Hi Inge, The main benefit is the column height which?makes it possible?to attach ceramic BGAs to PCBs without the large CTE-mismatch causing failures too early. Werner -----Original Message----- From: Inge <[log in to unmask]> To: [log in to unmask] Sent: Tue, Aug 11, 2009 5:49 pm Subject: Re: [TN] HDI AND COLUMN GRID ARRAY PACKAGING As far as I understand, they have two main benefits: well defined and extremly good heat transportation and withstand temp changes better than anything else, is it so?? ? ----- Original Message ----- From: "Stadem, Richard D." <[log in to unmask]>? To: <[log in to unmask]>; "Inge" <[log in to unmask]>? Sent: Tuesday, August 11, 2009 11:45 PM? Subject: RE: [TN] HDI AND COLUMN GRID ARRAY PACKAGING? ? Yes. The IBM PowerPC package is one example. Millions of them out there.? They are very popular on Telecomm CCAs.? ? -----Original Message-----? From: TechNet [mailto:[log in to unmask]] On Behalf Of Inge? Sent: Tuesday, August 11, 2009 4:43 PM? To: [log in to unmask] Subject: Re: [TN] HDI AND COLUMN GRID ARRAY PACKAGING? ? IBM invented them, but did they ever use them ?? Inge? ? ----- Original Message ----- From: "David D. Hillman" <[log in to unmask]>? To: <[log in to unmask]>? Sent: Tuesday, August 11, 2009 11:23 PM? Subject: Re: [TN] HDI AND COLUMN GRID ARRAY PACKAGING? ? > Hi Lee - Run............ run for the hills! A Column grid array? package is? > like having a BGA with coplanarity problems! The CGA are not? impossible to? > deal with but you do need to make sure that your stencil print? operation? > and solder paste volume values are repeatable and consistent. Also? check? > to see that the CGA in the trays do not have bent columns before you? > attempt to place them. Good Luck.? >? > Dave Hillman? > Rockwell Collins? > [log in to unmask] >? >? >? >? > Lee Whiteman <[log in to unmask]>? > Sent by: TechNet <[log in to unmask]>? > 08/11/2009 04:02 PM? > Please respond to? > TechNet E-Mail Forum <[log in to unmask]>; Please respond to? > [log in to unmask] >? >? > To? > [log in to unmask] > cc? >? > Subject? > [TN] HDI AND COLUMN GRID ARRAY PACKAGING? >? >? >? >? >? >? > We may be using column grid array packaging with ENIG finished High? > Density Interconnect (HDI) boards. Are there any ground rules for? using? > this type of technology?? >? > Lee Whiteman, PMP? > Senior Member Engineering Staff? > L-3 Communications East? > Telephone: (856) 338-3508? > FAX: (856) 338-2906? > E-Mail: [log in to unmask] >? > ---------------------------------------------------? > 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? ----------------------------------------------------- ? ---------------------------------------------------? 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 -----------------------------------------------------