Electronics Forum | Tue Aug 16 09:37:58 EDT 2011 | blnorman
Dye and pry is frequently used on BGAs to determine if there is a crack at the board level or component level interconnect. C-SAM will show internal delaminations of components, not sure how well it would work with solder joint cracks. You can also
Electronics Forum | Wed Jan 09 14:52:53 EST 2002 | Chris
Hi, I have read many articles about theromsonically bonding to soft gold. Many of these articles state you can bond to 10uinches of gold. I have worked with both Hughes and Panasonic bonders at two different companies and I have never been able to
Industry News | 2011-02-24 20:35:03.0
The SMTA is pleased to announce the program for the 2011 International Conference on Soldering and Reliability being held May 3-6 in Toronto, Ontario, Canada.
Industry News | 2012-03-08 22:21:34.0
The SMTA is pleased to announce the program for the 2012 International Conference on Soldering and Reliability being held May 15-18 in Toronto, Ontario, Canada. Following on the very successful 2005 and 2006 International Conferences on Lead-free Soldering, and the SMTA International Conference on Soldering and Reliability held in Toronto since 2007, this conference will bring together the community of soldering and reliability experts. The event will be co-located with the SMTA Lead-Free Academy and the SMTA Toronto Expo.
Technical Library | 2023-01-17 17:27:13.0
Reflow profile has significant impact on solder joint performance because it influences wetting and microstructure of the solder joint. The degree of wetting, the microstructure (in particular the intermetallic layer), and the inherent strength of the solder all factor into the reliability of the solder joint. This paper presents experimental results on the effect of reflow profile on both 63%Sn 37%Pb (SnPb) and 96.5%Sn 3.0%Ag 0.5%Cu (SAC 305) solder joint shear force. Specifically, the effect of the reflow peak temperature and time above solder liquidus temperature are studied. Nine reflow profiles for SAC 305 and nine reflow profiles for SnPb have been developed with three levels of peak temperature (230 o C, 240 o C, and 250 o C for SAC 305; and 195 o C, 205 o C, and 215 o C for SnPb) and three levels of time above solder liquidus temperature (30 sec., 60 sec., and 90 sec.). The shear force data of four different sizes of chip resistors (1206, 0805, 0603, and 0402) are compared across the different profiles. The shear force of the resistors is measured at time 0 (right after assembly). The fracture surfaces have been studied using a scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS)
Technical Library | 2007-03-08 19:31:10.0
Reflow profile has significant impact on solder joint performance because it influences wetting and microstructure of the solder joint. The degree of wetting, the microstructure (in particular the intermetallic layer), and the inherent strength of the solder all factor into the reliability of the solder joint. This paper presents experimental results on the effect of reflow profile on both 63%Sn 37%Pb (SnPb) and 96.5%Sn 3.0%Ag 0.5%Cu (SAC 305) solder joint shear force.
SMT Express, Issue No. 5 - from SMTnet.com Volume 1, Issue No. 5 Wednesday, October 13, 1999 Featured Article Return to Front Page A New Light-Weight Electronic Packaging Technology Based On Spray-Formed Silicon-Aluminiumby David M. Jacobson
SMT Express, Volume 2, Issue No. 3 - from SMTnet.com Volume 2, Issue No. 3 Thursday, March 16, 2000 Featured Article Return to Front Page Curtailing Voids in Fine Pitch Ball Grid Array Solder Joints by Gary Morrison and Kevin Lyne
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/RSS_ipcjstd001-gull-wing-leads-and-solder-joints_topic2587.xml
;However, the FED in Germany did pick up the Proportional Pad Stack model and published a book on it by Rainer Taube. IPC-J-STD-001 Gull Wing Leads and Solder Joints
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Quality Requirements and Formation Process of Reflow Solder Joints-News-Reflow oven,SMT Reflow Soldering Oven-cmsadmin Home About
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