JPS60169107A - Voltage nonlinear resistor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a voltage nonlinear resistor containing zinc oxide as a main component.

Conventional technology Voltage nonlinear resistor (ZnO) whose main component is zinc oxide (ZnO)
The ZnO element (hereinafter referred to as ``rZnO element'') has excellent non-intuitive properties and is therefore used, for example, in semiconductor concentrators such as transistors and thyristors, or in surge amplifiers for electrical equipment. This type of ZnO element is usually obtained by mixing ZnO as a main component with several types of additives including bismuth oxide (Biass) as subcomponents, and molding and sintering the mixture. Here, Bi25g is ZnO
Due to its low melting point compared to
It is added to promote crystal growth of nO particles. Conventionally, in order to fully exhibit its function, %Biass was used in a large amount of 0.3 mole or more based on the total components.

On the other hand, when manufacturing ZnO elements, in order to improve the life characteristics of the ZnO element and to provide an insulating coating on the outer periphery of the ZnO crystal, a temperature of 400 to 900°C is applied after sintering.
requires a heat treatment process. However, such heat treatment changed the crystal structure of sBi2O5, and the electrical characteristics of the ZnO device were significantly deteriorated. The degree of the decrease is greater as the heat treatment temperature is higher. And, such conventional ZnO elements are limited to a certain current range (for example, 100μ
A to IA) are satisfactory as long as α (nonlinear index) is 20 or more, but there is a drawback that α is extremely reduced outside the above range.

In addition, as mentioned above, a large amount of Biass is used as an additive, but the Clark number of bismuth (B1) element is 2.
×10 J, Bi, 03 is extremely scarce in terms of resources.

OBJECTS OF THE INVENTION The present invention has been made in view of such conventional problems, and provides a long-life voltage nonlinear resistor that can be manufactured without using Bi2O3, which is a scarce resource, and has excellent electrical characteristics. The purpose is to

Summary of the Invention In order to achieve the above object, the first invention provides manganese oxide (Mn0z) 0.1 to 5 mols antimony oxide (Sb20g) 0.1 to 5 mols, chromium oxide (
CrzOs) 0-1 to 5 molar, silicon oxide (8i0
2) CrzOs + ZnO + cobalt oxide (002
0B) and Mn0z, and a mixture consisting of lead oxide (pbo) and 8'JOs, 0.2 to 20% by weight of the second component is added, and the mixture is sintered. Then, a ZnO element was obtained.

The second invention is Mn0z 0.1-5 Mok%,
5bzOaO11”-5 mol% r 0rzOs Ol
l~5% to 810z0.1~5 mol Aluminum oxide (AlzCh) 0.2/1000~2
A ZnO element is obtained by adding 0.2 to 20% by weight of the second component to the first component consisting of 0/1000 mol% and residual Wf=ZnO, and sintering it.

The third invention is MnO20,1 to 5 mol% + 8b
A first component consisting of 20s0, 1 to 5 mol% + 0rzOs 0.1 to 5 mol%, 5i02 0.1 to 51 mol%, the balance ZnO, zinc borosilicate glass, and the second component, each component The composition is borosilicate zinc glass 0.01 to 5 layers,
The second component is mixed in an amount of 0.2 to 20% by weight and the balance is the first component, and the mixture is sintered to form a Zn, O element.

The fourth invention is Mn0z 0.1 to 5 mol% + S
b z Oso, 1-5 mol% r 0rzOs 0.
1-5 mol%, 81020, 1-5 mol%, AlzO
A first component consisting of s O,2/1000 to 20/1000 molti, the balance being ZnO, zinc borosilicate glass, and the second component, each component having a composition of 0.01 zinc borosilicate glass.
-5% by weight of the second component, 0.2-20% by weight of the second component, and the remainder the first component, and sintered to form a ZnO element.

EXAMPLES Below, each of the first to fourth examples of the present invention will be described in detail.

1) An example of the first invention: First, a predetermined amount of each powder of PbO+ 0r203+ 5bzO+ was weighed at a molar ratio of 4:1:1, and the weighed powders were thoroughly mixed in a centrifugal ball mill. It was made into powder. Then, put this mixed powder in an alumina crucible.
Calcination was performed at a firing temperature of 1000° C. for 4 hours, and the calcined body was ground in a centrifugal ball mill to obtain a reaction product as a second component.

On the other hand, as the first component, Zn098.0 molti.

