Experimental study on CBGA assembly in various environmental temperatures using moire interferometry

W. N. Wang; Y. P. Yang; Xiu-Mei Wen; X. L. Jiang; Fulong Dai

doi:10.1117/12.468758

29 May 2002 Experimental study on CBGA assembly in various environmental temperatures using moire interferometry

W. N. Wang, Y. P. Yang, Xiu-Mei Wen, X. L. Jiang, Fulong Dai

Proceedings Volume 4537, Third International Conference on Experimental Mechanics; (2002) https://doi.org/10.1117/12.468758
Event: Third International Conference on Experimental Mechanics, 2002, Beijing, China

Abstract

Solder joints between a ceramic ball grid array (CBGA) and a printed circuit board (PCB) generally suffer important thermal strains and stresses during the operation of devices as well as under temperature variations. Mainly, these tend to increase the thermal stress concentration in solder joints. In this study, moire interferometry is used to measure the power-induced thermal displacement in the CBGA assembly. The experimental study is performed under various environmental temperatures using different power levels. Two types of thermal strain distributions are found in the assembly, depending on the thermal loadings. The stress concentrations are located in the CBGA assembly. Then, based on the relative displacement between the CBGA and the PCB, the shear stress on the solder ball is determined. Moreover, the effects of different thermal loadings on the CBGA as well as their impact on the reliability of CBGA solder balls are discussed in details.

Citation Download Citation

W. N. Wang, Y. P. Yang, Xiu-Mei Wen, X. L. Jiang, and Fulong Dai "Experimental study on CBGA assembly in various environmental temperatures using moire interferometry", Proc. SPIE 4537, Third International Conference on Experimental Mechanics, (29 May 2002); https://doi.org/10.1117/12.468758

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available