New type of yield from CXM3651XR lotC56V after the Test FC found that fail Test no. 7011, 1011, we analyzed NG work found that the problem is BNSOP, which is caused by a Bump ball did WB pad Process. We have the disposition as follows: divided into 4 groups. Group 1, which is a group that we come across a problem, we at test Match with tray. I found that most of the jobs that fail would be scattered in the tray that is 40-45, we judge the work tray. The X-ray if problems are found, NG BNSOP Reject IC if the X-ray through, bringing jobs to TC 10Cyc., if a test has passed, release the rest of the Group.Group 2, led X-ray and rolls if the TC Group 1 through, they can leave.
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