Mn0z 0.5 mol fy, 8bzOx O, 5 mol%, CrzOs 0.5 mol%, 5i020.
A predetermined amount of 5 molti was weighed. Then, double ffi% of the above reaction product was added to the first component, and then thoroughly mixed in a rotary ball mill and formed into a disk shape.

Next, this molded body was fired in air at a firing temperature of 1100°C for 6 hours, then both end faces of the obtained sintered body were polished, silver (Ag) electrodes were applied to both end faces, and a temperature of 590°C was applied. A voltage nonlinear resistor (ZnO
element) was obtained.

When the reaction product obtained by calcining the PbO*Cr2b3+ 5bzOs mixed powder was subjected to Xi diffraction, the Xi diffraction pattern was as shown in FIG. As a result of assigning the signals in FIG. 1, it was found that the reaction product contained pyrochlore crystals py as a main component.

FIG. 2 is a graph showing the voltage-current characteristics of the ZnO element of this example, with the horizontal axis representing the current and the vertical axis representing the voltage. In the second section, solid line 1 shows the characteristics of the ZnO element of this example, and solid line 2 shows the characteristics of the conventional ZnO element containing 120 g of B as the main ingredient, in the micro current region and large current region. is, the slope of reality 1 is reality 1
It is smaller than the slope of d2. Here, α is the second
Since the smaller the slope of the actual leg in the figure, the larger the slope, it can be seen that the ZnO element of this example has better nonlinear characteristics than the conventional ZnO element.

Furthermore, FIG. 3 shows the respective heat treatment temperatures and v1mA//ll1. +5-
This is a graph showing the relationship between the temperature and the rate of change of α, with the heat treatment temperature plotted on the horizontal axis and the rate of change of 6 on the vertical axis.

Note that the heat treatment time was 1 hour for both the valley temperature and the valley temperature.

Here, V1mA/w+ is the voltage at both ends when one current is passed through a ZnO element with one thickness, and α is Z
When a current of I (A) flows through the nO element, V (v)
If a voltage of V α is generated, I=(−) is an index. K is a nonlinear resistance. Further, this α varies depending on the current value, but in general, a value when a current in the range of 0.1 mA to 1 mA is applied is often used, and the value in this range will be adopted below.

In FIG. 3, solid lines 3 and 4 show the α and V1mA/+m characteristics of the ZnO device of this example, respectively, and solid lines 5 and 6 show the α and V1mA/+m characteristics of the conventional ZnO device containing Bi2O3 as the main additive, respectively. This shows the characteristics of V1mA, and in conventional ZnO elements, α and v1
For both mA/wI, when the heat treatment temperature becomes higher than about 500° C., the characteristics rapidly decrease as the temperature increases.

On the other hand, it can be seen that in the ZnO element of this example, the characteristics of both α and V1mA/m hardly change due to heat treatment.

Furthermore, FIG. 4 shows that V
Figure 27 shows the rate of increase in leakage current when a DC voltage of 85% of 1 mA/w+ is applied, with the horizontal axis representing the charging time and the vertical axis representing the rate of increase in leakage current. In FIG. 4, the solid line 7 shows the characteristics of the ZnO device of Example 2, and the solid line 8 shows the characteristics of the conventional ZnO device containing 20 g of Bi as the main component of the additive. Conventional Z
It can be seen that the rate of increase in leakage current is lower than that of the nO element, and the life characteristics are good.

Figure 5 shows ■1 when the content ratio of Sigh is changed.
This is a graph showing how mA//II++ and α change, with the horizontal axis representing the content of 8102 and the vertical axis representing Vxm.
This is the nave and α. In FIG. 5, solid line 9 shows the characteristic of VzmA/+m, solid line 10 shows the characteristic of α, and for other components, Mnoz+5bzOs
20 g of +Or was fixed at 0.5 mol each, and the content ratio of ZnO was increased or decreased correspondingly to 8102, and the content ratio of the reaction product was fixed at 2 wt.

As shown in FIG. 5, in order to obtain good characteristics for both V1mA24 and α, it is necessary that 8102 be contained in the range of 0.1 to 5 mol.

In addition, in the same way that the effective content ratio of 5i02 was confirmed as described above, other additive components, namely Mn0z+
An experiment on the 8b20s+ Cr20sr reaction product revealed that in order to obtain good characteristics for both VxmA/ra and α, Mn0z should be 0.1 to 5 mol%.
+8'bzOs is 0.1 to 5 mol%, 0rzOs is 0
．． 1 to 5 mol 1 reaction product to the first component 0.2 to
It was necessary that each content be within the range of 201 children's rewards.

