Multilayer Varistor

Abstract

The object of the present disclosure is to obtain a multilayer varistor which suppresses crosstalk generated between external terminals. The multilayer varistor (1) has a stacked structure including a plurality of layers stacked in a third direction. The multilayer varistor (1) includes a first internal electrode (13) electrically connected to a first external electrode 12, a second internal electrode (17) electrically connected to a second external electrode (16), and a third internal electrode (21) electrically connected to a third external electrode (20). In the third direction, the first internal electrode (13) is arranged between the second internal electrode (17) and the third internal electrode (21).

Description

Technical Field

[0001] The invention relates to a multilayer varistor suitable for various electronic devices. Background Art

[0002] In recent years, as household appliances and vehicle-mounted electronic devices have been miniaturized, varistors as components of household appliances and vehicle-mounted electronic devices have also been required to be miniaturized. In addition, as the frequency increases, the electrostatic capacitance affects the performance, so a varistor with low electrostatic capacitance and small change in electrostatic capacitance is required while ensuring the specified varistor voltage. When varistors are used in pairs, it is proposed to form two varistors in one element to reduce the electrostatic capacitance difference between the varistor pairs. It should be noted that Patent Document 1 is known as an example of prior art document information related to the invention of the present application.

[0003] However, in conventional multilayer varistors, stray capacitance is generated not only between the internal electrodes that provide varistor performance, but also between the two external electrodes. As a result, crosstalk occurs, that is, a signal leaks from one of the two external electrodes to the other of the two external electrodes, which may disturb the signal waveform.

[0004] Citation List

[0005] Patent Literature

[0006] Patent Document 1: JP H 07-235406 A Summary of the invention

[0007] A multilayer varistor of one aspect of the present disclosure includes a sintered body, a first external electrode, a second external electrode, a third external electrode, a first internal electrode, a second internal electrode, and a third internal electrode. The sintered body has a first end face and a second end face opposite to each other in a first direction, a first side face and a second side face opposite to each other in a second direction, and a first main face and a second main face opposite to each other in a third direction. The sintered body has a stacked structure including a plurality of layers stacked in a third direction, and is in the shape of a rectangular parallelepiped with a long side extending in the first direction. The first external electrode is disposed on at least one of the first side face or the second side face. The second external electrode and the third external electrode are disposed on at least one of the first side face or the second side face and are located on opposite sides of the first external electrode. The first internal electrode is disposed inside the sintered body and is electrically connected to the first external electrode. The second internal electrode is disposed inside the sintered body and is electrically connected to the second external electrode. The third internal electrode is disposed inside the sintered body and is electrically connected to the third external electrode. In the third direction, the first internal electrode is disposed between the second internal electrode and the third internal electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1is a perspective stereogram of a multilayer varistor according to a first embodiment of the present disclosure;

[0009] Figure 2 is a perspective top view of a multilayer varistor according to a first embodiment of the present disclosure;

[0010] Figure 3 is a cross-sectional view of a multilayer varistor according to a first embodiment of the present disclosure;

[0011] Figure 4 is an external perspective view of the multilayer varistor of the first embodiment of the present disclosure;

[0012] Figure 5 is a circuit diagram of an example of use of the multilayer varistor of the first embodiment of the present disclosure;

[0013] Figure 6 is a perspective stereogram of a multilayer varistor according to a second embodiment of the present disclosure;

[0014] Figure 7 is an external perspective view of a multilayer varistor according to a second embodiment of the present disclosure;

[0015] Figure 8 is a perspective stereogram of a multilayer varistor according to a third embodiment of the present disclosure;

[0016] Fig. 9 is a perspective top view of a multilayer varistor according to a third embodiment of the present disclosure;

[0017] Fig.10 is a cross-sectional view of a multilayer varistor according to a third embodiment of the present disclosure; and

[0018] Fig.11 It is a cross-sectional view of a multilayer varistor according to a modified example of the present disclosure. DETAILED DESCRIPTION

[0019] (1) First Embodiment

[0020] A multilayer varistor according to a first embodiment of the present disclosure will be described below with reference to the drawings.

[0021] Figure 1 is a perspective view of a multilayer varistor 1 according to the first exemplary embodiment. Figure 2 is a perspective top view of a multilayer varistor 1 . Figure 3 : is a cross-sectional view of the multilayer varistor 1. The multilayer varistor 1 includes a sintered body 11, a first external electrode 12, a second external electrode 16, a third external electrode 20, a first internal electrode 13, a second internal electrode 17, and a third internal electrode 21. The sintered body 11 is, for example, in the shape of a rectangular parallelepiped having a length of 1.6 mm, a width of 0.8 mm, and a height of 0.8 mm, except for the external electrodes of the multilayer varistor 1. Figure 3 In the external perspective view of FIG. 1 , the outer shape of the sintered body 11 is shown in the form of a rectangular parallelepiped, but the corners of the sintered body 11 may be chamfered accordingly, or the corners of the sintered body 11 may be rounded.

[0022] In the following description, Figure 1 As shown in , the X-axis direction parallel to the long side direction of the sintered body 11 is defined as the left / right direction, the Y-axis direction is defined as the front / back direction (depth direction), and the Z-axis direction is defined as the up / down direction. In addition, the positive direction of the X-axis is defined as the right side, the positive direction of the Y-axis is defined as the front side, and the positive direction of the Z-axis is defined as the upper side. However, these directions are only examples and should not be interpreted as limiting the directions of the multilayer varistor 1 when in use. In addition, the arrows indicating the directions in the figure are shown only as auxiliary explanations and have no entity.

[0023] like Figure 2 and Figure 3 As shown in FIG. 1 , the sintered body 11 has a first end face S11 and a second end face S12 opposite to each other in a first direction, a first side face S21 and a second side face S22 opposite to each other in a second direction, and a first main face S31 and a second main face S32 opposite to each other in a third direction. The sintered body 11 has a plurality of layers LY11 to LY14 (see FIG. 1 ) stacked in the third direction. Figure 3 ) in a stacked structure and has a rectangular shape with long sides extending in the first direction.

[0024] The sintered body 11 includes a semiconductor ceramic component having nonlinear resistance characteristics. The sintered body 11 includes, for example, ZnO as a main component, may include at least one selected from the group consisting of Bi2O3, Co2O3, MnO2, and Sb2O3 as a subcomponent, and may include at least one selected from the group consisting of Pr6O 11 , Co2O3, CaCO3, and Cr2O3. In the sintered body 11, ZnO is sintered, and other subcomponents are deposited on the grain boundaries of the ZnO particles, and internal electrodes are formed between the stacked layers. The grain boundary barrier formed between the ZnO particles exhibits nonlinear resistance characteristics. The sintered body 11 is formed by, for example, forming four layers LY11 to LY14 (see Figure 3 ) are stacked on top of each other and then four layers LY11 to LY14 are sintered.

