| 摘要 |
A wirewound balun transformer for planar packaging comprising a flanged core which has end flanges at both ends, at least one center flange, and two or more winding recesses, a flat core held in parallel with the flanged core, and windings coiled around the winding recesses, characterized in that one side face of the center flange is not flush with but is formed behind the plane that connects one side faces on the same side of the end flanges, each of the end flanges of the flanged core has an opposing pair of electrodes formed on both side faces, and the center flange has a single electrode formed on the opposite side face.
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