Ferrite and inductor

Details Ferrite and inductor Ferrite and inductor

1998-07-09

2000-03-07

Koslow, C. Melissa

Compositions

Magnetic

Iron-oxygen compound containing

336233, 252 6258, 252 6259, 252 626, 252 6263, 252 6264, H01F 134

Patent

active

060335947

ABSTRACT:
A ferrite which has a high initial permeability, excellent anti-stress properties and excellent temperature characteristic, obviates the use of lead, and is inexpensive, the ferrite being capable of materialize the narrow tolerance and high reliability of a resin mold type inductor without causing environmental pollution, the ferrite having a main component containing at least iron oxide and nickel oxide, an additive containing at least one of bismuth oxide, vanadium oxide, phosphorus oxide and boron oxide, a first auxiliary component containing silicon oxide and a second auxiliary component containing at least one of magnesium oxide, calcium oxide, barium oxide and strontium oxide, the content of the additive being 0.5 to 15 wt % based on the main component, the content of each auxiliary component being 0.1 to 10.0 wt % based on the main component, and a resin mold type inductor for which the above ferrite is applied.

REFERENCES:
patent: 4966625 (1990-10-01), Charles
patent: 5871662 (1999-02-01), Van Der Zaag et al.
Patent Abstracts of Japan, vol. 008, No. 243 (E-277), Nov. 8, 1984, JP 59-121806, Jul. 14, 1984.

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