Abstract
An innovative Ag-8Au-3Pd bonding wire with a high twin density has been produced. The grain size of this annealing-twinned wire changes moderately during electrical stressing, unlike that of the conventional grained wire, which increases drastically and even leads to a bamboo structure. In addition, the durability against electromigration of the annealing-twinned Ag-8Au-3Pd alloy wire is higher than that of the conventional grained wire. This higher durability can be ascribed to the surface reconstruction of a stepwise morphology and slow grain growth resulting from the abundance of annealing twins in this wire.
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Chuang, TH., Wang, HC., Chuang, CH. et al. Effect of Annealing Twins on Electromigration in Ag-8Au-3Pd Bonding Wires. J. Electron. Mater. 42, 545–551 (2013). https://doi.org/10.1007/s11664-012-2381-2
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DOI: https://doi.org/10.1007/s11664-012-2381-2