| 摘要 |
PURPOSE: A ferrite core filter is provided to arrange the ferrite core filter having a lead hole of a minimum unit and to use by connecting the ferrite core filter suited for the number of pins in an integrated circuit. CONSTITUTION: A ferrite core filter for four pins has two lead holes(202) each in both edges of the ferrite core filter(200) to be able to insert a lead line of an integrated circuit. The ferrite core has a V-shaped groove(204) in the lower side of a body of ferrite core filter(200), and a V-shaped projected portion in the upper part. A central point of the lead hole(202) neighbored upon the lower side arranged the V-shaped groove(204) of the ferrite core filter body(200). A length(0.5d) of the upper part arranged in the V-shaped groove(204) of the ferrite core filter body(200) is the same with a central point of the lead hole(202) neighbored upon the upper part of the V-shaped protruded portion(206) and a length(0.5d) of the upper part arranged the V-shaped protruded portion(206). Each length has a length corresponding to a half of an interval(d) between lead lines in one side of the integrated circuit. |