[0025] The first external electrode 12 is provided at the center of the long side surface of the sintered body 11. The first external electrode 12 is electrically connected to the first internal electrode 13. In the present embodiment, the sintered body 11 is provided with two first external electrodes 12, and one of the two first external electrodes 12 is provided on the first side surface S21, and the other of the two first external electrodes 12 is provided on the second side surface S22. The two first external electrodes 12 are electrically connected to each other via the first internal electrode 13.

[0026] The second external electrode 16 and the third external electrode 20 are provided on opposite sides of the first external electrode 12. In the present embodiment, the second external electrode 16 and the third external electrode 20 are provided on opposite sides of each of the two first external electrodes 12. That is, on the first side surface S21, the second external electrode 16 and the third external electrode 20 are provided on opposite sides of the first external electrode 12, and on the second side surface S22, the second external electrode 16 and the third external electrode 20 are provided on opposite sides of the first external electrode 12. In other words, the sintered body 11 is provided with two second external electrodes 16, and one of the two second external electrodes 16 is provided on the first side surface S21, and the other of the two second external electrodes 16 is provided on the second side surface S22. Similarly, the sintered body 11 is provided with two third external electrodes 20, and one of the two third external electrodes 20 is provided on the first side surface S21, and the other of the two third external electrodes 20 is provided on the second side surface S22.

[0027] The second internal electrode 17 electrically connected to the second external electrode 16 and the third internal electrode 21 electrically connected to the third external electrode 20 are provided inside the sintered body 11. The second external electrode 16 is electrically connected to the second internal electrode 17, and the third external electrode 20 is electrically connected to the third internal electrode 21. That is, the two second external electrodes 16 provided on the sintered body 11 are electrically connected to each other via the second internal electrode 17, and the two third external electrodes 20 provided on the sintered body 11 are electrically connected to each other via the third internal electrode 21.

[0028] In the present embodiment, the sintered body 11 includes, for example, four layers LY11 to LY14 stacked in the third direction (see Figure 3). The first internal electrode 13 is provided, for example, by printing on the upper surface of the layer LY12 (hereinafter also referred to as the first stacking surface SF1) among the four layers LY11 to LY14. The second internal electrode 17 is provided, for example, by printing on the upper surface of the layer LY13 (hereinafter also referred to as the second stacking surface SF2), wherein the layer LY13 is stacked on the upper side of the layer LY12. The third internal electrode 21 is provided, for example, by printing on the upper surface of the layer LY11 (hereinafter also referred to as the third stacking surface SF3), wherein the layer LY11 is stacked on the lower side of the layer LY12. In other words, the first internal electrode 13 is provided on the first stacking surface SF1 inside the sintered body 11. The second internal electrode 17 is provided on the second stacking surface SF2 inside the sintered body 11 which is different from the first stacking surface SF1. The third internal electrode 21 is provided on the third stacking surface SF3 inside the sintered body 11 which is different from the first stacking surface SF1 and the second stacking surface SF2. Therefore, in the third direction (up / down direction), the first inner electrode 13 is provided between the second inner electrode 17 and the third inner electrode 21 .

[0029] The first internal electrode 13 includes a first opposing portion 14 and a first lead portion 15. The width of each of the first lead portions 15 is smaller than the width of the first opposing portion 14. The first lead portion 15 protrudes from the first opposing portion 14 in the second direction. In the present embodiment, two first lead portions 15 protrude forward and backward from the first opposing portion 14. One of the two first lead portions 15 is electrically connected to the first external electrode 12 disposed on the first side surface S21, and the other of the two first lead portions 15 is electrically connected to the first external electrode 12 disposed on the second side surface S22.

[0030] The second internal electrode 17 includes a second facing portion 18 and a second lead portion 19. The width of the second lead portion 19 is smaller than the width of the second facing portion 18. The second lead portion 19 protrudes from the second facing portion 18 along the first direction. Figure 2 As shown in , the second lead-out portion 19 includes a first connection portion 19B connecting the two second external electrodes 16 to each other, and a first protrusion 19A protruding from the second opposing portion 18 in the first direction and connected to the first connection portion 19B. Here, the first protrusion 19A protrudes leftward from the second opposing portion 18, for example. The first connection portion 19B protrudes forward and backward from the left end of the first protrusion 19A to connect the two second external electrodes 16 to each other.

[0031] The third internal electrode 21 includes a third facing portion 22 and a third lead portion 23. The width of the third lead portion 23 is smaller than the width of the third facing portion 22. The third lead portion 23 protrudes from the third facing portion 22 along the first direction. In the present embodiment, the third lead portion 23 protrudes in a direction away from the second lead portion 19, for example, to the right. Figure 2As shown in , the third lead-out portion 23 includes a second connection portion 23B connecting the two third external electrodes 20 to each other, and a second protrusion 23A protruding from the third opposing portion 22 in the first direction and connected to the second connection portion 23B. Here, the second protrusion 23A protrudes rightward from the third opposing portion 22, for example. The second connection portion 23B protrudes forward and backward from the right end of the second protrusion 23A to connect the two third external electrodes 20 to each other.

[0032] Here, the first internal electrode 13 is arranged on the first stacking plane SF1, the second internal electrode 17 is arranged on the second stacking plane SF2, and the third internal electrode 21 is arranged on the third stacking plane SF3, and the first internal electrode 13, the second internal electrode 17 and the third internal electrode 21 are all arranged along the second direction.

[0033] In the present embodiment, in the first direction, the length of the first opposing portion 14 is greater than the length of each of the second opposing portion 18 and the third opposing portion 22. Furthermore, in the second direction, the length of the first opposing portion 14 is greater than the length of each of the second opposing portion 18 and the third opposing portion 22. Therefore, the area of ​​the first opposing portion 14 is greater than the area of ​​each of the second opposing portion 18 and the third opposing portion 22. The first opposing portion 14 having such a size is provided between the second opposing portion 18 and the third opposing portion 22, and therefore, stray capacitance generated between the second opposing portion 18 and the third opposing portion 22 is reduced, thereby suppressing crosstalk.

