| 摘要 |
An impedance element having a longitudinal current path surrounded by ferromagnetic material is implemented by the combination of a single rectangular ferrite chip, some through holes provided through said chip, through hole conductors plated on surface of said through holes, a pair of terminal conductors plated at ends of said chip, a surface conductive pattern deposited on front and back surfaces of said ferrite chip so that said through hole conductors are connected in series to one another between said terminal conductors, and insulation layers covering said surface conductors and said through hole conductors on both front and back surfaces of said ferrite chip. The present impedance element is small in size with relatively large impedance, and is applicable for instance to a high frequency noise filter. |
