| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a common mode choke coil in which migration between conductor coils is prevented effectively, and both the increase in wiring resistance of the conductor coil and the decrease in specific resistance of a magnetic layer are prevented effectively. <P>SOLUTION: In a common mode choke coil (10) where a nonmagnetic layer and a second magnetic layer are laminated on a first nonmagnetic layer, and two conductor coils facing each other are included in the nonmagnetic layer, the nonmagnetic layer (3) is composed of sintered glass ceramic, the conductor coils (2, 4) are composed of a conductor containing copper, and at least one of the first magnetic layer (1) and second magnetic layer (5) is composed of a sintered ferrite material containing Fe, Mn, Ni, Zn, and Cu. In the sintered ferrite material, the CuO-converted content of Cu is 5 mol% or less, the Fe<SB POS="POST">2</SB>O<SB POS="POST">3</SB>-converted content of Fe is 25-47 mol%, the Mn<SB POS="POST">2</SB>O<SB POS="POST">3</SB>-converted content of Mn is 1-7.5 mol%, or the Fe<SB POS="POST">2</SB>O<SB POS="POST">3</SB>-converted content of Fe is 35-45 mol% and the Mn<SB POS="POST">2</SB>O<SB POS="POST">3</SB>-converted content of Mn is 7.5-10 mol%. <P>COPYRIGHT: (C)2013,JPO&INPIT |
