BGA Jointing Property of Sn-8.8 mass%Zn and Sn-8.0 mass%Zn-3.0 mass%Bi Solder on Electroless Nickel-Phosphorus/Immersion Gold Plated Substrates
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- Sugizaki Takashi
- Research & Development department, Meltex Incorporation Department of Applied Chemistry, Graduate School of Engineering Tokyo Metropolitan University
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- Nakao Hidehiro
- Research & Development department, Meltex Incorporation
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- Kimura Takashi
- Material Analysis Station, National Institute for Materials Science
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- Watanabe Tohru
- Department of Applied Chemistry, Graduate School of Engineering Tokyo Metropolitan University
書誌事項
- タイトル別名
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- BGA Jointing Property of Sn 8 8 massパーセントZn and Sn 8 0 massパーセントZn 3 0 massパーセントBi Solder on Electroless Nickel Phosphorus Immersion Gold Plated Substrates
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The BGA jointing properties including the joint strength and the interfacial structure have been investigated in detail between the lead-free solders containing Sn–8.8Zn and Sn–8.0Zn–3.0Bi with low melting temperature and the immersion gold plated film on the electroless nickel-phosphorus deposits. The results indicate that both Sn–8.8Zn and Sn–8.0Zn–3.0Bi solders can be readily jointed with the substrate in the same way as the conventional Sn–37Pb solder at the peak temperature of 230°C. The joint strength of Sn–8.8Zn solder is higher than that of Sn–8.0Zn–3.0Bi solder, and both of them are higher than that of Sn–37Pb under same surface finishing. Moreover, γ2(AuZn3) intermetallic compound occurs as the reaction layer at Sn–8.8Zn and Sn–8.0Zn–3.0Bi joints, and the bismuth crystals occur at Sn–8.0Zn–3.0Bi joint. The hot bump pull testing results clearly show that the fracture of solder ball occurs along the reaction layer of γ2(AuZn3) intermetallic compound since this reaction layer or bismuth crystals in the joint causes the decrease of joint strength.
収録刊行物
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 44 (9), 1790-1796, 2003
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390282679224476032
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- NII論文ID
- 130004452264
- 10011914783
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- NII書誌ID
- AA1151294X
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- COI
- 1:CAS:528:DC%2BD3sXos1Gltrs%3D
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- ISSN
- 13475320
- 13459678
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- NDL書誌ID
- 6691925
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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