| US 7,449,986 B2 | ||
| Planar coil component, method for winding end connection thereof and resonance transformer | ||
| Kenichi Yamaguchi, Tokyo (Japan); Masaaki Iwakura, Tokyo (Japan); and Toru Kuramochi, Tokyo (Japan) | ||
| Assigned to TDK Corporation, Tokyo (Japan) | ||
| Filed on Oct. 17, 2007, as Appl. No. 11/873,714. | ||
| Claims priority of application No. 2006-293071 (JP), filed on Oct. 27, 2006. | ||
| Prior Publication US 2008/0100407 A1, May 01, 2008 | ||
| Int. Cl. H01F 27/29 (2006.01) | ||
| U.S. Cl. 336—192 [336/208; 336/198] | 18 Claims |
| 1. A planar coil component comprising:
a plurality of terminal metal fittings that include a crimping part, a terminal part and a junction; and
a bobbin on which a winding is wound, the bobbin having a terminal board including a plurality of insertion holes, wherein:
the terminal part is inserted in the insertion hole(s) with the junction exposed, and the terminal part projects from a bottom
surface of the terminal board,
each end of the winding is located in the crimping part, passing through a slot in the bottom surface of the terminal board,
and is crimped, and
the winding is selected from the group consisting of a litz wire, a stranded wire, and a parallel wire, and is welded at an
end tip and connected to the terminal metal fitting.
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