[0034] As described above, in the present embodiment, two first external electrodes 12, two second external electrodes 16, and two third external electrodes 20 are arranged on the two side surfaces (first side surface S21 and second side surface S22) which are long sides when the sintered body 11 is observed in the stacking direction. In the first direction, each of the first external electrodes 12 is arranged between the second external electrode 16 and the third external electrode 20, so that the stray capacitance between the second external electrode 16 and the third external electrode 20 can be reduced. In addition, the two first external electrodes 12 are connected to each other via the first lead-out portion 15, the two second external electrodes 16 are connected to each other via the second lead-out portion 19, and the two third external electrodes 20 are connected to each other via the third lead-out portion 23. This structure enables the first external electrode 12, the second external electrode 16, and the third external electrode 20 to be formed at the same time, so that the steps of forming these electrodes are simplified and these electrodes can be stably formed into shapes, thereby enabling the multilayer varistor 1 with less characteristic deviation to be obtained.

[0035] In addition, in the stacking direction of the sintered body 11, the first internal electrode 13 is provided between the second internal electrode 17 and the third internal electrode 21. That is, in the third direction, the first internal electrode 13 is provided between the second internal electrode 17 and the third internal electrode 21. Specifically, the first opposing portion 14 is provided between the second internal electrode 17 and the third internal electrode 21. In other words, the second opposing portion 18 and the third opposing portion 22 are opposed to each other, and the first internal electrode 13 is provided between the second opposing portion 18 and the third opposing portion 22. Therefore, the first opposing portion 14 is provided between the second opposing portion 18 and the third opposing portion 22. The second opposing portion 18 faces the first opposing portion 14, and the first opposing portion 14 faces the third opposing portion 22, thereby forming a varistor region.

[0036] Figure 5 1 is a schematic circuit diagram of a use example of the multilayer varistor 1 of the present embodiment. The multilayer varistor 1 of the present embodiment includes: a first varistor 1A formed between a first external electrode 12 and a second external electrode 16; and a second varistor 1B formed between the first external electrode 12 and a third external electrode 20. Figure 5 The circuit diagram in shows a multilayer varistor 1 disposed near a communication IC 2 configured to communicate based on a two-wire differential voltage transmission scheme. The pads of the signal lines 3 and 4 and the pad of the ground line 5 are connected to the communication IC 2. The pair of first external electrodes 12 disposed on the first side S21 and the second side S22 are connected to the pad of the ground line 5, the pair of second external electrodes 16 disposed on the first side S21 and the second side S22 are connected to the pad of the signal line 3, and the pair of third external electrodes 20 disposed on the first side S21 and the second side S22 are connected to the pad of the signal line 4. In such a circuit, for example, when static electricity is superimposed on the signal line 3 and thus a voltage higher than a prescribed threshold voltage is applied to the first varistor 1A, the resistance of the first varistor 1A decreases sharply, and a current flows through the first varistor 1A, thereby protecting the communication IC 2. It should be noted that Figure 5 The circuit shown in is merely an example of a circuit to which the multilayer varistor 1 is applied, and thus the circuit may be modified accordingly.

[0037] In the multilayer varistor 1 of the present embodiment, the first opposing portion 14 is, for example, a rectangle with a side length of 0.46 mm × 0.20 mm, and the second opposing portion 18 and the third opposing portion 22 are each, for example, a rectangle with a side length of 0.40 mm × 0.14 mm. In addition, the first opposing portion 14 and the second opposing portion 18 are spaced apart from each other by a distance of, for example, 0.035 mm and are opposed to each other. Similarly, the first opposing portion 14 and the third opposing portion 22 are spaced apart by a distance of, for example, 0.035 mm and are opposed to each other. Here, when viewed from the stacking direction, the centers of the first opposing portion, the second opposing portion, and the third opposing portion are located at the same position. That is, when viewed from the stacking direction, the first opposing portion 14 extends 0.03 mm more than the second opposing portion 18 and the third opposing portion 22, and completely covers the periphery of the second opposing portion 18 and the third opposing portion 22. In other words, when viewed from the third direction, the first opposing portion 14 covers the outer periphery of the second opposing portion 18 and the third opposing portion 22. This prevents stray capacitance from being generated between the second opposing portion 18 and the third opposing portion 22, thereby suppressing crosstalk. It should be noted that the above dimensions are merely examples and may be modified accordingly.

[0038] The second lead portion 19 having a width of, for example, 0.1 mm extends from the second opposing portion 18 and is connected to the second external electrode 16. Similarly, the third lead portion 23 having a width of, for example, 0.1 mm extends from the third opposing portion 22 and is connected to the third external electrode 20. In addition, the first lead portion 15 having a width of, for example, 0.1 mm extends from the first opposing portion 14 and is connected to the first external electrode 12. As described above, the internal electrode is connected to the external electrode via the lead portion having a width smaller than that of the opposing portion, and therefore, the stray capacitance between each second external electrode 16 and each third external electrode 20 can be reduced, thereby minimizing the influence on crosstalk.

[0039] Here, in the second direction, the width of the second lead portion 19 is desirably less than or equal to 90% of the width of the second opposing portion 18. In addition, in the second direction, the width of the second lead portion 19 is more desirably less than or equal to 70% of the width of the second opposing portion 18. Similarly, in the second direction, the width of the third lead portion 23 is desirably less than or equal to 90% of the width of the third opposing portion 22. In addition, in the second direction, the width of the second lead portion 19 is more desirably less than or equal to 70% of the width of the second opposing portion 18. On the contrary, if the width of the second lead portion 19 and the width of the third lead portion 23 are respectively greater than 90% of the width of the second opposing portion 18 and the width of the third opposing portion 22, the stray capacitance that affects the crosstalk increases, and therefore, such a width is undesirable. In addition, by making the width of the second lead portion 19 less than or equal to 90% of the width of the second opposing portion 18 in the second direction, the stray capacitance generated in the first varistor 1A is reduced, thereby suppressing the occurrence of crosstalk. In addition, by making the width of the third lead portion 23 in the second direction less than or equal to 90% of the width of the third opposing portion 22, the stray capacitance generated in the second varistor 1B is reduced, thereby suppressing the occurrence of crosstalk. In addition, by reducing the absolute value of the difference between the stray capacitance of the first varistor 1A and the stray capacitance of the second varistor 1B, crosstalk is suppressed.

[0040] In addition, in the second direction, the width of the second lead portion 19 is desirably greater than or equal to 0.08 mm, and more desirably greater than or equal to 0.1 mm. Similarly, in the second direction, the width of the third lead portion 23 is desirably greater than or equal to 0.08 mm, and more desirably greater than or equal to 0.1 mm. If the width of each of the second lead portion 19 and the third lead portion 23 is less than 0.08 mm, the shape of each of the second lead portion 19 and the third lead portion 23 tends to become unstable, and therefore, the connection of the second lead portion 19 to the second external electrode 16 and the connection of the third lead portion 23 to the third external electrode 20 are likely to become unstable. By making the second lead portion 19 and the third lead portion 23 each have a width greater than or equal to 0.08 mm, an advantage of easily maintaining the shape of each of the second lead portion 19 and the third lead portion 23 is provided.

