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
Technical Library | 2015-07-16 17:24:23.0
Qualification of electronic hardware from a corrosion resistance standpoint has traditionally relied on stressing the hardware in a variety of environments. Before the development of tests based on mixed flowing gas (MFG), hardware was typically exposed to temperature-humidity cycling. In the pre-1980s era, component feature sizes were relatively large. Corrosion, while it did occur, did not in general degrade reliability. There were rare instances of the data center environments releasing corrosive gases and corroding hardware. One that got a lot of publicity was the corrosion by sulfur-bearing gases given off by data center carpeting. More often, corrosion was due to corrosive flux residues left on as-manufactured printed circuit boards (PCBs) that led to ion migration induced electrical shorting. Ion migration induced failures also occurred inside the PCBs due to poor laminate quality and moisture trapped in the laminate layers.
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.
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.
Industry News | 2023-10-23 09:57:34.0
Koh Young Technology, the leader in True3D™ measurement-based inspection solutions changed the industry over 20-years ago with its multi-projection solder paste inspection machine. The electronics manufacturing industry quickly adopted the patented technology, which is now the de facto standard SPI machine in the market. On 30 October during the SMTA Tampa Bay Technical Forum, Ray Welch, Senior Applications Engineer at Koh Young will discuss the growing importance of SPI as a process improvement tool.
Industry News | 2011-02-10 12:52:31.0
Christopher Associates Inc. introduces the Machvision Hole Doctor - II, the most advanced hole verification system on the market.
Industry News | 2017-01-18 05:21:35.0
This photo CD ROM provides the process or quality engineer with a source of PIHR photographs of the assembly process, components and process defects which may be used in company inspection document or training presentations. They may be simply pasted into any document for in house company use. Now over 250 photographs are provided in either jpg or tif file format for use in PowerPoint, Word inspection standards or online publications royalty free http://www.bobwillis.co.uk/product-category/photo-cd-rom/
Industry News | 2013-09-30 18:14:34.0
Free Session, Spotlight 4, October 16, 2013 from 9:30-11:00 AM
Industry News | 2003-03-11 09:04:04.0
Developed in response to customer requirements, the new Via Fill process from DEK delivers 100% fill of substrate vias with no voids and minimal surface residue.
Industry News | 2007-10-23 17:27:36.0
Indium Corporation�s *Indium5.1AT Pb-Free Solder Paste *is an Award-Winning No-Clean, Pb-Free Solder Paste that delivers enhanced finished goods reliability by featuring;
