抄録
It is recognized strongly that the reliance of the material properties is extremely important. The material properties that we use in the numerical analysis, controls the quality of the analysis result directly. The best choice to use the correct properties is that we measure them by ourselves. However, it is sometimes difficult to get them by ourselves because of the problem such as expense, equipment and/or time.
The reliance of the material properties used in the numerical analysis for the reliability assessment of high density packaging is studied, in this paper, especially focusing on the encapsulant.
The result of a numerical analysis with the material properties, that the material supplier announced, did not support the result of the actual hardware testing. On the research process, the material properties were focused, and then I actually measured the material properties with the piece of the actual hardware parts which were constructing this product. As the result, we found the order difference between the material suppliers announced data and our measured data.
With this established numerical model, the optimized parameter of the encapsulant has been studied.
