What are we looking in the ball photo? Are these voids caused by a test socket? What testing was the device subjected causing these voids? And lastly is the damage detected before attachment to the board? -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of [log in to unmask] Sent: Monday, September 09, 2002 10:27 AM To: [log in to unmask] Subject: Re: [TN] 1mm bga voiding Victor and other Technetters, Hopefully this link shows the 1mm BGA picture (x-section) http://www.ofoto.com/PhotoView.jsp?UV=922011120789_31499403105&US=0&collid=2 9888403105&photoid=19888403105 Al Victor Hernandez <[log in to unmask]>@IPC.ORG> on 09/09/2002 12:23:59 PM Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please respond to [log in to unmask] Sent by: TechNet <[log in to unmask]> To: [log in to unmask] cc: Subject: Re: [TN] 1mm bga voiding Al, The IPC-A-610C sec. 12.2.12 Area Array/Ball Grid Array states that " Acceptable - Class 1,2,3 Less than 10% voiding in the ball to board interface. Process Indicator - Class 2,3 10-25% voiding in the ball to board interface. What is the SIZE of the ball you are using. Did we have to SIGN UP to the Web Page to view your photo. Perhaps a fellow TechNetter can offer their site for viewing. victor, -----Original Message----- From: [log in to unmask] [mailto:[log in to unmask]] Sent: Monday, September 09, 2002 9:13 AM To: [log in to unmask] Subject: [TN] 1mm bga voiding Technetters- We are getting 1mm BGA devices with these mechanical defects (see attached* for link to picture) from testing processes at the vendor. These devices have excessive voiding when reflowed on to a board with other BGAs that do not have a voiding problem. The vendor insists it is our process that causes the voiding. Question- would you expect this mechanical damage to lead to voiding in the reflowed joint? * http://www.ofoto.com/ShareLandingSignin.jsp?UV=922011120789_31499403105&US=0 &Upost_signin=OrderPhotos.jsp%3FshowSlide%3Dtrue&Un=774560513&Um=54718403105 .84079403105 Al ---------------------------------------------------------------------------- ----- Technet Mail List provided as a free 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------- ----- ---------------------------------------------------------------------------- ----- Technet Mail List provided as a free 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------- ----- ---------------------------------------------------------------------------- ----- Technet Mail List provided as a free 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------- ----- --------------------------------------------------------------------------------- Technet Mail List provided as a free 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------