TY - GEN
T1 - Effect of Fatigue Crack Network in Die-attach Joints on Thermal Resistance
AU - Ochi, Koki
AU - Yokoyama, Yoshinori
AU - Hanada, Ryuichiro
AU - Izuo, Shinichi
AU - Nishikawa, Kazuyasu
AU - Kanai, Hiroki
AU - Abe, Yoshiki
AU - Kariya, Yoshiharu
N1 - Publisher Copyright:
© VDE VERLAG GMBH · Berlin · Offenbach.
PY - 2022
Y1 - 2022
N2 - We evaluated the effect of fatigue crack networks in die-attach joints on the thermal resistance Rtℎ and found singular rise of Rtℎ in the final phase of fatigue crack networks formation. Structure of samples was Si/Solder/Si joints, and Sn-based lead-free solder alloys were used for the die-attach materials. We conducted thermal cycling tests and measured Rtℎ, vertical crack density and thickness of die-attach joints before/after the tests. Then, we calculated rise of Rtℎ due to vertical cracks and found that increase of measured Rtℎ became twice larger than calculated one in the final phase of fatigue crack networks formation.
AB - We evaluated the effect of fatigue crack networks in die-attach joints on the thermal resistance Rtℎ and found singular rise of Rtℎ in the final phase of fatigue crack networks formation. Structure of samples was Si/Solder/Si joints, and Sn-based lead-free solder alloys were used for the die-attach materials. We conducted thermal cycling tests and measured Rtℎ, vertical crack density and thickness of die-attach joints before/after the tests. Then, we calculated rise of Rtℎ due to vertical cracks and found that increase of measured Rtℎ became twice larger than calculated one in the final phase of fatigue crack networks formation.
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M3 - Conference contribution
AN - SCOPUS:85145654307
T3 - PCIM Asia 2022 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, Proceedings
SP - 116
EP - 120
BT - PCIM Asia 2022 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, Proceedings
PB - VDE Verlag GmbH
T2 - 2022 International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, PCIM Asia 2022
Y2 - 26 October 2022 through 27 October 2022
ER -