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公开(公告)号:US20180200820A1
公开(公告)日:2018-07-19
申请号:US15405740
申请日:2017-01-13
发明人: Eric WANG
CPC分类号: B23K3/0623 , B23K2101/40 , H01L24/75 , H01L2224/75755 , H05K3/3478 , H05K3/4015 , H05K2201/10734 , H05K2203/041
摘要: A guiding board for a ball placement machine has a board body. The board body has a top surface, a bottom surface, a ball-dropping area, and multiple guiding grooves. The ball-dropping area is defined on the top surface. The guiding grooves are defined in the ball-dropping area and are parallel to each other. Each guiding groove has a bottom and multiple ball-dropping holes defined in the bottom and extending through the bottom surface of the board body.