| 摘要 |
A wound type common mode choke coil resulting in a tip shape finished product is provided, having a good appearance, high reliability, and excellent common mode characteristics, by reducing the profile of the common mode component. This wound type common mode choke coil has a magnetic core with square collar portions at both ends of a winding core, grooves in the square collars, first electrodes, a pair of coil conductors wound around the winding core portion connected conductively to the first electrode layers of the collar portions, a non-magnetic first insulation coating layer coating the outer circumference of the magnetic core, a second insulation coating layer containing magnetic power armor-coated to the whole outer circumference of the common mode choke coil, and second electrode layers coating from the groove portions over the first electrode layers. The groove portions prevent the excess resin produced during the sealing from flowing over and degrading other elements of the device by allowing drainage therethrough.
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