| 摘要 |
PROBLEM TO BE SOLVED: To provide a common node noise filter capable of suppressing failure of external electrode formation and occurrence of mount defect.SOLUTION: First and second coil conductors 14 and 15 constituting a first coil 12 and third and fourth coil conductors 16 and 17 constituting a second coil 13 are alternately arranged, the first coil conductor 14 and the third coil conductor 16 are magnetically coupled to each other to form a first common mode filter portion 18, and the second coil conductor 15 and the fourth coil conductor 17 are magnetically coupled to each other to form a second common mode filter portion 19. The first common mode filter portion 18 and the second common mode filter portion 19 are connected in series, and a constraining layer or a metal layer 24 having a shrinkage factor smaller than that of an insulator layer is formed at least around the second and fourth coil conductors 15 and 17 or at the outside portion in the lamination direction of the second and fourth coil conductors 15 and 17.SELECTED DRAWING: Figure 4 |