11) An example of the second invention First, a reaction product as the second component was obtained in the same manner as in the example of the first invention.

On the other hand, as the first component, ZnO97,997 mol M
nOs 0.5 mol%, 5bzOa O, 5 mol%
Predetermined amounts of 0r2030.5 molti, 81020.5 molti, and AtzOa 3/1000 molti were weighed. Then, add 2 of the above reaction products to this first component.
% by weight, and then thoroughly mixed in a rotary ball mill and formed into a disk shape.

Next, in the same manner as in the embodiment of the first invention, this molded body was fired, and Ag electrodes were applied to both end faces.

Heat treatment was performed to obtain a ZnO element.

FIG. 6 is a graph showing the voltage-current t# characteristic of the ZnO element of this example, with the horizontal axis representing the current and the vertical axis representing the voltage. In FIG. 6, the solid line 11 represents the Zn of this example.
Figure 2 shows the characteristics of a conventional ZnO element containing 20g of Bi as the main additive. In the microcurrent region and large current region, the slope of solid line 11 is the slope of solid line 2. It is clear that the ZnO element of this example has better nonlinear characteristics than the conventional product. In particular, because it contains ALxOs,
α becomes large in the large current region.

In addition, Figure 7 shows that Vt in a constant temperature bath at a temperature of 130°C.
This is a graph showing the rate of increase in leakage current when a DC voltage of 85 cm of mA/n++n is applied, and the horizontal axis shows the leakage time.

The vertical axis represents the rate of increase in leakage current. In FIG. 7, real i12 shows the characteristics of the ZnO element of this example, and real #I8 shows BitO! This shows the characteristics of the conventional product containing At as the main component of additives.
This shows the characteristics of the ZnO element when the content ratio of 20 m is 20/1000 mol. Both the ZnO elements of this example and the other examples shown by the solid line 13 have a smaller leakage current increase rate than the conventional product. , it can be seen that the life characteristics are good.

Roughly speaking, Figure 8 is a graph showing how α changes when each content ratio of SiO2 or AtzOa is changed, with the content ratio of each component on the horizontal axis and α on the vertical axis. It is something. In FIG. 8, the actual IVi114 is 8
10. By changing the content ratio of Mn0z rSbzO3
The characteristics of α are shown when the content ratio of + CrtOs + AtzOs is the same as in the example, and the content ratio of ZnO is increased or decreased corresponding to 8102, and the content ratio of the reaction product is identified by 2 weights. Also, fruit +1ilI! 15
The content ratio of At20a was changed, and MnO2+ 5bzOs, Or20m was 0.5 without adding 5i02.
While fixing it in mortar, the content ratio of ZnO was changed to AtzO.
It shows the characteristics of α when it increases or decreases in response to s and the content ratio of the reaction product is fixed at a double ratio.

As shown in Figure 8, in order to obtain good characteristics, b 5
It is necessary that iOz be contained in a range of 0.1 to 5 moles. In addition, as mentioned above, Al2Om plays a role of increasing α in the large current region, so 0.2
/1000 mole or more, but as shown in Figure 8, if it exceeds 20/1000 mole, α becomes smaller, so it should be 0.2/10.
It is necessary that the content be in the range of 00 to 20/1000 mol.

In addition, in the same way that the effective content ratio of (Sin) was confirmed as described above, other additive components, namely, Mn0z+
An experiment on the 8bzOs+ 0rzO3+ reaction product revealed that in order to obtain good properties, Mn0z
is 0.1 to 5 mol mol, Sb40g is 0.1 to 5 mol mol, and rzOa is 0.1 to 5 mol mol.It is necessary that the reaction product is contained in a range of 0.2 to 20 mol mol relative to the first component. Met.

l11) Example of the third invention First, a reaction product as the second component was obtained in the same manner as in the example of the first invention.

On the other hand, as the first component, 98.0% of ZnO was used.

MnOx 0.5 mol%* sbmos 0.5 mol%
A predetermined amount of 0rtOs O55 mol 5ins 0.5 mol was weighed. Then, add 97% of this first component.
8% by weight, 2% by weight of the above reaction product, and 0.2% by weight of zinc borosilicate glass, and these were thoroughly mixed in a rotary ball mill and formed into a disk shape.