[0041] In addition, in the first direction, the width of the first lead-out portion 15 is desirably less than or equal to 90% of the width of the first opposing portion 14. In addition, in the first direction, the width of each first lead-out portion 15 is more desirably less than or equal to 70% of the width of the first opposing portion 14. By making the width of each first lead-out portion 15 less than or equal to 90% of the width of the first opposing portion 14 in the first direction, stray capacitance is reduced, thereby suppressing the occurrence of crosstalk. In addition, in the first direction, the width of the first lead-out portion 15 is desirably greater than or equal to 0.08 mm, and more desirably greater than or equal to 0.1 mm. This provides the advantage of easily maintaining the shape of each first lead-out portion 15.

[0042] Furthermore, when viewed from above, in the first direction, the dimension of the first opposing portion 14 extending from the outer periphery of the second opposing portion 18 and the third opposing portion 22 is desirably greater than or equal to 7.5% and less than or equal to 15% of the long side of each of the second opposing portion 18 and the third opposing portion 22. In other words, in the first direction, the length of the first opposing portion 14 is preferably greater than or equal to 107.5% and less than or equal to 115% of the length of the second opposing portion 18 or the third opposing portion 22. This is because if the protrusion amount of the first opposing portion 14 is less than 7.5% of the long side of each of the second opposing portion 18 and the third opposing portion 22, crosstalk increases rapidly, and if the protrusion amount is greater than 15% of the long side, misalignment in manufacturing cannot be reduced, resulting in a large capacitance difference between the first varistor 1A and the second varistor 1B. It should be noted that in the first direction, the length of the first opposing portion 14 is more preferably greater than or equal to 9% of the length of the second opposing portion 18 or the third opposing portion 22 and less than or equal to 13.5% of the length of the second opposing portion 18 or the third opposing portion 22. In this case, crosstalk can be further reduced and misalignment in manufacturing can be reduced.

[0043] It should be noted that in the second direction, the length of the first opposing portion 14 is preferably greater than or equal to 107.5% of the length of the second opposing portion 18 or the third opposing portion 22 and less than or equal to 115% of the length of the second opposing portion 18 or the third opposing portion 22. This is because if the protrusion amount of the first opposing portion 14 is less than 7.5% of the long side of each of the second opposing portion 18 and the third opposing portion 22, crosstalk increases rapidly, and if the protrusion amount is greater than 15% of the long side, misalignment in manufacturing cannot be reduced, which results in a large capacity difference between the first varistor 1A and the second varistor 1B.

[0044] Furthermore, in the sintered body 11, the volume of the region between the first opposing portion 14 and the second opposing portion 18 is preferably less than or equal to 5%, and desirably less than or equal to 1%, of the total volume of the sintered body 11. This is because if the volume is greater than 1%, the entire varistor region is near the external electrode, which increases the capacitance that affects the crosstalk.

[0045] In addition, the area of ​​the first opposing portion 14 is preferably larger than the area of ​​the second opposing portion 18 or the third opposing portion 22. In the present embodiment, the first internal electrode 13, the second internal electrode 17, and the third internal electrode 21 are formed so that the area of ​​the first opposing portion 14 is larger than the area of ​​the second opposing portion 18 and larger than the area of ​​the third opposing portion 22.

[0046] Incidentally, the first facing portion 14 of the first internal electrode 13 is arranged to overlap with the second facing portion 18 of the second internal electrode 17 and the third facing portion 22 of the third internal electrode 21 in the third direction inside the sintered body 11. That is, the first internal electrode 13 has an overlapping region A1 (see FIG. 1 ) that overlaps with the second internal electrode 17 and the third internal electrode 21 in the third direction. Figure 2 ).

[0047] The overlapping area A1 is a rectangular area whose long side direction extends along the first direction. The length L1 of the overlapping area A1 in the first direction is greater than the length L2 of the overlapping area A1 in the second direction. The length L1 in the first direction is greater than the length L2 in the second direction, thereby reducing the stray capacitance generated between the second opposing portion 18 and the third opposing portion 22 disposed between the first opposing portion 14, thereby suppressing crosstalk.

[0048] In addition, the multilayer varistor 1 of the present embodiment includes a first varistor 1A and a second varistor 1B, wherein the electrostatic capacitance of the first varistor 1A and the electrostatic capacitance of the second varistor 1B are preferably less than or equal to 200 pF, respectively. In addition, the difference between the electrostatic capacitance of the first varistor 1A and the electrostatic capacitance of the second varistor 1B is preferably greater than or equal to -20% of the electrostatic capacitance of the first varistor 1A and less than or equal to +20% of the electrostatic capacitance of the first varistor 1A. This can be achieved when the multilayer varistor 1 is connected to a Figure 5 The communication IC shown in 2 suppresses crosstalk, thereby improving communication quality.

[0049] (2) Second Embodiment

[0050] The following will refer to Figure 6 and Figure 7 A multilayer varistor 1 according to a second embodiment will be described.

[0051] Figure 6 is a perspective view of a multilayer varistor 1 according to a second exemplary embodiment. Figure 7is an external perspective view of the multilayer varistor 1 according to the second embodiment.

[0052] In the multilayer varistor 1 of the first embodiment, the second external electrode 16 and the third external electrode 20 are provided on both side surfaces serving as long sides, whereas in the multilayer varistor 1 of the second embodiment, the second external electrode 16 is provided on the first end surface S11 of the sintered body 11, and the third external electrode 20 is provided on the second end surface S12 of the sintered body 11. It should be noted that the structures of the first internal electrode 13, the second internal electrode 17, and the third internal electrode 21 are similar to those in the first embodiment, and therefore common components are denoted by the same reference numerals and their description is omitted.

[0053] In the multilayer varistor 1 of the second embodiment, the first external electrode 12 is provided on a portion of the first side surface S21 and a portion of the second side surface S22 .

[0054] The second external electrode 16 is disposed on at least a portion of the first end surface S11. In the present embodiment, the second external electrode 16 is disposed on the entire first end surface S11 and extends from the first end surface S11 to a portion of each of the first side surface S21, the second side surface S22, the first main surface S31, and the second main surface S32.

