Ferrite material, ferrite sintered body, and inductor

Details Ferrite material, ferrite sintered body, and inductor Ferrite material, ferrite sintered body, and inductor

2006-04-25

2006-04-25

Nguyen, Tuyen T (Department: 2832)

Inductor devices

Core

C252S062590

Reexamination Certificate

active

07034649

ABSTRACT:
A ferrite material having a high Q value and also having a small absolute value of αμir in a wide temperature range between −40° C. and 160° C.A ferrite material, which comprises, as main constituents, 45.5 to 48 mol % of Fe2O3, 5 to 10.5 mol % of CuO, 26 to 30 mol % of ZnO, and the balance substantially being NiO, and further comprises, as an additive, cobalt oxide within a range between 0.005 and 0.045 wt % in terms of CoO.The ferrite material of the present invention has properties such as each of the absolute value of αμir−40˜20and the absolute value of αμir20˜160of 3 ppm/° C. or less, and a Q value at 125 kHz of 170 or more.

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