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The quality of solder joint has a direct effect on the reliability of products, while the detection of solder joint defects plays an important part in the inspection of solder joint quality. So scientific methods should be selected to achieve the intelligent detection of solder joint defects. In this paper, a forward neural network with BP learning algorithm is introduced according to the relationship...
Aiming at solder ball diameter, solder ball height, solder ball distance and welding plate thickness these four factors of Lead-free solder ball in plastic micro ball grid array devices, this paper uses the analysis method of the combination of the finite element analogy and response method, to analysis thermal fatigue life of lead-free solder ball in plastic micro ball grid array device. Based on...
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