Next, in the same manner as in the first embodiment of the invention, this molded body was fired, Ag' electrodes were applied to both end faces, and heat treatment was performed to obtain a ZnO element.

FIG. 9 is a graph showing the voltage-current characteristics of the ZnO element of this example, with the horizontal axis representing the current and the vertical axis representing the voltage. In FIG. 9, the solid line 16 represents the ZnO of this example.
The solid line 2 shows the characteristics of a conventional ZnO device containing BigoB as the main additive.In the microcurrent region and large current region, the slope of the solid line 16 is greater than that of Jikkou 2. Z also becomes smaller, and Z in this example
It can be seen that the nO element has better non-direction characteristics than the conventional product.

In addition, Fig. 10 shows the V
This is a graph showing the rate of increase in leakage current when a DC voltage of 85 cm of smh/m is applied, and the horizontal axis shows the voltage application time.

The vertical axis represents the rate of increase in leakage current. In FIG. 10, actual [17] shows the characteristics of the ZnO element of this example, and actual ? fM8 shows the characteristics of a conventional product containing Bi2O3 as the main additive, and the ZnO element of this example has the following characteristics:
It can be seen that the leakage current increase rate is lower than that of conventional products, and the life characteristics are good.

Furthermore, FIG. 11 shows 810. This is a graph showing how α changes when the content ratio of 8102 is changed, with the horizontal axis representing the content ratio of 8102 and the vertical axis representing α. In FIG. 11, for the actual @is, the content ratio of 5102 was simplified, the content ratio of MnO2+ 8bzOs, Or20g was made the same as in the example, and the content ratio of ZnO was increased or decreased corresponding to 8102, and the reaction products and The characteristics of α are shown when the respective content ratios of zinc borosilicate glass are fixed at 2% by weight and 0.2% by weight, respectively.

As shown in Figure 11, in order to obtain good characteristics,
In the same way as confirming the effective content ratio of Sigh,
Other added ingredients, ie? Lin0z+ 81) 203
1"20B + reaction product, borosilicate zinc glass was tested and found that Mn0z was 0.1-5 mol% +
8bzO3 is O, 1 to 5 mol% + 0r20B is 0.
1-5 mo#%1 reaction product is 0, 2-2 in all components
0% by weight, zinc borosilicate glass is 0.01 in all components
It was necessary that each content be in the range of 5 to 5% by weight.

lv) An Example of the Fourth Invention First, a reaction product as the second component was obtained in the same manner as in the Example of the first invention.

On the other hand, as the first component, 1. ZnO 97,997 mol mol Mn0z 0.5 mol %, 5bzOs O, 5 mol/
' % r 0r20s O,5molti, 5i020
．． Predetermined amounts of 5 molti and AlzO33/1000 molti were weighed. Thereafter, 97.8% by weight of this first component, 2% by weight of the above reaction product, and 0.2% by weight of zinc borosilicate glass were each weighed, and these were sufficiently mixed in a rotating ball mill to form a disc. Molded.

Next, in the same manner as in the first embodiment of the invention, this molded body was fired, Ag electrodes were applied to both end faces, and heat treatment was performed to obtain a ZnO element.

FIG. 12 is a graph showing the voltage-current characteristics of the ZnO element of this example, with the horizontal axis representing the current and the vertical axis representing the voltage. In FIG. 12, a solid line 19 indicates Z of this embodiment.
The solid line 2 shows the characteristics of a conventional ZnO element containing Bi2's as the main additive.In the micro current region and the large current region, the slope of the solid line 19 is It can be seen that the ZnO element of this example has better non-direct winning characteristics than the conventional product. In particular, since it contains Atx03,
α becomes large in the large current region.

In addition, Fig. 13 shows that the M
This is a graph showing the rate of increase in leakage current when a DC voltage of 85 cm is applied, with the horizontal axis representing the voltage application time.

The vertical axis represents the rate of increase in leakage current. In FIG. 13, a solid line 20 shows the characteristics of the ZnO element of this example, a solid line 8 shows the characteristics of the conventional product containing Bit03 as the main component of the additive, and a solid line 21 shows the characteristics of the ZnO element of this example.
This shows the characteristics of the ZnO element when the content ratio of 1as is 20/1000 mol. Both the ZnO element of this example and the other examples shown by the solid line 21 have a smaller leakage current increase rate than the conventional product. It can be seen that the four life characteristics are good.

