Hi Werner! Ok, so you don't want to read the whole web site! : - ) Here is a more specific link: http://acqp2.nasa.gov/LFS%20Reliability/Rockwell%20Collins%20Inc%20JCAA%20JGPP%20Final%20Report%20neg55C%20to%20pos125C%20testing%20Rev%20B.pdf The shrinkage void data is in the Thermal Cycle individual report (see figure 45, page 33) on shrinkage voids. We ran thermal cycle testing -55C to +125C for 4700+ cycles per IPC-9701 and did not find an occurrence were a shrinkage void caused a failure or acted as a stress riser. Dave [log in to unmask] 02/22/2008 04:37 PM To [log in to unmask], [log in to unmask] cc Subject Re: [TN] Shrink hole voids Hi Dave & All, http://acqp2.nasa.gov/LFS%20Reliability/JTR%20Executive%20Summary%20Draft%20July-14-2006.pdf JCAA/JG-PP Lead-Free solder Project, Joint Test Report, Draft July 14, 2006 only makes a one-sentance statement that "Solder Joint Shrinkage Voids and Fillet Lifting: No thermal cycle failures were observed due to the presence of solder joint shrinkage voids or fillet lifting phenomena." I certainly would not draw any conclusions from this. Coyle's paper deals with gaseous voids, not shrinkage voids. Werner ************** Ideas to please picky eaters. Watch video on AOL Living. ( http://living.aol.com/video/how-to-please-your-picky-eater/rachel-campos-duffy/2050827?NCID=aolcmp00300000002598 ) --------------------------------------------------- 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 -----------------------------------------------------