[0055] In addition, the third external electrode 20 is provided on at least a portion of the second end surface S12. In the present embodiment, the third external electrode 20 is provided on the entire second end surface S12 and extends from the second end surface S12 to a portion of each of the first side surface S21, the second side surface S22, the first main surface S31, and the second main surface S32.

[0056] It should be noted that in the multilayer varistor 1 of the second embodiment, the second external electrode 16 extends from the first end surface S11 to a portion of each of the first side surface S21, the second side surface S22, the first main surface S31 and the second main surface S32. Therefore, compared with the multilayer varistor 1 of the first embodiment, the distance between the second external electrode 16 and each of the first external electrodes 12 can be larger, thereby reducing the stray capacitance between the second external electrode 16 and each of the first external electrodes 12.

[0057] In addition, in the multilayer varistor 1 of the second embodiment, the third external electrode 20 extends from the second end surface S12 to a portion of each of the first side surface S21, the second side surface S22, the first main surface S31 and the second main surface S32. Therefore, compared with the multilayer varistor 1 of the first embodiment, the distance between the third external electrode 20 and each of the first external electrodes 12 can be larger, thereby reducing the stray capacitance between the third external electrode 20 and each of the first external electrodes 12.

[0058] In addition, the second external electrode 16 is arranged on the first end surface S11 of the sintered body 11, and the third external electrode 20 is arranged on the second end surface S12 of the sintered body 11. Therefore, compared with the multilayer varistor 1 of the first embodiment, the distance between the second external electrode 16 and the third external electrode 20 can be larger, thereby further reducing the impact on crosstalk.

[0059] (3) Third Embodiment

[0060] The following will refer to Figures 8 to 10 A multilayer varistor 1 according to a third embodiment will be described.

[0061] Figure 8 is a perspective view of a multilayer varistor 1 according to a third exemplary embodiment. Fig. 9 is a perspective plan view of a multilayer varistor 1 according to a third exemplary embodiment. Fig.10 is a cross-sectional view of a multilayer varistor 1 according to a third embodiment.

[0062] In the multilayer varistor 1 of the second embodiment, the first opposing portion 14 covers the outer periphery of the second opposing portion 18 and the third opposing portion 22, while in the third embodiment, a portion of each of the second opposing portion 18 and the third opposing portion 22 protrudes to the outside of the first opposing portion 14, as shown in FIG. Fig. 9 and Fig.10 It should be noted that components other than the first internal electrode 13, the second internal electrode 17, and the third internal electrode 21 have a similar structure to the multilayer varistor 1 of the second embodiment, and therefore the same components as those of the second embodiment are denoted by the same reference numerals and their description is omitted.

[0063] The second facing portion 18 has a rectangular shape with its long side extending in the first direction. The second facing portion 18 is longer in the first direction than the first facing portion 14 and shorter in the second direction than the first facing portion 14.

[0064] Similarly, the third facing portion 22 has a rectangular shape with its long side extending in the first direction. The length of the third facing portion 22 in the first direction is greater than the length of the first facing portion 14 in the first direction, and the length of the third facing portion 22 in the second direction is less than the length of the first facing portion 14 in the second direction.

[0065] The first facing portion 14 and the second facing portion 18 face each other at a prescribed distance, and the first facing portion 14 and the third facing portion 22 face each other at a prescribed distance. When viewed from the stacking direction, the centers of the first facing portion 14, the second facing portion 18, and the third facing portion 22 are located at the same position, and when viewed from the stacking direction, the second facing portion 18 and the third facing portion 22 substantially overlap each other. In addition, when viewed from the stacking direction, in the first direction, the right end and the left end of the second facing portion 18 protrude from the first facing portion 14, and the right end and the left end of the third facing portion 22 protrude from the first facing portion 14. Except for the right end and the left end protruding from the first facing portion 14, the second facing portion 18 is covered by the first facing portion 14. Similarly, except for the right end and the left end protruding from the first facing portion 14, the third facing portion 22 is covered by the first facing portion 14.

[0066] Here, displacement of the internal electrodes caused in the steps of printing the internal electrodes, laminating and cutting the layers, forming the external electrodes, etc. may cause displacement of the first internal electrode 13 relative to the second internal electrode 17 and the third internal electrode 21 in the first direction. The displacement of the first internal electrode 13 relative to the second internal electrode 17 and the third internal electrode 21 in the first direction may cause an increase in the capacity difference between the electrostatic capacitance generated between each of the first external electrodes 12 and the second external electrode 16 and the electrostatic capacitance generated between each of the first external electrodes 12 and the third external electrode 20. In the multilayer varistor 1 of the present embodiment, the second opposing portion 18 and the third opposing portion 22 protrude on both sides of the first opposing portion 14 in the first direction, so even when the first internal electrode 13 is displaced relative to the second internal electrode 17 and the third internal electrode 21 in the first direction, the capacity difference between the electrostatic capacitance generated between each of the first external electrodes 12 and the second external electrode 16 and the electrostatic capacitance generated between each of the first external electrodes 12 and the third external electrode 20 can be reduced. This provides an advantage that crosstalk due to the capacity difference between the first varistor 1A and the second varistor 1B can be suppressed.

[0067] Table 1 below shows the relationship between the ratio of the longitudinal dimension (length L1) to the lateral dimension (length L2) of the overlapping area A1 and the capacity difference caused by the size change. The size change is the change in the size between the internal electrodes or the size between the internal electrode and the external electrode caused in each step of printing the internal electrode, laminating and cutting the layers, forming the external electrode, etc. The capacity difference is the absolute value of the difference between the stray capacitance generated between the first internal electrode 13 and the second internal electrode 17 and the stray capacitance generated between the first internal electrode 13 and the third internal electrode 21. In Table 1, the capacity difference of Examples 1, 3 and 4 and Comparative Examples 1 and 2 is evaluated, where the capacity difference of Example 2 is 1. Here, the sintered body 11 is in the shape of a rectangular parallelepiped with a length of 1.6 mm, a width of 0.8 mm and a height of 0.8 mm, the first opposing portion 14 is in the shape of a rectangle with a length of 0.44 mm and a width of 0.22 mm, and the second opposing portion 18 and the third opposing portion 22 are respectively in the shape of a rectangle with a length of 0.54 mm and a width of 0.12 mm.

[0068] [Table 1]

[0069]

[0070]

[0071] According to the results of Table 1, the ratio of the length L1 of the overlap region A1 in the first direction to the length L2 of the overlap region A1 in the second direction is preferably greater than or equal to 1.3 and less than or equal to 7.5. Reducing the electrostatic capacitance difference between the first varistor 1A and the second varistor 1B can improve communication quality.

