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논문 기본 정보

저자정보
(서울산업대학교) (서울산업대학교)
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한국생산제조학회 한국생산제조학회지 한국공작기계학회지 Vol.19 No.2
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    초록·키워드

    This paper describes the thermal fatigue life prediction models for 95.5Sn-4.0Ag-0.5Cu solder joints of Flip chip package considering Under Bump Metallurgy(UBM). A 3D Finite element slice model was used to simulate the viscoplastic behavior of the solder. For two types of solder bump pitches, simulations were analyzed and the effects of underfill packages were studied. Consequently, it was found out that solder joints with underfill had much better fatigue life than solder joints without underfill, and solder joints with 300㎛ bump pitch had a longer thermal fatigue life than solder joints with 150㎛ bump pitch. Through the simulations, flip chip with lead-free solder joints should be designed with underfill and a longer bump pitch.

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      UCI(KEPA) : I410-ECN-0101-2010-552-003380870