The Influence of Size and Composition on the Creep of SnAgCu Solder Joints

作者: S. Wiese , M. Roellig , M. Mueller , S. Rzepka , K. Nocke

DOI: 10.1109/ESTC.2006.280120

关键词:

摘要: The paper presents creep data, that was gained on non eutectic SnAgCu-solder specimens with a variety of compositions. SnAgCu-alloys were tested in different specimen sizes: bulk specimens, FBGA solder balls, flip chip joints. results the experiments show both alloy composition and joint size have significant influence properties material. Bulk rectangular cross section 4mm times 3mm contained following alloys: Sn98Ag2, Sn97Ag3, Sn96Ag4, Sn97.5Ag2Cu0.5, Sn97.1Ag2Cu0.9, Sn98.8Ag2Cu1.2, Sn96.5Ag3Cu0.5, Sn96.1Ag3Cu0.9, Sn95.8Ag3Cul.2, Sn96.9Ag3Au0.1. balls three noneutectic alloys content 0.5% < Ag 4% 0.2% Cu 0.8%. Flip joints Sn96.5Ag3.5 an non-eutectic SnAg 3%. Creep been carried out temperature range between T = 5degC ... 150degC. microstructures various analysed to understand their differences behavior

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