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.
Technical Library | 2016-01-08 11:56:03.0
Solder joint encapsulant adhesives have been successfully used to enhance the strength of solder joints and improve thermal cycling as well as drop performance in finished products. The use of solder joint encapsulant adhesives can eliminate the need for underfill materials and the underfill process altogether, thus simplifying rework, which results in a lower cost of ownership.Solder joint encapsulant adhesives include: low temperature and high temperature solder joint encapsulant adhesives, and their derivatives. Each solder joint encapsulant adhesive has: unfilled and filled solder joint encapsulant adhesives, and solder joint encapsulant paste. Each solder joint encapsulant product has been designed for different applications. In this paper, we are going to discuss the details and future of solder joint encapsulant adhesives.
Industry News | 2021-10-07 15:38:24.0
Averatek is pleased to announce that it will present a paper during the during the SMTA International Conference Nov. 1-4, 2021 at the Minneapolis Convention Center. Divyakant Kadiwala, Nazarali Merchant, Ph.D., and Benny Lam co-authored "Reliability of Solder Joints on Flexible Aluminum PC Boards."
Technical Library | 2015-02-12 16:57:56.0
Electronic systems are known to be affected by the environmental and mechanical conditions, such as humidity, temperature, thermal shocks and vibration. These adverse environmental operating conditions, with time, could degrade the mechanical efficiency of the system and might lead to catastrophic failures.The aim of this study is to investigate the mechanical integrity of lead-free ball grid array (BGA) solder joints subjected to isothermal ageing at 150°C for up to 1000 hours. Upon ageing at 150°C the Sn-3.5Ag solder alloy initially age-softened for up to 200 hours. This behaviour was linked to the coarsening of grains. When aged beyond 200 hours the shear strength was found to increase up to 400 hours. This age-hardening was correlated with precipitation of hard Ag3Sn particles in Sn matrix. Further ageing resulted in gradual decrease in shear strength. This can be explained as the combined effect of precipitation coarsening and growth of intermetallic layer. The fractured surfaces of the broken solder balls were also investigated under a Scanning Electron Microscope. The shear failures were generally due to ductile fractures in bulk solders irrespective of the ageing time.
Industry News | 2016-04-04 09:33:43.0
Nordson DAGE, MatriX Technologies and Nordson YESTECH, divisions of Nordson Corporation (NASDAQ: NDSN), will exhibit their range of market leading Test and Inspection systems in Hall 7A, Booth 329 at the forthcoming SMT/Hybrid/Packaging, scheduled to take place April 26-28, 2016 at the Messe in Nuremberg, Germany.
Industry News | 2015-12-28 17:22:37.0
Nihon Superior will exhibit in East Hall 1 E3-18 at NEPCON Japan, scheduled to take place Jan. 13-15, 2016 at the Tokyo Big Site in Japan. The reliability of SN100C has been proven in a wide range of electronics assembly products. The eutectic character of the silver-free SN100C alloy and the associated high fluidity provides faster wetting and increased spreadability over SAC305, which is beneficial in wave soldering and hand soldering applications as well as in reflow.
Industry News | 2023-10-16 12:40:17.0
Indium Corporation was recently the proud recipient of Electronics Maker's prestigious Best of Industry Award 2023 for Best Soldering Product of the Year. The award was received for Indium Corporation's InFORMS® reinforced solder preforms.
Industry News | 2016-02-16 18:00:40.0
Nihon Superior will exhibit in Booth #2610 at the IPC APEX EXPO, scheduled to take place March 15-17, 2016 at the Las Vegas Convention Center. The reliability of the company’s SN100C lead-free alloy has been proven in a wide range of electronics assembly products. The eutectic character of the silver-free SN100C alloy and the associated high fluidity provides faster wetting and increased spreadability over SAC305, which is beneficial in wave soldering and hand soldering applications as well as in reflow.
Industry News | 2013-01-16 08:45:06.0
Nihon Superior Co. Ltdwill introduce a range newly developed products that offer solutions for some of the challenges the electronics industry is now facing, lead-free die attach, void minimization, environmental protection, and process yields.
Technical Library | 2008-04-08 17:42:27.0
Concern about the failure of lead-free BGA packages when portable devices such as cell phones are accidentally dropped and a general concern about the resistance of these packages under shock loading has prompted an interest in the impact strength of the soldered BGA connection. This paper reports the results of the measurement of the impact strength of lead-free 0.5±0.01mm diameter BGA spheres on 0.42mm solder mask defined pads on copper/OSP and ENIG substrates using recently developed equipment that can load individual BGA spheres at high strain rates in shear and tension.