[0072] In addition, Table 2 below shows the relationship between the ratio (area ratio) of the area of ​​the overlapping region A1 to the area of ​​the first stacking surface SF1 of the sintered body 11 and the capacity difference caused by the dimensional change. As described above, the dimensional change is the change in the size between the internal electrodes or the size between the internal electrodes and the external electrodes caused in each step such as printing the internal electrodes, stacking and cutting the layers, and forming the external electrodes. The capacity difference is the absolute value of the difference between the stray capacitance generated between the first internal electrode 13 and the second internal electrode 17 and the stray capacitance generated between the first internal electrode 13 and the third internal electrode 21. In Table 2, the capacity difference of Examples 5 and 6 and Comparative Examples 3 and 4 is evaluated, where the capacity difference of Example 2 is 1. Here, the sintered body 11 has a rectangular parallelepiped shape of 1.6 mm long, 0.8 mm wide and 0.8 mm high, the first facing portion 14 has a rectangular shape of 0.44 mm long and 0.22 mm wide, and the second facing portion 18 and the third facing portion 22 have rectangular shapes of 0.54 mm long and 0.12 mm wide, respectively.

[0073] [Table 2]

[0074] Area ratio Poor capacity Comparative Example 3 0.020 0.85 Example 5 0.024 0.86 Example 2 0.040 1.00 Example 6 0.161 1.26 Comparative Example 4 0.391 1.63

[0075] According to the results of Table 2, the ratio of the area of ​​the overlap region A1 to the cross-sectional area of ​​the sintered body 11 on the first stacking plane SF1 is preferably greater than or equal to 0.024 and less than or equal to 0.161. Reducing the electrostatic capacitance difference between the first varistor 1A and the second varistor 1B can improve communication quality.

[0076] It should be noted that in the multilayer varistor 1 of the third embodiment, similarly to the multilayer varistor 1 of each of the first and second embodiments, the first internal electrode 13 has an overlapping region A1 that overlaps the second internal electrode 17 and the third internal electrode 21 in the third direction. Here, on the first stack plane SF1, the overlapping region A1 is in the second region A3 other than the first region A2, where each of the first external electrode 12, the second external electrode 16, and the third external electrode 20 is projected on the first region A2. This reduces the stray capacitance generated between each of the first external electrodes 12 and the second external electrode 16 and the stray capacitance generated between each of the first external electrodes 12 and the third external electrode 20, thereby suppressing crosstalk. It should be noted that the multilayer varistor 1 of each of the first and second embodiments includes the overlapping region A1 located in the second region A3 other than the first region A2 on the first stack plane SF1, where each of the first external electrode 12, the second external electrode 16, and the third external electrode 20 is projected on the first region A2, thereby suppressing crosstalk.

[0077] It should be noted that the first internal electrode 13 , the second internal electrode 17 , and the third internal electrode 21 of the third embodiment can be applied to the multilayer varistor 1 of the first embodiment, thereby providing advantages similar to those provided by the multilayer varistor 1 of the third embodiment.

[0078] (4) Variant

[0079] Modifications of the multilayer varistor of the present disclosure will be described below.

[0080] Figure 1 The multilayer varistor 1 in the embodiment includes: a layer including the second internal electrode 17 and the first internal electrode 13 facing each other; and a layer including the third internal electrode 21 and the first internal electrode 13 facing each other. However, alternatively, as Fig.11As shown in , a plurality of layers each including the second internal electrode 17 and the first internal electrode 13 facing each other and a plurality of layers each including the third internal electrode 21 and the first internal electrode 13 facing each other may be provided. In this case, it is preferable to vertically separate the layers so that the plurality of layers each including the second internal electrode 17 and the first internal electrode 13 are provided, for example, on the upper surface side, and the plurality of layers each including the third internal electrode 21 and the first internal electrode 13 are provided, for example, on the lower surface side, as shown in FIG. Fig.11 As shown in . This configuration can further suppress crosstalk. In addition, by increasing the opposing area of ​​the second internal electrode 17 and the first internal electrode 13 and the opposing area of ​​the third internal electrode 21 and the first internal electrode 13, the performance as a varistor can be improved.

[0081] It should be noted that in the multilayer varistor 1 of each of the second and third embodiments, the plurality of second internal electrodes 17 and the plurality of first internal electrodes 13 may face each other, and / or the plurality of third internal electrodes 21 and the plurality of first internal electrodes 13 may face each other.

[0082] In addition, in the multilayer varistor 1 of the first embodiment, the first external electrode 12, the second external electrode 16, and the third external electrode 20 are provided on both the first side surface S21 and the second side surface S22, but the first external electrode 12, the second external electrode 16, and the third external electrode 20 may be provided on at least one of the first side surface S21 or the second side surface S22. That is, the first external electrode 12, the second external electrode 16, and the third external electrode 20 may be provided only on the first side surface S21 or the second side surface S22.

[0083] Furthermore, in the above-described embodiment, four layers LY11 to LY14 are stacked one on another to form the sintered body 11, but the sintered body 11 is not limited to having a stacked structure including four layers. The sintered body 11 has at least a stacked structure including a plurality of layers.

[0084] The multilayer varistor 1 according to the present disclosure reduces stray capacitance generated between external electrodes and thus suppresses crosstalk, and thus the multilayer varistor 1 is industrially useful.

[0085] Reference numerals list

[0086] 1 Multilayer Varistor

[0087] 1A First Varistor

[0088] 1B Second varistor

[0089] 11 Sintered body

[0090] 12. First external electrode

[0091] 13. First internal electrode

[0092] 14 First facing part

[0093] 15 First lead-out section

[0094] 16 Second external electrode

[0095] 17 Second internal electrode

[0096] 18 Second facing part

[0097] 19 Second lead-out section

[0098] 19A First protrusion

[0099] 19B First connection

[0100] 20 Third external electrode

[0101] 21 Third internal electrode

[0102] 22 Third counterpoint

[0103] 23 Third lead-out section

[0104] 23A Second protrusion

[0105] 23B Second connection

[0106] A1 Overlapping Area

[0107] A2 First Area

[0108] A3 Second Area

[0109] LY11 to LY14 layers

[0110] S11 First end face

[0111] S12 Second end face

[0112] S21 First side

[0113] S22 Second side

[0114] S31 First main surface

[0115] S32 Second main surface

[0116] SF1 First stacking surface

[0117] SF2 Second layer stacking surface

[0118] SF3 third stacking surface.

