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PAPERS ON RELIABILITY

The Effect of Solder Paste Volume and Reflow Ambient Atmosphere on Reliability of CBGA Assemblies

[+] Author and Article Information
Y. P. Wu, P. L. Tu, Yan C. Chan

Department of Electronic Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong

J. Electron. Packag 123(3), 284-289 (Jul 07, 1999) (6 pages) doi:10.1115/1.1371782 History: Received July 07, 1999
Copyright © 2001 by ASME
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References

Figures

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The geometry specification of the CBGA specimen
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The temperature profile for the current reflow process
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Maximum shear force as a function of stencil thickness
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Maximum deformation as a function of stencil thickness
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SEM fracture section photomicrograph
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Cantilever bending fatigue test setup
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Bending fatigue life cycle as a function of the stencil thickness
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Thermal shock fatigue life as a function of the stencil thickness
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Vibration fatigue life as a function of the stencil thickness
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Photographs of the joints corresponding to the three stencil thickness
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An illustration of a CBGA solder joint
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Profile of cross section area, stress and strain distribution along x-axis
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A fracture section microphotograph of fatigue failure for specimen prepared using 0.10 mm stencil

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