Furthermore, Figure 14 is a graph showing how α changes when each content ratio of %5iOz or borosilicate zinc glass is changed, with the content ratio of each component on the horizontal axis and α on the vertical axis. I'll be happy with what I took. In Figure 14, fruit? fM2
2 is 5i (change the content ratio of h% MnO2 + 8J
The content ratio of Os + 0raOs + 20g of At was the same as in the example, the content ratio of ZnO was increased or decreased corresponding to 5 iOz, and the content ratio of the reaction product and zinc borosilicate glass was 2% by weight and 0.2% by weight, respectively. The characteristics of α are shown when fixed at . In addition, the solid line 23 shows that the content ratio of zinc borosilicate glass is varied, the content ratio of the reaction product is fixed at 2 weight -, and each component in the first component is changed as in the example. The characteristics of α are shown when the overall content ratio is increased or decreased depending on the zinc borosilicate glass.

As shown in Figure 14, in order to obtain good characteristics, 8
It is necessary that borosilicate zinc glass be contained in an amount of 0.1 to 5 mol mol per Ch in the total weight range of 0.01 to 5 mol.

In addition, in the same way that the effective content ratio of (,810, etc.) was confirmed as described above, other additive components, namely, Mn0z
+ 5bzOs+ 0rzOa+ At203+ reaction product was tested and found that in order to obtain good properties, MnO2 should be 0.1-5 mol% + 5bzOs should be 0.
．． 1 to 5 mol 0rzO* is 0.1 to 5 mol %,
A1. It was necessary for the zOs to be contained in the range of 02/1ooO to 20/1000 mole 1, and the reaction product to be contained in the range of 0, 2 to 20% by weight, respectively.

By the way, Zn in each example of the second to fourth inventions
Regarding the O element, we investigated the changes in v1mA/+++++ and α before and after the heat treatment when the temperature of the heat treatment, which is the final step in the ZnO electron process, was varied variously. Similarly, the properties hardly changed due to heat treatment.

Note that the first to fourth aspects of the present invention are not limited to the above embodiments. That is, in each of the above embodiments,
The mixing ratio of the reaction products is i'bo: 8b20s:0r
Although zOx=4:1:1, the present invention is not limited to this example. That is, the blending ratio may be such that pyrochlore crystals are generated after calcination. Furthermore, the components are not limited to the combination of PbO + 8b203 + 0rzOs, but also the combination of 0r20s + ZnOrOo20
Pyrochlore crystals can be produced using any combination of PbO and 5b2o with any one or more of 3 and MnO2, and the same effect can be obtained. Furthermore, the calcination temperature and time in the calcination step to obtain the reaction product are 800 to 1100°C and 1,100°C, respectively.
It is preferable that it is in the range of 10 hours. The calcination temperature is 8
If the temperature is less than 00°C, the reaction is slow (and if it exceeds 1100°C, a large amount of PboO is generated).If the calcination time is less than 1 hour, the reaction is insufficient, and if it exceeds 10 hours, the reaction is slow. This is because the degree of volatilization increases.

On the other hand, the determined temperature and firing time in the *= step after mixing the first component and the second component (into the reaction product) are preferably in the range of 1000 to 1300°C and 1 to 20 hours, respectively. If the temperature is less than 1000°C, a dense sintered body cannot be obtained, if it exceeds 1300°C, PbO volatilization occurs and the nonlinear characteristics deteriorate, and if the firing time is less than 1 hour, a uniform sintered body cannot be obtained. This is because if the heating time exceeds 20 hours, PbO near the surface will volatilize and the non-direct NM characteristics will deteriorate.

Moreover, it is preferable that the heat treatment temperature of the sintered body is in the range of 500 to 850°C. The heat treatment temperature is 5001? If the temperature is less than , the life characteristics of the obtained ZnO element will be poor. If it exceeds 850° C., the non-linear characteristics will be poor.

In addition, in the above-mentioned examples, a centrifugal ball mill, an aluminum crucible, etc. were used to manufacture the ZnO element, but the types of these devices may be of any type as long as they meet the purpose. It is not limited to equipment.

Effects of the Invention As described above, according to the first to fourth aspects of the present invention, BixOi, which has conventionally been used in large amounts as an additive, is not used at all, so that the nonlinear characteristics do not deteriorate due to heat treatment. The non-linear index in the micro-current region and the large-current region is larger than that of the conventional one, and the non-linear index in the micro-current region is especially large, so that the leakage current during energization is small. Also,
Since the increase in leakage current due to long-term energization is small, a surge absorbing element with a long life can be obtained. Furthermore, Clark number is 2×
Since PbO, etc. with a Clark number of 1.5 x 10 is used instead of B1□o3, which is 10 and is a scarce resource,
It has effects such as being advantageous in terms of resources.

[Brief explanation of drawings]

Figure 1 shows the reaction product X used in an example of the first invention.
A line diffraction diagram, FIG. 2 shows ZnO according to an embodiment of the first invention.
Voltage-current characteristic diagram of the device, FIG. 3 is a graph showing changes in Vl mh/lan and α with respect to heat treatment temperature of ZnO device, FIG. 4 is a graph showing leakage current increase rate with respect to energization time of ZnO device, FIG. Figure 5 shows 8 in the first invention.
A graph showing VlmA, '* and α when the content ratio of 102 is changed, FIG. 6 is a voltage-current characteristic diagram of a ZnO element according to an embodiment of the second invention, and FIG. FIG. 8 is a graph showing the rate of increase in leakage current with respect to the current time.
Graph showing α when each content ratio of is changed, No. 9
Figure 1-1: Voltage-current characteristic diagram of a ZnO element according to an embodiment of the third invention, Figure 10 is a graph showing the leakage current increase rate with respect to energization time of the ZnO element, Figure 11 is a diagram of the third invention FIG. 12 is a graph showing α when the content ratio of 8102 is changed in Z according to an embodiment of the fourth invention.
The voltage-current characteristic diagram of the nO element, Fig. 13 is a graph showing the leakage current increase rate with respect to the energization time of the ZnO element, and the 14th
The figure is a graph showing α when each content ratio of 5102 or borosilicate zinc glass is changed in the fourth invention. Electricity 3 糺 (A) Netsukoizuri temperature (0C) Fig. 4 Fig. 5 s, o2 gushi negative υY ≧ 0 rishi 010)

Claims (4)

[Claims] (1) Manganese chloride 0.1 to 5 mol% Antimoy chloride 0.1 to 5 mol%, chromium oxide 0 to silicon oxide 0.1 to 5 mol% The balance zinc oxide, and the first component is oxidized. The second component is made by calcining a mixture of at least one of chromium, zinc oxide, cobalt oxide, and manganese oxide, and lead oxide and antimony oxide.
．． A voltage valve ILK source resistor characterized in that it is made by adding 2 to 20 layers of thlit and sintering it. (2) Manganese oxide 0.1-5 mol% Antimore oxide 0.1-5 mol%. ff chromium 0.1-5 mols silicon oxide 0.1-5 mols aluminum oxide 0.2/1
000 to 20/1000 molti, the balance being the first component consisting of zinc oxide, fermented chromium, and zinc oxide. A second component obtained by calcining a mixture of one or more of cobalt oxide and manganese oxide, lead oxide, and antimony oxide is added in an amount of 0.2 to 2 ON, and the mixture is sintered. Voltage non-straight leg resistor. (3) 0.1 to 5 mol of manganese oxide 0.1 to 5 mol of antimony oxide. A first component consisting of 0.1 to 5 mol chromium oxide, 0.1 to 5 mol silicon oxide, and the balance zinc oxide, zinc borosilicate glass, and chromium oxide. A second component formed by calcining a mixture consisting of any one of zinc oxide, cobalt oxide, and manganese oxide laf or more and lead oxide and antimony oxide, and a zinc borosilicate glass having a composition of each component of 0.01 to 5 Weight %, second component 0.2
A voltage nonlinear resistor characterized in that the voltage nonlinear resistor is obtained by mixing and sintering 20% by weight and 11% by weight, the remainder being a first component. (4) Manganese oxide 0.1-5 mol Antimore oxide 0.1-5 mol i Chromium oxide 0.1-5 mol. Oxidation stray electricity 0.1-5 mol%, *Aluminum oxide 0.2/
1000 to 20/1000 molti, the balance being zinc oxide, a first component consisting of zinc borosilicate glass, any one or more of chromium oxide, zinc oxide, cobalt oxide and manganese oxide, and lead oxide and antimony oxide. A second component formed by calcining a mixture of
1. A voltage nonlinear resistor, characterized in that the voltage nonlinear resistor is obtained by mixing and sintering the mixture so that the balance is 0% by weight and the remainder is a first component.