| 摘要 |
PROBLEM TO BE SOLVED: To provide a multilayered inductor that can obtain a sufficient gap dispersion number even when the number of turns is small, and reduce eddy current loss in a coil pattern nearby a gap and has a small DC resistance thereby has superior low loss characteristics. SOLUTION: A plurality of coil layers (three layers 5, 6 and 7 in Fig. 1) each constituted by forming a nearly one-turn coil pattern 3 made of Ag and a magnetic gap layer 4 made of zirconia (ZrO<SB>2</SB>) on a magnetic body 2 made of NiZn ferrite are stacked through via holes 8 and connected in series. A three-turn multilayer inductor 10 is constituted having a configuration such that coil layers 9 and 11 having nearly the same constitution with upper and lower coil layers 5 and 7 of the stack are connected in parallel through via holes 12 respectively and stacked, and a plurality of plain magnetic body layers 13 with only magnetic bodies 2 made of, for example, NiZn ferrite are stacked while neither a coil pattern 3 nor a magnetic gap 4 is formed above and below the stack. COPYRIGHT: (C)2009,JPO&INPIT
|
