| 摘要 |
<p>A ferrite having low power losses, high DELTA B = Bm - Br at high frequency, and improved mu a-B properties is provided as well as a core for a power supply using the same. The ferrite contains 30-41 mol% of MnO, 6-16 mol% of ZnO, and the balance of Fe2O3 as main components and 50-250 ppm of SiO2, 200-1500 ppm of CaO, up to 4000 ppm of SnO2, up to 3000 ppm of TiO2, at least 300 ppm of SnO2 + TiO2, from more than 0 to 500 ppm of Nb2O5, and from more than 0 to 400 ppm of ZrO2 as subordinate components.</p> |
