| 摘要 |
The invention provides a multilayer ceramic chip capacitor which satisfies X7R property or a temperature response of its capacitance and shows a minimal change of capacitance with time under a DC electric field, a long accelerated life of insulation resistance (IR) and good DC bias performance and also provides a multilayer ceramic chip capacitor which is resistant to dielectric breakdown in addition to the above advantages. <??>In a first form of the invention, dielectric layers contain BaTiO3 as a major component and MgO, Y2O3, at least one of BaO and CaO, and SiO2 as minor components in a specific proportion. In a second form, the dielectric layers further contain MnO and at least one of V2O5 and MoO3 as minor components in a specific proportion. <??>In the first form, the dielectric layer has a mean grain size of up to 0.45 mu m, and in an X-ray diffraction chart of the dielectric layer, a diffraction line of (200) plane and a diffraction line of (002) plane at least partially overlap one another to form a wide diffraction line which has a half-value width of up to 0.35 DEG . <IMAGE> |
