Electricity: electrical systems and devices – Miscellaneous
Patent
1989-06-30
1990-08-14
Thompson, Gregory D.
Electricity: electrical systems and devices
Miscellaneous
357 65, 357 68, 361400, 361405, H01R 900
Patent
active
049492233
ABSTRACT:
The present invention is drawn to an electronic component in the form of a packaged semiconductor device or the like, and an electronic apparatus using the same, in which protrusions having a semicircular cross section are formed along the sides of the lower surface of the package, leads of the component include a first curved portion conformed to the contour of a protrusion, a second curved portion conformed to the lower surface of the first curved portion and a linking portion coupling the first and second curved portions. The leads project from the side of the package, and the lower surface of the second curved portion is soldered to the wiring pattern on a printed circuit board. With this structure, if the electronic component becomes defective, the package can be lifted from the surface of the printed circuit board by stretching the external leads, and the solder can be removed very easily. Accordingly, even if multiple electronic components are densely mounted on the printed circuit board, an individual defective electronic component can be easily replaced.
REFERENCES:
patent: 4482781 (1984-11-01), Burns
patent: 4673967 (1987-06-01), Hingorany
patent: 4827611 (1989-05-01), Pai et al.
Matsushita Electronics Corporation
Thompson Gregory D.
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