Technical Library | 2014-11-06 16:43:24.0
This paper summarizes the results of recent investigations to examine the effect of electroless nickel process variations with respect to Pb-free (Sn-3.0Ag-0.5Cu) solder connections. These investigations included both ENIG and NiPd as surface finishes intended for second level interconnects in BGA applications. Process variations that are suspected to weaken solder joint reliability, including treatment time and pH, were used to achieve differences in nickel layer composition. Immersion gold deposits were also varied, but were directly dependent upon the plated nickel characteristics. In contrast to gold, different electroless palladium thicknesses were independently achieved by treatment time adjustments.
Industry News | 2021-01-21 08:09:52.0
Indium Corporation announces that it is now offering CW-232,a uniquely formulated flux-cored wire that combines superior wetting speed and spread with extremely low-spatter performance.
Industry News | 2019-04-03 20:07:41.0
Practical Components is a leading international distributor of mechanical IC samples or “dummy” components that has added a new SMTA Solder Paste Test Vehicle for Miniaturized Surface Mount Technology (SMT) to its array of Dummy Components, Solder Training Kits and PCB Evaluation Kits.
Industry News | 2022-03-14 08:18:45.0
Averatek is pleased to announce the addition of Jeff Berlin of TEC Associates to its marketing efforts. As a manufacturer's' representative, Berlin will be responsible for business development with Mina™, a surface treatment that enables soldering to aluminum. Replacing silver-based ACP (Anisotropic Conducting Paste) with solder, Mina™ offers more cost-effective and environmentally friendly manufacturing, with shorter processing times and reduced wet-chemistry steps.
New Equipment | Cleaning Equipment
DEK SMT High Performance Cleaning Rolls are engineered to boost productivity and yield, reduce the risk of defects and minimise rework. An ideal choice for a superior clean of the stencil underside. To maximise pre-placement yield, it is imperative
New Equipment | Test Equipment
Agilent/HP DSO81304B-001-003-004-005-009-N5413A-U7231A, 13GHz 4 Channel 40GSa/s Infiniium Oscilloscope. The Agilent Technologies Infiniium 80000B Series and InfiniiMax II probing system will lead to improved measurements and increased design margin
Industry News | 2015-05-13 14:00:03.0
The evolution of soldering processes in the Microelectronics Industry has made a paradigm shift away from Sn/ Pb to Pb-free. Compounded with advancements in miniaturization, Pb- free soldering's higher re-flow temperature and the nature of solder has resulted in poor reliability relative to: mechanical strength of the solder joint, warpage and thermal cycling performance. In response, YINCAE engineered low temperature solder joint encapsulation adhesives.
Industry News | 2017-02-05 09:21:06.0
Solder balls and solder beading have been a process issue for many years and they may not cause product failure or quality problems but they are not desirable. Solder balls are caused by a variety of factors in different processes and should be resolved to eliminate a poorly defined process or a process and materials which are out of control With over 40 years in industry and 30 solving process problems for industry Bob Willis explains the causes and curses for solder balls. Bob’s webinar features many unique process video clips on testing and failures and make his sessions come alive providing a much better understanding of the root cause of failure and corrective action. For further details go to http://www.bobwillis.co.uk/event/solder-ball-elimination-in-wave-selective-reflow/
Technical Library | 2023-09-26 19:14:44.0
The transition from tin-lead to lead free soldering in the electronics manufacturing industry has been in progress for the past 10 years. In the interim period before lead free assemblies are uniformly accepted, mixed formulation solder joints are becoming commonplace in electronic assemblies. For example, area array components (BGA/CSP) are frequently available only with lead free Sn-Ag-Cu (SAC) solder balls. Such parts are often assembled to printed circuit boards using traditional 63Sn-37Pb solder paste. The resulting solder joints contain unusual quaternary alloys of Sn, Ag, Cu, and Pb. In addition, the alloy composition can vary across the solder joint based on the paste to ball solder volumes and the reflow profile utilized. The mechanical and physical properties of such Sn-Ag-Cu-Pb alloys have not been explored extensively in the literature. In addition, the reliability of mixed formulation solder joints is poorly understood.
Time and temperature are very important variables in soldering printed circuit boards. It is important to bring the circuit board assemblies up to a high enough temperature for a long enough period to effectively solder the components to the board. G
