Surface-mount type switching power-supply unit and mounting method for the same
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United States of America Patent
Stats
-
Apr 5, 2005
Grant Date -
Dec 19, 2002
app pub date -
Aug 1, 2002
filing date -
Apr 12, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A transformer of a switching power-supply circuit is placed and mounted nearly in the middle area of a circuit board. The transformer is of a low-profile type, and a broad and flat upper surface of the transformer functions as a suction surface for a suction nozzle. When a surface-mount type switching power-supply unit is mounted in a mother board, firstly, the upper surface of the above transformer is held by the suction nozzle, the surface-mount type switching power-supply unit is transferred to a target mounting area on the mother board by the suction nozzle, and the surface-mount type switching power-supply unit is surface mounted in the mother board. Because it is not required to provide a nozzle suction surface for the suction nozzle's exclusive use, transfer molding is not needed, and accordingly a low-profile and low-cost surface-mount type switching power-supply unit can be facilitated.
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