发明授权
US6125043A Circuit board arrangement with accurately positioned components mounted
thereon
失效
具有安装在其上的精确定位部件的电路板布置
- 专利标题: Circuit board arrangement with accurately positioned components mounted thereon
- 专利标题(中): 具有安装在其上的精确定位部件的电路板布置
-
申请号: US153796申请日: 1998-09-15
-
公开(公告)号: US6125043A公开(公告)日: 2000-09-26
- 发明人: Heiner Hauer , Albrecht Kuke , Eberhard Moess , Werner Scholz
- 申请人: Heiner Hauer , Albrecht Kuke , Eberhard Moess , Werner Scholz
- 申请人地址: DEX Stuttgart
- 专利权人: Robert Bosch GmbH
- 当前专利权人: Robert Bosch GmbH
- 当前专利权人地址: DEX Stuttgart
- 优先权: DEX19750073 19971112
- 主分类号: H01L21/60
- IPC分类号: H01L21/60 ; H01L23/13 ; H05K3/34 ; H01L23/498
摘要:
The circuit board (1) has a component (101) mounted on it by means of a soldering process which causes an automatic, passive alignment of the component (101) due to the surface tension in a melted piece of solder which electrically connects two pads (2, 102), one (102) of which is on the component and the other (2) of which is on the circuit board. Stand-offs (20) are used to provide a suitable spacing or distance between the component (101) and the circuit board (1). The other pad (2) has a surface that is divided into a central part (3) and an edge part (4), both wettable by the solder. The second or edge part (4) is shaped like a ring and surrounds the central part and is composed so that it is more slowly wettable by the solder than the central part. The spacing established by the stand-offs is dimensioned so that a melted piece of the solder between the pads produces a force drawing the component (101) toward the circuit board (1) because of surface tension in the melted solder.
公开/授权文献
- US5604202A Use of NGF growth factors to treat drug-induced neuropathy 公开/授权日:1997-02-18
信息查询
IPC分类: