JPH08208325A - Dielectric porcelain composition and laminated ceramic capacitor using same - Google Patents

Abstract

PURPOSE: To obtain a dielectric porcelain compsn. having a high dielectric const., small dependence of the dielectric const. on temp. and voltage, and high dielectric breakdown voltage although the grain size is small, and to obtain a laminated ceramic capacitor using this compsn. CONSTITUTION: This dielectric porcelain compsn. contains 83.3-96.7mol% BaTiO3 containing <=0.03wt.% alkali metal oxide as impurity, and total 1.4-5.0mol% of at least one of lanthanum oxide, cerium oxide, neodymium oxide, praseodymium oxide and samarium oxide in terms of LaO3/2 , CeO2 , NdO3/2 , PrO11/6 and SmO3/2 , respectively, and 0.5-6.7mol% of CaZrO3 and CaSnO3 in terms of Ca(Zr1-x Snx )O3 , wherein 0<x<=1.0, and 1.4-5.0mol% of TiO2 .

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dielectric ceramic composition and a laminated ceramic capacitor using the same.

[0002]

2. Description of the Related Art Heretofore, many dielectric ceramic compositions mainly composed of BaTiO ₃ have been known for use in ceramic capacitors. BaTiO ₃ is 120
It has a Curie point near ℃ and 10,000 near that temperature.
Although it has a high dielectric constant, it is low at room temperature. Therefore, a material called a shifter material is added to move the Curie point to room temperature so that a high dielectric constant can be obtained at room temperature. As the shifter material, Sn oxide, Zr oxide, rare earth oxide, etc. are known.

BaTi using such a shifter material
As a ceramic capacitor mainly composed of O ₃ , a single plate type with lead wire has been manufactured. However, in recent years, the lamination technology has advanced, and it has become possible to easily obtain a dielectric green sheet having a thickness of about 30 to 80 μm. Then, so-called multilayer ceramic capacitors in which a plurality of layers are laminated by sandwiching a dielectric thin film between internal electrodes have entered the electronics industry, and conventional dielectric ceramic compositions are also used as materials for such multilayer ceramic capacitors. became.

On the other hand, recent ceramic capacitors tend to be miniaturized, and particularly in laminated ceramic capacitors, the thickness of the porcelain dielectric layer tends to be as thin as 6 to 10 μm. In this case, 100-10,000μ
Compared to a single-plate type capacitor having a thickness of m, it receives electric field strength ten times or more. Therefore, there is a demand for a composition having a smaller voltage dependency than a single plate capacitor.

Further, as the thickness of the dielectric layer becomes thinner, the characteristics are more likely to be affected by structural defects in the ceramic, so that the crystal grain size (grain size) is uniform and fine, and the pores are Is desired to be small and small.

Examples of the dielectric ceramic composition mainly composed of BaTiO _{3 and} having a small grain size include, for example, Japanese Patent Application Nos. 56-18059 and 57-16809,
Japanese Patent Application No. 57-105919, Japanese Patent Application No. 57-196469
No., etc. These are BaTiO ₃ and C
The grain size of BaTiO ₃ is reduced by adding eO ₂ , CeO ₂ and BaZrO ₃ or Nd ₂ O ₅ .

[0007]

However, the conventional dielectric ceramics with a small grain size have a maximum dielectric constant of about 10,000 at room temperature, which is lower than that of a large grain size, and the size of the multilayer capacitor can be reduced. In that case, it was difficult to obtain a large capacitance.

Further, there is a problem that the change in the dielectric constant with temperature is sharp, and if an additive is added to improve the change, the dielectric constant is lowered to around 7,000 at room temperature.

Therefore, an object of the present invention is to provide a dielectric ceramic composition having a high dielectric constant even though the grain size is small, the temperature and voltage dependence of the dielectric constant being small, and the dielectric breakdown voltage being high. And to provide a laminated ceramic capacitor using the same.

[0010]

In order to achieve the above object, the dielectric ceramic composition of the present invention has a BaT content of 0.03% by weight or less of an alkali metal oxide as an impurity.
At least 1 selected from lanthanum oxide, cerium oxide, neodymium oxide, praseodymium oxide, and samarium oxide with respect to iO ₃ 83.3 to 96.7 mol%.
The types are LaO _3/2 , CeO ₂ , NdO _3/2 , and P, respectively.
Converted to rO _11/6 and SmO _3/2 , total 1.4-
5.0 mol%, CaZrO ₃ and CaSnO ₃ Ca
(Zr _1-x Sn _x ) O ₃ (provided that 0 <x ≦ 1.0) is 0.5 to 6.7 mol%, and TiO ₂ is 1.
4 to 5.0 mol% is contained.

Further, BaTiO ₃ 83.3 containing less than 0.03% by weight of an alkali metal oxide as an impurity.
To 96.7 mol%, at least one selected from lanthanum oxide, cerium oxide, neodymium oxide, praseodymium oxide and samarium oxide is LaO _3/2 , CeO ₂ , NdO _3/2 , PrO _{11 /. 6} and SmO _3/2 converted to a total of 1.4 to 5.0 mol%, C
AZrO ₃ a and _{CaSnO 3 Ca (Zr 1-x} Sn x)
Converted to O ₃ (however, 0 <x ≦ 1.0) 0.5 to
6.7 mol% and TiO ₂ 1.4-5.0 mol%
100 parts by weight of the main component contained, BaO-SrO-C
auxiliary component composed of aO-Li ₂ O-SiO ₂ glass whose main component is composed of a 0.3 to 2.5 parts by weight.

Further, the monolithic ceramic capacitor of the present invention comprises a plurality of dielectric ceramic layers, a plurality of internal electrodes arranged via the dielectric ceramic layers, and an external electrode connected to the internal electrodes. In the ceramic capacitor, the dielectric ceramic layer contains lanthanum oxide, cerium oxide, and BaTiO _{3 of} 83.3 to 96.7 mol% in which the content of alkali metal oxides as impurities is 0.03 wt% or less. At least one selected from neodymium oxide, praseodymium oxide, and samarium oxide is LaO _3/2 , CeO ₂ , and NdO, respectively.
_3/2 , PrO _11/6 and SmO _3/2 are converted to 1.4 to 5.0 mol% in total, CaZrO ₃ and CaSnO ₃ being Ca (Zr _1-x Sn _x ) O ₃ (however, 0 <x ≦ 1.
0 to 0.5-6.7 mol% and TiO ₂
Is contained in a dielectric material containing 1.4 to 5.0 mol%, and the internal electrode is composed mainly of palladium.

Further, in the laminated ceramic capacitor comprising a plurality of dielectric ceramic layers, a plurality of internal electrodes arranged via the dielectric ceramic layers, and external electrodes connected to the internal electrodes, the dielectric The ceramic layer has an alkali metal oxide content of 0.
With respect to BaTiO ₃ 83.3 to 96.7 mol% of 03 wt% or less, at least one selected from lanthanum oxide, cerium oxide, neodymium oxide, praseodymium oxide, and samarium oxide is LaO _3/2 and C, respectively.
eO ₂ , NdO _3/2 , PrO _11/6 and SmO _3/2 in total 1.4-5.0 mol%, CaZrO ₃ and C
aSnO ₃ and Ca (Zr _1-x Sn _x ) O ₃ (where
0 <x ≦ 1.0), 0.5 to 6.7 mol%, and 100 parts by weight of the main component containing 1.4 to 5.0 mol% of TiO ₂ , and BaO—SrO—CaO. -Li ₂ O-
The glass containing SiO ₂ as a main component has a subcomponent of 0.3.
˜2.5 parts by weight, and the internal electrodes are mainly composed of palladium.

[0014]

【Example】

Example 1 First, a BaTiO ₃ raw material powder was prepared.
That is, using BaCO ₃ and TiO ₂ of various purities,
The molar ratio of BaCO ₃ and TiO ₂ is 1.000.
Were weighed, and wet mixed for 16 hours by a ball mill using zirconia boulders, and then evaporated to dryness to obtain a mixed powder. The obtained mixed powder was calcined in a natural atmosphere at 1150 ° C. for 2 hours, and then ground again with a ball mill until the average particle size became 2 μm or less. In this way, 4 with different purities shown in A, B, C and D of Table 1
A type of BaTiO ₃ was obtained.

[0015]

[Table 1]

Next, this BaTiO ₃ and La ₂ O ₃ ,
CeO ₂ , Pr ₆ O ₁₁ , Nd ₂ O ₃ , Sm ₂ O ₃ , Ca
ZrO ₃ , CaSnO ₃ , and TiO ₂ are added to La ₂ O ₃ ,
_{Pr 6 O 11, Nd 2 O} 3, Sm 2 O 3 , respectively LaO _3/2 for, NdO _3/2, PrO _11/6, in terms of SmO _3/2, so that a composition ratio shown in Table 2 Was weighed. After that, vinyl acetate resin binder was added to these weighed materials and wet-mixed for 16 hours, then dried and granulated to 2000 kg.
A disk having a diameter of 10 mm and a thickness of 0.6 mm was formed at a pressure of / cm ² . Then, the disc was fired at the temperature shown in Table 3 for 2 hours to obtain a disc-shaped porcelain.

Thereafter, the surface of this porcelain was observed at 2000 times with an electron microscope to measure the grain size.

Next, silver electrodes were baked on both sides of the obtained porcelain to obtain a measurement sample (capacitor). Then, the dielectric constant (ε), the dielectric loss (tan δ), the temperature change rate of the capacitance, the dielectric loss (tan δ) when an AC voltage was applied, the specific resistance and the dielectric breakdown voltage were obtained.

In this case, the dielectric constant and the dielectric loss are 2
The measurement was performed under the conditions of 5 ° C., 1 kHz, and 1 Vrms. As for the rate of change in capacitance with temperature, the rate of change in capacitance (ΔC / C ₂₀ ) at −25 ° C. and 85 ° C. based on the capacitance at 20 ° C. was obtained. Furthermore, the dielectric loss when applying an AC voltage is 100 V / mm, 1 k at a temperature of 25 ° C.
An AC voltage of Hz was applied to measure the dielectric loss. Also,
The specific resistance was obtained by applying a DC voltage of 100 V for 2 minutes at 25 ° C. and 125 ° C. and measuring the insulation resistance.
The breakdown voltage is AC at a boosting rate of 100 V / sec.
Voltage or DC voltage was applied, and the breakdown voltage at each of DC voltage and AC voltage was measured. The results of these measurements are shown in Table 3.

Example 2 First, in the same manner as in Example 1, four types of BaTiO ₃ having different purities shown in A, B, C and D of Table 1 were prepared.

Next, as a low temperature sintering agent, the composition is 8BaO.
_{-6SrO-6CaO-30Li 2 O-} 50SiO
An oxide glass represented by ₂ (mol%) was prepared. That is, as a starting material, industrial raw materials such as BaCO ₃ and S
rCO ₃ , CaCO ₃ , Li ₂ O and SiO ₂ were prepared. Next, these starting materials were weighed so as to have the composition of the above oxide glass, wet mixed and pulverized by a ball mill for 16 hours, and then evaporated and dried to obtain a mixed powder. Then, the obtained mixed powder was put in an alumina crucible and left at a temperature of 1300 ° C. for 1 hour, and then rapidly cooled to vitrify. Then, this glass was crushed so as to pass through a 200-mesh sieve to obtain glass powder.

Next, the previously prepared BaTiO ₃ and La were prepared.
₂ O ₃ , CeO ₂ , Pr ₆ O ₁₁ , Nd ₂ O ₃ , Sm ₂ O
₃ , CaZrO ₃ , CaSnO ₃ , and TiO ₂ are added to La
_{2 O 3, Pr 6 O 11} , Nd 2 O 3, Sm 2 O 3 , respectively LaO _3/2 for, NdO _3/2, PrO _11/6, Sm
Converted to O _3/2 , weighed so as to have the composition ratio shown in Table 4 as a main component, and the glass previously prepared was also weighed and added to this main component so as to have the composition shown in Table 4. did. After that, a molded body was obtained in the same manner as in Example 1 and fired at the temperature shown in Table 5 to obtain a disk-shaped porcelain.

Then, the surface of this porcelain was observed at 2000 times with an electron microscope to measure the grain size.

Next, silver electrodes were baked on both sides of the obtained porcelain to obtain a measurement sample (capacitor). Then, as in Example 1, the dielectric constant (ε), the dielectric loss (tan δ), the temperature change rate of the capacitance, and the dielectric loss (ta) when an AC voltage is applied.
nδ), specific resistance and dielectric breakdown voltage were determined. The results of these measurements are shown in Table 5.

Next, the reason why the composition range of the dielectric ceramic composition of the present invention is limited will be described based on the results of the above-mentioned Examples 1 and 2.

Sample Nos. 1-1, 1-2, 2-1 and 2
-2, the contents of lanthanum oxide, cerium oxide, neodymium oxide, praseodymium oxide, and samarium oxide are LaO _3/2 , CeO ₂ , and PrO, respectively.
_When the total is less than 1.4 mol% when converted to _11/6 , NdO _3/2 and SmO _3/2 , the dielectric constant becomes low and the grain size becomes 4 μm or more, which is not preferable. On the other hand, as shown in Sample Nos. 1-12, 1-13, 2-19 and 2-20, when the total content of these exceeds 5.0 mol%, the dielectric constant becomes low and the sintering temperature becomes low. Is unfavorably high.

As shown in Sample Nos. 1-14 and 2-21, when the content of CaZrO ₃ and CaSnO ₃ is less than 0.5 mol%, the rate of change in capacitance exceeds -55%, which is not preferable. . On the other hand, sample numbers 1-15 and 2-
As shown in 22, when the content of CaZrO ₃ and CaSnO ₃ exceeds 6.7 mol%, the dielectric constant is significantly lowered, which is not preferable.

As shown in Sample Nos. 1-16, 1-17, 2-23 and 2-24, when the BaTiO ₃ raw material C or D containing a large amount of alkali metal oxide was used, the dielectric constant was significantly increased. It becomes low, which is not preferable.

As shown in Sample Nos. 1-18 and 2-25, when the content of TiO ₂ is less than 1.4 mol%, the sintering temperature becomes high, which is not preferable. On the other hand, sample number 1-1
As shown in 9 and 2-26, when the content of TiO ₂ exceeds 5.0 mol%, the specific resistance at 25 ° C. and 125 ° C., that is, the insulation resistance becomes small, which is not preferable.

When the glass content is less than 0.3 parts by weight, the sintering temperature is 1 as shown in sample No. 2-27.
When it exceeds 300 ° C, the effect of lowering the sintering temperature is hardly obtained. On the other hand, as shown in Sample No. 2-28, when the glass content exceeds 2.5 parts by weight, the dielectric constant decreases, which is not preferable.

On the other hand, in the samples using the dielectric ceramic composition within the scope of the present invention (sample numbers 1-3 to 1-11 and sample numbers 2-3 to 2-18), The grain size of the sintered body is as small as 1.0 to 3.5 μm. Further, the rate of change in capacitance at −25 ° C. and 85 ° C. based on 20 ° C. is within −55%, which satisfies the E characteristics of JIS standard.

Further, in the case of a composition in which glass as a low temperature sintering agent is not added, the dielectric constant is as high as 9300 or more,
Dielectric loss is 3.0% when AC voltage of V / mm is applied
Within and small. Also, the specific resistance at 25 ° C is 10 ¹³ Ω · c.
The specific resistance at 125 ° C. is as large as 10 ¹⁰ Ω · cm or more. Furthermore, the dielectric breakdown voltage is 12 to 13k in AC voltage.
It shows a large value of 14 to 15 kV / mm in V / mm and DC voltage.

Further, in the case of the composition in which the glass component is added, the dielectric constant is 100 to 20 as compared with the case where it is not added.
Although it decreases about 0, it shows a high value of 9150 or more.

Also, the dielectric loss when an AC voltage of 100 V / mm is applied is as small as 4.0% or less. Furthermore, the breakdown voltage is 1 kV compared to the case where glass is not added.
/ Mm, but the AC voltage is 11 to 12 kV / m
m and DC voltage show a large value of 13 to 14 kV / mm. Then, the sintering temperature can be lowered by about 50 ° C. by adding glass.

Example 3 A laminated ceramic capacitor using the dielectric ceramic composition of the present invention was produced. First, a polyvinyl butyral binder and an organic solvent such as toluene or ethyl alcohol were added to the raw materials weighed so as to have the composition of Sample No. 1-11, and the mixture was mixed with a ball mill to obtain 16
The mixture was mixed for a time to form a slurry, and a 22 μm ceramic green sheet was prepared by the doctor blade method. A palladium paste for internal electrodes was printed on this ceramic green sheet by a screen printing method. Then, a plurality of ceramic green sheets were laminated so that the printed palladium pastes face each other, and thermocompression bonded to obtain a laminated body.

Next, the laminate was fired at a temperature of 1300 ° C. for 2 hours to obtain a sintered body. Then, silver paste was applied to both end faces of the sintered body and baked at 800 ° C. in air to form an external electrode electrically connected to the internal electrode. Thus, as shown in sample number 3-1 of Table 6, the outer dimensions are 1.6 mm in width × 3.2 mm in length × 1.2 mm in thickness, the thickness of the dielectric ceramic layer between the internal electrodes is 13 μm, and the effective dielectric A total of 19 body ceramic layers and a counter electrode area per layer of 2.0 mm ² were obtained as a monolithic ceramic capacitor.

Next, using the raw materials that were weighed so as to have the composition of Sample No. 2-15, and under the conditions of the firing temperature of 1250 ° C., otherwise in the same manner as in Sample No. 3-1, the sample No. of Table 6 was obtained. A multilayer ceramic capacitor shown in 3-2 was produced.

Thereafter, the capacitance and the dielectric loss (tan) of the two types of monolithic ceramic capacitors obtained above are
δ), insulation resistance (IR), rate of change in capacitance with temperature, and breakdown voltage were determined.

In this case, the dielectric constant and the dielectric loss are 2
It was measured under the conditions of 5 ° C., 1 kHz and 1 Vrms. Also, the insulation resistance is 25 ° C, and a DC voltage of 25V is 2
It was applied for a minute and measured. Furthermore, the temperature change rate of the capacitance is −25 ° C. and 8 ° C. based on the capacitance at 20 ° C.
The rate of change in capacitance (ΔC / C ₂₀ ) at 5 ° C. was determined. Then, the dielectric breakdown voltage is obtained by applying an AC voltage and a DC voltage separately at a boosting rate of 100 V / sec, and
Voltage and breakdown voltage at AC voltage were measured.

As a comparative example, BaTiO ₃ 78.5 is used.
14.5 mol% BaZrO ₃ and C based on mol%
7.0 mol% of aZrO ₃ was added, and a laminated ceramic capacitor was produced by the same method as described above. And
Each characteristic was measured similarly for this comparative example.

The surface of each monolithic ceramic capacitor was observed under an electron microscope at a magnification of 2000 to measure the grain size. The above results are shown in Table 6.

As shown in Table 6, the monolithic ceramic capacitor made of the porcelain composition of the present invention has a smaller grain size and a smaller dielectric loss than the comparative example. Further, the monolithic ceramic capacitor of the present invention has
It has a double breakdown voltage. That is, it is shown that a laminated ceramic capacitor having good characteristics can be obtained by using the porcelain composition of the present invention as a dielectric ceramic layer.

In the above embodiment, CaZrO is used.
The ratio of ₃ and CaSnO ₃ is Ca (Zr _0.5 Sn _0.5 ).
Although the case of O ₃ is described, the present invention is not limited to this. That is, CaZrO ₃ and Ca
Similar effects can be obtained within the range where the ratio of SnO ₃ is Ca (Zr _1-x Sn _x ) O ₃ (where 0 <x ≦ 1.0).

Further, in the above-mentioned examples, BaTiO ₃ , CaZrO ₃ , CaSnO prepared in advance are used.
_{Although a} predetermined amount of ₃ was weighed and mixed with other constituent components, the present invention is not limited to this method. That is, BaCO ₃ containing a small amount of alkali metal oxides in advance,
TiO ₂ , CaCO ₃ , ZrO ₂ , and SnO ₂ are used as raw materials, and they are compounded so as to have a desired composition ratio and calcined at a predetermined temperature (Ba _1-x Ca _x ) (Ti _1-yz Z
Even if r _y Sn _z ) O ₃ is prepared and then mixed with other constituents, the same properties can be obtained.

Further, in the above embodiment, 8BaO-6SrO-6CaO was used as the glass as the low temperature sintering agent.
Although glass represented by -30Li ₂ O-50SiO ₂ (mol%) is used, BaO-Sr having a composition ratio other than that is used.
_{O-CaO-Li 2 O-} SiO 2 based glass, or even using a glass or the like other SiO ₂ as a main component, equivalent properties can be obtained.

Furthermore, a small amount of MnC as a reduction inhibitor is used as a starting material for the dielectric ceramic composition shown in the above-mentioned embodiment.
The addition of O ₃ , Fe ₂ O _3, etc. does not impair the characteristics of the resulting dielectric ceramic.

[0047]

As is apparent from the above description, according to the present invention, the grain size is small, the dielectric constant is high, and the temperature and voltage dependence of the dielectric constant is small.
In addition, a dielectric ceramic composition having a high dielectric breakdown voltage can be obtained.

Further, BaO--SrO is added to the above dielectric composition.
The sintering temperature can be lowered by adding glass containing —CaO—Li ₂ O—SiO ₂ as a main component.

By using the above-mentioned dielectric composition as the dielectric ceramic layer, it has a high dielectric constant even though the grain size is small, the temperature and voltage dependence of the dielectric constant is small, and the dielectric breakdown is caused. A monolithic ceramic capacitor having a high voltage can be obtained.

[0050]

[Table 2]

[0051]

[Table 3]

[0052]

[Table 4]

[0053]

[Table 5]

[0054]

[Table 6]

Claims (4)

[Claims] 1. BaTiO ₃ 83.3-9 having an alkali metal oxide content of 0.03% by weight or less as an impurity.
With respect to 6.7 mol%, lanthanum oxide, cerium oxide,
At least one selected from neodymium oxide, praseodymium oxide, and samarium oxide is La.
O _3/2 , CeO _{2 ,} NdO _3/2 , PrO _11/6 and SmO
Converted to _3/2 , 1.4-5.0 mol% in total, CaZr
The O ₃ and _{CaSnO 3 Ca (Zr 1-x} Sn x) O
₃ (provided that 0 <x ≦ 1.0), but 0.5 to 6.
A dielectric ceramic composition containing 7 mol% and TiO ₂ in an amount of 1.4 to 5.0 mol%. 2. BaTiO ₃ 83.3-9 having an alkali metal oxide content of 0.03% by weight or less as an impurity.
With respect to 6.7 mol%, lanthanum oxide, cerium oxide,
At least one selected from neodymium oxide, praseodymium oxide, and samarium oxide is La.
O _3/2 , CeO _{2 ,} NdO _3/2 , PrO _11/6 and SmO
Converted to _3/2 , 1.4-5.0 mol% in total, CaZ
and rO ₃ a and _{CaSnO 3 Ca (Zr 1-x} Sn x) O 3
(However, converted to 0 <x ≦ 1.0), 0.5 to 6.7.
100% by weight of the main component containing mol% and 1.4 to 5.0 mol% of TiO ₂ , BaO-SrO-CaO-L
A dielectric porcelain composition comprising 0.3 to 2.5 parts by weight of a sub-component made of glass containing i ₂ O-SiO ₂ as a main component. 3. A plurality of dielectric ceramic layers and the dielectric
A plurality of internal electrodes arranged via a ceramic layer,
Laminated ceramics consisting of external electrodes connected to internal electrodes
In the capacitor, the dielectric ceramic layer is made of alkali gold as an impurity.
BaTiO3 containing less than 0.03% by weight of a metal oxide₃
Lanthanum oxide, acid relative to 83.3-96.7 mol%
Cerium oxide, neodymium oxide, praseodymium oxide and
And at least one selected from samarium oxide
LaO respectively_3/2, CeO₂, NdO _{3 / 2}, PrO
_11/6And SmO_3/21.4 to 5.0 in total when converted to
Mol%, CaZrO₃And CaSnO₃And Ca (Zr
_1-xSn_x) O₃(However, convert to 0 <x ≦ 1.0)
0.5-6.7 mol% and TiO.₂1.4 to
It is composed of a dielectric material containing 5.0 mol%, and the internal electrode is composed mainly of palladium.
A monolithic ceramic capacitor characterized in that 4. A multilayer ceramic capacitor comprising a plurality of dielectric ceramic layers, a plurality of internal electrodes arranged via the dielectric ceramic layers, and external electrodes connected to the internal electrodes, wherein the dielectric The ceramic layer is made of BaTiO ₃ containing 0.03% by weight or less of an alkali metal oxide as an impurity.
With respect to 83.3-96.7 mol%, at least one selected from lanthanum oxide, cerium oxide, neodymium oxide, praseodymium oxide, and samarium oxide is LaO _3/2 , CeO ₂ , NdO _3/2 , PrO
_{Converted to 11/6} and SmO _3/2 for a total of 1.4 to 5.0
Mol%, CaZrO ₃ and CaSnO ₃ in Ca (Zr
_1-x Sn _x ) O ₃ (where 0 <x ≦ 1.0) is converted to 0.5 to 6.7 mol%, and TiO ₂ is 1.4 to
The main component containing 5.0 mol% is 100 parts by weight and BaO
Auxiliary component composed of _{-SrO-CaO-Li 2 O-} SiO 2 glass whose main component is composed of a dielectric material consisting of 0.3 to 2.5 parts by weight, the internal electrode is composed mainly of palladium A monolithic ceramic capacitor characterized by being configured as.