COMMON MODE NOISE FILTER

摘要

PROBLEM TO BE SOLVED: To provide a high reliable ceramic laminated component by preventing migration of silver.SOLUTION: The ceramic laminated component includes: a glass ceramic layer 20 containing borosilicate glass as major component; and two planar coils 23A and 23B embedded in the glass ceramic layer. The glass ceramic layer is not laminated over any of ferrite magnetic layers 21A or 21B. The glass ceramic layer includes minute regions of 5 μm or less where aluminum and silver coexist being adhered to each other.