COIL DEVICE AND PRINTED WIRING BOARD
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United States of America Patent
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N/A
Issued Date -
Mar 27, 2025
app pub date -
Dec 23, 2022
filing date -
Dec 23, 2022
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A coil device has a first surface and a second surface as end surfaces of the coil device in a thickness direction. The coil device includes at least one printed wiring board, a first protective layer, and an external connection terminal. Each of the at least one printed wiring board has a first base film including a first main surface and a second main surface as a surface opposite to the first main surface, a first coil wire spirally formed on the first main surface, and a second coil wire spirally formed on the second main surface. The first protective layer covers the first main surface of one of the at least one printed wiring board disposed closest to the first surface. The external connection terminal is formed on the first protective layer, and is electrically connected to the first coil wire.
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