Claims

1. A multilayer varistor, comprising: Sintered body; a first internal electrode; a second internal electrode; a third internal electrode; a first external electrode; a second external electrode; as well as The third external electrode, The sintered body: having a first end face and a second end face opposite to each other in a first direction, a first side face and a second side face opposite to each other in a second direction, and a first main face and a second main face opposite to each other in a third direction, having a stacked structure including a plurality of layers stacked on each other in the third direction, and In the shape of a cuboid, the long side of the cuboid extends in the first direction, The first internal electrode is provided on a first stacking surface inside the sintered body, The second internal electrode is provided on a second stacking surface inside the sintered body, the second stacking surface being different from the first stacking surface, The third internal electrode is provided on a third stacking surface inside the sintered body, the third stacking surface being different from the first stacking surface and the second stacking surface, the first outer electrode is electrically connected to the first inner electrode, the second outer electrode is electrically connected to the second inner electrode, the third outer electrode is electrically connected to the third inner electrode, The first internal electrode includes a first facing portion and a first lead-out portion, the width of the first lead-out portion is smaller than the width of the first facing portion, and the first facing portion is disposed between the second internal electrode and the third internal electrode. The second internal electrode includes a second facing portion and a second lead-out portion, wherein a width of the second lead-out portion is smaller than a width of the second facing portion, The third internal electrode includes a third facing portion and a third lead-out portion, wherein a width of the third lead-out portion is smaller than a width of the third facing portion, The first facing portion is disposed between the second facing portion and the third facing portion, and In the first direction, a length of the first facing portion is greater than a length of the second facing portion and greater than a length of the third facing portion.

2. A multilayer varistor, comprising: Sintered body; a first internal electrode; a second internal electrode; a third internal electrode; a first external electrode; a second external electrode; as well as The third external electrode, The sintered body: having a first end face and a second end face opposite to each other in a first direction, a first side face and a second side face opposite to each other in a second direction, and a first main face and a second main face opposite to each other in a third direction, having a stacked structure including a plurality of layers stacked on each other in the third direction, and In the shape of a cuboid, the long side of the cuboid extends in the first direction, The first internal electrode is provided on a first stacking surface inside the sintered body, The second internal electrode is provided on a second stacking surface inside the sintered body, the second stacking surface being different from the first stacking surface, The third internal electrode is provided on a third stacking surface inside the sintered body, the third stacking surface being different from the first stacking surface and the second stacking surface, the first outer electrode is electrically connected to the first inner electrode, the second outer electrode is electrically connected to the second inner electrode, the third outer electrode is electrically connected to the third inner electrode, The first internal electrode includes a first facing portion and a first lead-out portion, the width of the first lead-out portion is smaller than the width of the first facing portion, and the first facing portion is disposed between the second internal electrode and the third internal electrode. The second internal electrode includes a second facing portion and a second lead-out portion, wherein a width of the second lead-out portion is smaller than a width of the second facing portion, The third internal electrode includes a third facing portion and a third lead-out portion, wherein a width of the third lead-out portion is smaller than a width of the third facing portion, The first facing portion is disposed between the second facing portion and the third facing portion, and In the second direction, a length of the first facing portion is greater than a length of the second facing portion and greater than a length of the third facing portion.

3. A multilayer varistor, comprising: Sintered body; a first internal electrode; a second internal electrode; a third internal electrode; a first external electrode; a second external electrode; as well as The third external electrode, The sintered body: having a first end face and a second end face opposite to each other in a first direction, a first side face and a second side face opposite to each other in a second direction, and a first main face and a second main face opposite to each other in a third direction, having a stacked structure including a plurality of layers stacked on each other in the third direction, and In the shape of a cuboid, the long side of the cuboid extends in the first direction, The first internal electrode is provided on a first stacking surface inside the sintered body, The second internal electrode is provided on a second stacking surface inside the sintered body, the second stacking surface being different from the first stacking surface, The third internal electrode is provided on a third stacking surface inside the sintered body, the third stacking surface being different from the first stacking surface and the second stacking surface, the first outer electrode is electrically connected to the first inner electrode, the second outer electrode is electrically connected to the second inner electrode, the third outer electrode is electrically connected to the third inner electrode, The first internal electrode includes a first facing portion and a first lead-out portion, the width of the first lead-out portion is smaller than the width of the first facing portion, and the first facing portion is disposed between the second internal electrode and the third internal electrode. The second internal electrode includes a second facing portion and a second lead-out portion, wherein a width of the second lead-out portion is smaller than a width of the second facing portion, The third internal electrode includes a third facing portion and a third lead-out portion, wherein a width of the third lead-out portion is smaller than a width of the third facing portion, The first facing portion is disposed between the second facing portion and the third facing portion, and An area of ​​the first facing portion is larger than an area of ​​the second facing portion and larger than an area of ​​the third facing portion.

4. A multilayer varistor comprising: Sintered body; a first internal electrode; a second internal electrode; a third internal electrode; a first external electrode; a second external electrode; as well as The third external electrode, The sintered body: having a first end face and a second end face opposite to each other in a first direction, a first side face and a second side face opposite to each other in a second direction, and a first main face and a second main face opposite to each other in a third direction, having a stacked structure including a plurality of layers stacked on each other in the third direction, and In the shape of a cuboid, the long side of the cuboid extends in the first direction, The first internal electrode is provided on a first stacking surface inside the sintered body, The second internal electrode is provided on a second stacking surface inside the sintered body, the second stacking surface being different from the first stacking surface, The third internal electrode is provided on a third stacking surface inside the sintered body, the third stacking surface being different from the first stacking surface and the second stacking surface, the first outer electrode is electrically connected to the first inner electrode, the second outer electrode is electrically connected to the second inner electrode, the third outer electrode is electrically connected to the third inner electrode, The first internal electrode includes a first facing portion and a first lead-out portion, the width of the first lead-out portion is smaller than the width of the first facing portion, and the first facing portion is disposed between the second internal electrode and the third internal electrode. The second internal electrode includes a second facing portion and a second lead-out portion, wherein a width of the second lead-out portion is smaller than a width of the second facing portion, The third internal electrode includes a third facing portion and a third lead-out portion, wherein a width of the third lead-out portion is smaller than a width of the third facing portion, The first facing portion is disposed between the second facing portion and the third facing portion, In the second direction, the width of the second lead-out portion is less than or equal to 90% of the width of the second facing portion, and In the second direction, a width of the third lead-out portion is less than or equal to 90% of a width of the third facing portion.

