Forced to agree with Dewey. With advent of LTSS ideology (Lighter, Thinner, Shorter, Smaller), have to do what makes everything fit and function to spec. Think marketing types and corporate wizards care about everything oriented same way on board? Used to be a tech-type late 70s, early 80s, so I know what it's like to build a board. If I can orient comps the same way, I will, but fit, form, and function come first. Only way I can put that 5 pounds into inexpensive 10 pound bag. Roger -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Whittaker, Dewey (EHCOE) Sent: Thursday, March 01, 2007 9:10 AM To: [log in to unmask] Subject: Re: [TN] Component Orientation Survey It is not just the designers fault. Functional integrity drives placement. Placement impacts routing. Routing dictates layer count. Layer count increases cost and thickness. Thickness increases aspect ratio. Higher aspect ratios decreases reliability. Decreased reliability increases cost. And it starts all over. Since I have final say it's my fault that we no longer have the luxury of a paint by number placement strategy. Dewey -----Original Message----- From: Joyce Koo [mailto:[log in to unmask]] Sent: Thursday, March 01, 2007 6:54 AM To: TechNet E-Mail Forum; Whittaker, Dewey (EHCOE) Subject: RE: [TN] Component Orientation Survey "The designs of today demand throwing away the constraints of the past." because the designer in the past have to make the prototype by themself... get the today's designer to do the solder touch up rework on their non-constraints design will fix it once for all... jk abcd -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Whittaker, Dewey (EHCOE) Sent: Thursday, March 01, 2007 8:47 AM To: [log in to unmask] Subject: Re: [TN] Component Orientation Survey We gave the dream of orthogonal placement up a long time ago. The designs of today demand throwing away the constraints of the past. Listening to all the whining from our EMS providers has caused me to reflect on that decision. Dewey -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Green, Mike Sent: Wednesday, February 28, 2007 6:59 PM To: [log in to unmask] Subject: [TN] Component Orientation Survey When you design boards, do you: -lay out similar polar components oriented in the same direction for ease of manufacture regardless of the shortest routing or -lay out each component oriented in the best position for routing regardless of the orientation of other similar parts? We have a difference of opinion as to which is more prevalent practice. --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e 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 1.8e 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 1.8e 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 1.8e 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 -----------------------------------------------------