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Silver bonding wire for BSOB(Bond-Stitch-on-Ball)/BBOS(Bonding-Ball-on-Stitch)

机译:BSOB(球上缝合线)/ BBOS(球上缝合线)用银焊线

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With gradually adopted silver alloy wire bonding in IC and LED Packaging, BSOB becomes a common practice for die stacking in IC packaging and Multi-die Serial Bonding in LED, BBOS is adopted only in LED field. This paper identify a kind of texture of silver alloy bonding wire via Electron Backscatter Diffraction (EBSD) analysis for more consistent BSOB/BBOS bonding with lower MTBA (Mean Time Between Assistant). the key factor is believed to be the anisotropy of the silver bonding wire. Fine tune in Silver alloy doping, adjustment of wire drawing and annealing parameters should be made to achieve this silver alloy bonding wire of high anisotropy nature.
机译:随着IC和LED封装中逐渐采用银合金引线键合,BSOB成为IC封装中的芯片堆叠和LED中的多管芯串行键合的常见惯例,BBOS仅在LED领域中采用。本文通过电子背散射衍射(EBSD)分析确定了一种银合金键合线的织构,以实现更一致的BSOB / BBOS键合和更低的MTBA(平均间隔时间)。关键因素被认为是银键合线的各向异性。应当对银合金掺杂进行微调,调整拉丝和退火参数,以实现具有高各向异性的银合金焊丝。

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