To provide a layered common-mode filter capable of reducing a magnetic flux loss and improving reliability.
In top parts where side parts of a first coil conductor 31 and a second coil conductor 34 cross each other, a circumferential length of an inner-edge corner part is made larger than that of an outer-edge corner part. Therefore, a space width between the top parts is made narrow so as to be closer to a space width between the side parts, thereby reducing a magnetic flux loss. Furthermore, if coil conductors are made thicker and its thickness becomes greater than a conductor width of the coil conductor, since a sheet can not be supported sufficiently during layering, conductor falling or crushing may occur but if the circumferential length of the inner-edge corner part is made greater than that of the outer-edge corner part to enlarge the width of the conductor in the top part, the sheet is surely supported during layering, thereby preventing the conductor from falling or crushing.
YOSHIDA KENTARO
HATTORI TAKUO
| JP2002033215A | 2002-01-31 | |||
| JP2009081231A | 2009-04-16 |
Yoshiki Kuroki
Takashi Mikami
Yasunori Ishizaka