5. A multilayer varistor comprising: Sintered body; a first internal electrode; a second internal electrode; a third internal electrode; a first external electrode; a second external electrode; as well as The third external electrode, The sintered body: having a first end face and a second end face opposite to each other in a first direction, a first side face and a second side face opposite to each other in a second direction, and a first main face and a second main face opposite to each other in a third direction, having a stacked structure including a plurality of layers stacked on each other in the third direction, and In the shape of a cuboid, the long side of the cuboid extends in the first direction, The first internal electrode is provided on a first stacking surface inside the sintered body, The second internal electrode is provided on a second stacking surface inside the sintered body, the second stacking surface being different from the first stacking surface, The third internal electrode is provided on a third stacking surface inside the sintered body, the third stacking surface being different from the first stacking surface and the second stacking surface, the first outer electrode is electrically connected to the first inner electrode, the second outer electrode is electrically connected to the second inner electrode, the third outer electrode is electrically connected to the third inner electrode, The first internal electrode includes a first facing portion and a first lead-out portion, the width of the first lead-out portion is smaller than the width of the first facing portion, and the first facing portion is disposed between the second internal electrode and the third internal electrode. The second internal electrode includes a second facing portion and a second lead-out portion, wherein a width of the second lead-out portion is smaller than a width of the second facing portion, The third internal electrode includes a third facing portion and a third lead-out portion, wherein a width of the third lead-out portion is smaller than a width of the third facing portion, The first facing portion is disposed between the second facing portion and the third facing portion, and In the first direction, a length of the first facing portion is greater than or equal to 107.5% of a length of the second facing portion or the third facing portion, and less than or equal to 115% of a length of the second facing portion or the third facing portion.

6. A multilayer varistor comprising: Sintered body; a first internal electrode; a second internal electrode; a third internal electrode; a first external electrode; a second external electrode; as well as The third external electrode, The sintered body: having a first end face and a second end face opposite to each other in a first direction, a first side face and a second side face opposite to each other in a second direction, and a first main face and a second main face opposite to each other in a third direction, having a stacked structure including a plurality of layers stacked on each other in the third direction, and In the shape of a cuboid, the long side of the cuboid extends in the first direction, The first internal electrode is provided on a first stacking surface inside the sintered body, The second internal electrode is provided on a second stacking surface inside the sintered body, the second stacking surface being different from the first stacking surface, The third internal electrode is provided on a third stacking surface inside the sintered body, the third stacking surface being different from the first stacking surface and the second stacking surface, the first outer electrode is electrically connected to the first inner electrode, the second outer electrode is electrically connected to the second inner electrode, the third outer electrode is electrically connected to the third inner electrode, The first internal electrode includes a first facing portion and a first lead-out portion, the width of the first lead-out portion is smaller than the width of the first facing portion, and the first facing portion is disposed between the second internal electrode and the third internal electrode. The second internal electrode includes a second facing portion and a second lead-out portion, wherein a width of the second lead-out portion is smaller than a width of the second facing portion, The third internal electrode includes a third facing portion and a third lead-out portion, wherein a width of the third lead-out portion is smaller than a width of the third facing portion, The first facing portion is disposed between the second facing portion and the third facing portion, and In the second direction, the length of the first facing portion is greater than or equal to 107.5% of the length of the second facing portion or the third facing portion, and less than or equal to 115% of the length of the second facing portion or the third facing portion.

7. A multilayer varistor, comprising: Sintered body; a first internal electrode; a second internal electrode; a third internal electrode; a first external electrode; a second external electrode; as well as The third external electrode, The sintered body: having a first end face and a second end face opposite to each other in a first direction, a first side face and a second side face opposite to each other in a second direction, and a first main face and a second main face opposite to each other in a third direction, having a stacked structure including a plurality of layers stacked on each other in the third direction, and In the shape of a cuboid, the long side of the cuboid extends in the first direction, The first internal electrode is provided on a first stacking surface inside the sintered body, The second internal electrode is provided on a second stacking surface inside the sintered body, the second stacking surface being different from the first stacking surface, The third internal electrode is provided on a third stacking surface inside the sintered body, the third stacking surface being different from the first stacking surface and the second stacking surface, the first outer electrode is electrically connected to the first inner electrode, the second outer electrode is electrically connected to the second inner electrode, the third outer electrode is electrically connected to the third inner electrode, The first internal electrode includes a first facing portion and a first lead-out portion, the width of the first lead-out portion is smaller than the width of the first facing portion, and the first facing portion is disposed between the second internal electrode and the third internal electrode. The multilayer varistor comprises: a first varistor between the first external electrode and the second external electrode, and a second varistor between the first external electrode and the third external electrode, Each of the first varistor and the second varistor has an electrostatic capacitance less than or equal to 200 pF, A difference between an electrostatic capacitance of the first varistor and an electrostatic capacitance of the second varistor is greater than or equal to −20% of the electrostatic capacitance of the first varistor and less than or equal to +20% of the electrostatic capacitance of the first varistor.

8. A multilayer varistor comprising: Sintered body; a first internal electrode; a second internal electrode; a third internal electrode; a first external electrode; a second external electrode; as well as The third external electrode, The sintered body: having a first end face and a second end face opposite to each other in a first direction, a first side face and a second side face opposite to each other in a second direction, and a first main face and a second main face opposite to each other in a third direction, having a stacked structure including a plurality of layers stacked on each other in the third direction, and In the shape of a cuboid, the long side of the cuboid extends in the first direction, The first internal electrode is provided on a first stacking surface inside the sintered body, The second internal electrode is provided on a second stacking surface inside the sintered body, the second stacking surface being different from the first stacking surface, The third internal electrode is provided on a third stacking surface inside the sintered body, the third stacking surface being different from the first stacking surface and the second stacking surface, the first outer electrode is electrically connected to the first inner electrode, the second outer electrode is electrically connected to the second inner electrode, the third outer electrode is electrically connected to the third inner electrode, The second internal electrode includes a second facing portion and a second lead-out portion, wherein a width of the second lead-out portion is smaller than a width of the second facing portion, The third internal electrode includes a third facing portion and a third lead-out portion, wherein a width of the third lead-out portion is smaller than a width of the third facing portion, The second facing portion and the third facing portion face each other, The first internal electrode is disposed between the second facing portion and the third facing portion, The multilayer varistor comprises: a first varistor between the first external electrode and the second external electrode, and a second varistor between the first external electrode and the third external electrode, Each of the first varistor and the second varistor has an electrostatic capacitance less than or equal to 200 pF, A difference between an electrostatic capacitance of the first varistor and an electrostatic capacitance of the second varistor is greater than or equal to −20% of the electrostatic capacitance of the first varistor and less than or equal to +20% of the electrostatic capacitance of the first varistor.

9. The multilayer varistor according to any one of claims 1 to 8, wherein In the first direction, a width of the first lead-out portion is less than or equal to 90% of a width of the first facing portion.

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