Switching to the metallurgical microscope in a top-down view, looking at a good bond first, we can see a rough textured surface on the gold contact pad, with the gold wire coming in from one side and compressed into a crescent shape by the ball-bonding capillary (hence why some sources refer to the second bond as a “crescent bond”). The gold wire and gold pad appear to be well connected, and a deep circular indentation is visible in the pad which goes through the gold into a silvery base metal.
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。业内人士推荐新收录的资料作为进阶阅读
2026-03-07 00:00:00:0金 歆 3014379710http://paper.people.com.cn/rmrb/pc/content/202603/07/content_30143797.htmlhttp://paper.people.com.cn/rmrb/pad/content/202603/07/content_30143797.html11921 法治护航“一张蓝图绘到底”。业内人士推荐新收录的资料作为进阶阅读
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