Technical Library | 2019-07-10 23:36:14.0
Pockets of gas, or voids, trapped in the solder interface between discrete power management devices and circuit assemblies are, unfortunately, excellent insulators, or barriers to thermal conductivity. This resistance to heat flow reduces the electrical efficiency of these devices, reducing battery life and expected functional life time of electronic assemblies. There is also a corresponding increase in current density (as the area for current conduction is reduced) that generates additional heat, further leading to performance degradation.
Technical Library | 2023-01-17 17:19:44.0
A test program was developed to evaluate the effectiveness of vacuum reflow processing on solder joint voiding and subsequent thermal cycling performance. Area array package test vehicles were assembled using conventional reflow processing and a solder paste that generated substantial void content in the solder joints. Half of the population of test vehicles then were re-processed (reflowed) using vacuum reflow. Transmission x-ray inspection showed a significant reduction in solder voiding after vacuum processing. The solder attachment reliability of the conventional and vacuum reflowed test vehicles was characterized and compared using two different accelerated thermal cycling profiles. The thermal cycling results are discussed in terms of the general impact of voiding on solder thermal fatigue reliability, results from the open literature, and the evolving industry standards for solder voiding. Recommendations are made for further work based on other void reduction methods and additional reliability studies.
Industry News | 2019-12-09 14:44:26.0
The SMT Reflow Soldering Equipment (Global) award was awarded to Heller Industries by Frost & Sullivan.
Industry News | 2003-04-15 08:57:18.0
First Implementation of the Package Platform Delivers 50-percent Cost, 60-percent Height, and 75-percent Area Reductions over Conventional RF Module Technologies
Industry News | 2003-03-25 09:15:19.0
The Dragon was demonstrated at the CPCA show in Shanghai last week
Industry News | 2003-06-20 08:31:58.0
Leading chip timing solutions provider manufactures fast memory interface clock generators for high-bandwidth applications
Industry News | 2003-05-29 08:30:31.0
Losses halved in the first half year � New organization of electronics group next on the agenda
Industry News | 2003-04-25 08:11:22.0
Diluted earnings per share for the quarter were $0.36 compared to the $0.24 earned in last year�s first quarter.
Industry News | 2003-07-10 08:36:25.0
To execute this strategic plan, KEMET is reorganizing its operations around the world.
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