Capacitor and dielectric ceramic powder based upon a barium borate and zinc silicate dual-component sintering flux

摘要

Temperature compensating capacitors and dielectric ceramic powder compositions therefor are disclosed, based upon a dual-component barium borate and zinc silicate sintering flux. The precursor dielectric ceramic powders can include (1−m) BaTiO₃+(m) CaZrO₃ (BTCZ composition), with m ranging from 20 mole percent to 35 mole percent, xBaO.yTiO₂.zRE₂O₃ (rare earth composition), (RE being a rare earth metal), with x ranging from 0 m % to 30 m %, y ranging from 45 m % to 95 m %, and z ranging from 5 m % to 50 m %, or a combination of the BTCZ and rare earth composition in varying weight percents. The effective range of B₂O₃ in the barium borate ranges from 0.029 w % to 2.75 w % of the total dielectric composition, whereas the effective range of SiO₂ in the zinc silicate ranges from 0.08 w % to 1.42 w % of the total dielectric composition.