Surface mount type power inductor
OwnerJae Young Shin, Byung Moo Song +1inventors
InventorsJae Young Shin, Byung Moo Song, Sang Kyung Lee
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Abstract
Disclosed herein is a surface mount type power inductor which has an outer magnetic capsule integrated with a coil-wound inner core, and which thus has no air gap between the outer magnetic capsule and the inner core, and can maintain a large inductance L in a high current condition. In the inductor, a coil is wound a predetermined number of turns around the inner core formed from ferrite or magnetic metal. An outer magnetic capsule, molded from a magnetic powder, an insulation filler, a binder, and a lubricant, is provided to cover the inner core and the coil.
Claims1
A surface mount type power inductor, comprising:
- an inner core, made from ferrite or magnetic metal, having a form selected from among an I type, a T type or a drum type,
- a coil wound a predetermined number of turns around the inner core,
- external electrodes communicating respectively with opposite ends of the coil, and
- an external magnetic capsule, formed from a magnetic powder, an insulation filler, a binder, and a lubricant through a molding process, covering the inner core and the coil, said magnetic powder being selected from a group consisting of iron powder, permalloy powder, sendust powder, amorphous alloy powder, and ferrite powder.
Dependencies are inferred from the claim text.