPC catalog came across their IPC-D-317A which calls itself "Design guidelines for electronic packaging utilizing high speed techniques". Does anyone have this spec and could give me a thumbs up or down on it? Thanks, Steve Smith Product Engineer Staco Energy Products Co. Web Site: www.stacoenergy.com ------------------------------------------------------------------------ --------- DesignerCouncil Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF DesignerCouncil. To set a vacation stop for delivery of DesignerCouncil send: SET DesignerCouncil NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site http://www.ipc.org/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ------------------------------------------------------------------------ --------- --------------------------------------------------------------------------------- DesignerCouncil Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF DesignerCouncil. To set a vacation stop for delivery of DesignerCouncil send: SET DesignerCouncil NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site http://www.ipc.org/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------