Eric, Solder joint inspection-by X-ray. Solder paste deposition MUST be inspected-height is crucial, stencil opening and pad geometry.look at: http://www.amkor.com/products/notes_papers/appnotes_LGA_0902.pdf http://www.eettaiwan.com/ARTICLES/2001JUN/2001JUN07_SMT_DH_AN1928.PDF Gaby ----- Original Message ----- From: "Eric CHRISTISON" <[log in to unmask]> To: <[log in to unmask]> Sent: Monday, February 14, 2005 4:39 PM Subject: Re: [TN] LGA Packages > Thanks Joyce, > > I would have thought them to have worse fatigue characteristics than BGA > plus I'd expect them to be difficult to inspect and impossible to rework but > I'm often wrong... > > > Eric Christison > Mechanical Engineer > Consumer & Micro Group - Imaging Division > STMicroelectronics > 33 Pinkhill > Edinburgh > EH12 7BF > > Tel: +44 (0)131 336 6165 > Fax: +44 (0)131 336 6001 > > > > -----Original Message----- > > From: Joyce Koo [mailto:[log in to unmask]] > > Sent: Monday, February 14, 2005 2:16 PM > > To: TechNet E-Mail Forum; Eric CHRISTISON > > Subject: RE: [TN] LGA Packages > > > > > > better fatique characteristics... it depends..(Introduction > > to Doug Paul...). > > jk > > > > -----Original Message----- > > From: TechNet [mailto:[log in to unmask]]On Behalf Of Eric CHRISTISON > > Sent: Monday, February 14, 2005 6:07 AM > > To: [log in to unmask] > > Subject: [TN] LGA Packages > > > > > > Does anyone have any experience of such a package type. > > > > If so what are they? Good, bad or indifferent? > > > > Thanks, > > > > > > Eric Christison > > Mechanical Engineer > > Consumer & Micro Group - Imaging Division > > STMicroelectronics > > 33 Pinkhill > > Edinburgh > > EH12 7BF > > > > Tel: +44 (0)131 336 6165 > > Fax: +44 (0)131 336 6001 > > > > --------------------------------------------------- > > 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 -----------------------------------------------------