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contributor authorYutaka Tsukada
contributor authorMasao Sakane
contributor authorMasateru Ohnami
contributor authorHideo Nishimura
date accessioned2017-05-09T00:02:11Z
date available2017-05-09T00:02:11Z
date copyrightSeptember, 2000
date issued2000
identifier issn1528-9044
identifier otherJEPAE4-26184#207_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/123537
description abstractThis paper describes the life assessment of flip chip joints. Flip chip joints of 63Sn-37Pb and 5Sn-95Pb solders on a printed circuit board were stressed thermally for fatigue. Fatigue lives of the joints were determined by an electrical potential drop method and the effect of encapsulation on fatigue life was discussed. The encapsulation had a significant effect of prolonging the fatigue life of the joints. Thermo-mechanical finite element analyses proved that the encapsulation lowered the strain amplitude of the joints by distributing the strain over a whole package and bending effect. Cracking location was also discussed in relation with the strain concentration in the joints. Fatigue lives of the flip chip joints were compared with those of bulk round bar specimens and the difference in fatigue life between two types of specimens was discussed from the specimen dimensions and ratchet effect. [S1043-7398(00)00203-6]
publisherThe American Society of Mechanical Engineers (ASME)
titleFatigue Life Analysis of Solder Joints in Flip Chip Bonding
typeJournal Paper
journal volume122
journal issue3
journal titleJournal of Electronic Packaging
identifier doi10.1115/1.1286002
journal fristpage207
journal lastpage213
identifier eissn1043-7398
keywordsSolders
keywordsBonding
keywordsElectrical resistance
keywordsFatigue life
keywordsFinite element model
keywordsSolder joints
keywordsFlip-chip
keywordsFinite element methods
keywordsFatigue
keywordsStress
keywordsFracture (Process)
keywordsDrops
keywordsDimensions
keywordsElectric potential
keywordsTemperature AND Cycles
treeJournal of Electronic Packaging:;2000:;volume( 122 ):;issue: 003
contenttypeFulltext


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