发明授权
US5311405A Method and apparatus for aligning and attaching a surface mount component
失效
用于对准和附接表面安装部件的方法和装置
- 专利标题: Method and apparatus for aligning and attaching a surface mount component
- 专利标题(中): 用于对准和附接表面安装部件的方法和装置
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申请号: US100834申请日: 1993-08-02
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公开(公告)号: US5311405A公开(公告)日: 1994-05-10
- 发明人: David A. Tribbey , Henry F. Liebman , Allen D. Hertz , Peter E. Albertson
- 申请人: David A. Tribbey , Henry F. Liebman , Allen D. Hertz , Peter E. Albertson
- 申请人地址: IL Schaumburg
- 专利权人: Motorola, Inc.
- 当前专利权人: Motorola, Inc.
- 当前专利权人地址: IL Schaumburg
- 主分类号: B23K1/00
- IPC分类号: B23K1/00 ; H05K1/11 ; H05K3/34 ; H05K13/04 ; H05K7/10
摘要:
A method and an apparatus align and attach a leadless surface mount component (402) including a termination at each end of the component (402). The termination has bottom (704) and end (702) portions for attaching to a corresponding pad on a substrate (102) by a reflow solder process (1200). A pad arrangement (100) is formed including two opposite pads (108), each pad (108) occupying a tri-oval-shaped area. The tri-oval-shaped area includes an elliptical area (110) substantially centered under the bottom portion (704) of the corresponding termination of the component (402) when the component (402) is aligned with the pad arrangement (100), and an arcuate area (112) contiguous with the elliptical area (110) and extending towards the opposite pad (108) in a central lengthwise direction. A solder paste (202) is applied to the elliptical area (110), and thereafter reflowed, whereby solder (302) in the solder paste (202) liquefies and flows onto the arcuate area (112), thereby facilitating alignment of the component (402) with the pad arrangement (100).
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