JP2005243926A - Capacitor module with fuse, and capacitor module device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly reliable capacitor module with a fuse which can prevent a ceramic capacitor from breaking and scattering due to heat generation in fuse meltdown at a low price. <P>SOLUTION: The capacitor module with a fuse wherein a ceramic capacitor 1 and a fuse 2 are connected in series and constituted integrally on a first surface of a substrate 3 has a first conductor 4 formed in one end side of a second surface of the substrate 3, a second conductor 5 which is insulated from the first conductor 4 and formed in the second surface of the substrate 3, and a third conductor 6 which is insulated from the first conductor 4 and the second conductor 5 and formed in the other end side of the second surface of the substrate 3. One end of the fuse 2 is connected to the first conductor 4, the other end is connected to the second conductor 5, the first electrode of the ceramic capacitor 1 is connected to the second conductor 5, and a second electrode of the ceramic capacitor 1 is connected to the third conductor 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a capacitor module with a fuse and a capacitor module device in which a plurality of capacitor modules with a fuse are arranged in parallel, for example, used in an in-vehicle inverter device.

In general, an inverter device requires a capacitor for smoothing the ripple voltage generated by a switching power supply. In the past, an electrolytic capacitor having a relatively large size was used, but recently, a ceramic capacitor has been used instead of an electrolytic capacitor. Has come to be used.
FIG. 8 is a diagram illustrating a configuration of a conventional capacitor module for an inverter device disclosed in, for example, Patent Document 1 (Japanese Patent Laid-Open No. 2001-178151). FIG. 8A is a plan view, and FIG. ) Is a front view.
In the figure, 100 is a ceramic capacitor (multilayer ceramic capacitor), 200 is a substrate, and a plurality of ceramic capacitors 100 are arranged on the substrate 200.
Each ceramic capacitor 100 is provided with a large number of lead terminals at electrode portions having different polarities, and the large number of lead terminals are inserted into through holes of the substrate 200 and mounted on the substrate 200.
A switching module (switching power supply) (not shown) is provided below the substrate 200.
Are disposed, and a plurality of ceramic capacitors 100 are disposed at positions overlapping with each other via the substrate 200.

However, since the capacitor module shown in FIG. 8 does not have a fuse function and a rupture or short circuit occurs due to a short failure of the ceramic capacitor itself, for example, when used as a smoothing capacitor for an in-vehicle inverter device. There has been a need for self-opening of ceramic capacitors with fuses.
For this reason, various ceramic capacitors with a fuse function have been proposed. Examples of conventional ceramic capacitors with a fuse function include, for example, Japanese Patent Application Laid-Open No. 2003-7568 or Japanese Patent Application Laid-Open No. 2003-7568. 70938) and the like.

  Patent Document 2 (Japanese Patent Laid-Open No. 2003-7568) states that “a plurality of internal electrode pairs connected to different potentials are stacked in multiple stages via a dielectric, and the internal electrode pairs are the first of the stacked body. The first side surface and the second side surface opposite to the first side surface, and are adjacent to the first and second side surfaces, and the mounting surface is different from the surface with respect to the mounting surface. 3. In a multilayer ceramic electronic component in which a single-layer or multilayer external electrode pair is formed on the fourth side surface and a conductor portion (fuse conductor portion) that electrically connects the internal electrode and the external electrode is provided on the surface of the laminate. At least this conductor part (fuse conductor part) is covered with an insulating layer, and the conductor part (fuse conductor part) does not hinder the electrical connection with the printed wiring with respect to the external electrode pair, or the insulating layer is an external electrode. Shape outside the nth of the pair Multilayer ceramic component with a fuse function, characterized in that the external electrode is partially covered or not covered so as not to hinder the electrical connection with the (n + 1) th external electrode pair " (Ie, a multilayer ceramic capacitor with a fuse function) is shown.

FIG. 9 is an exploded perspective view for explaining a conventional method for manufacturing a laminated electronic component with a fuse disclosed in Patent Document 3 (Japanese Patent Publication No. 6-70938).
In Patent Document 3, “First, a plurality of first ceramic green sheets 111 and 112 coated with an electrode paste for internal electrodes and a first electrode paste for forming a fuse pattern having a fusing part 117c are coated. The second ceramic green sheet 113 and at least a third ceramic green sheet 114 in which a region where the electrode material can escape when the fusing part 117c is cut are prepared. The second and third ceramic green sheets 113, 114 are connected to the plurality of first ceramic green sheets 111, 114, so that the region where the electrode material of the third ceramic green 114 can escape comes into contact with the upper fusing part 117c. 112 is laminated together to obtain a laminated body, and then the laminated body is pressure-bonded in the laminating direction and then burned. By. "To obtain a sintered sintered body by, multilayer electronic component fuse elements are integrated (i.e., monolithic ceramic capacitor having a fuse function) have been described can be obtained.
JP 2001-178151 A (FIGS. 1 and 2) JP 2003-7568 A (FIG. 1, FIG. 2, paragraph 0022) Japanese Examined Patent Publication No. 6-70938 (FIG. 1, page 2, left column, line 34 to right column, second line)

Since the conventional multilayer ceramic capacitor with a fuse function disclosed in Patent Document 2 or Patent Document 3 is provided with a fuse therein, the structure and manufacturing process are complicated and the cost is high.
Furthermore, it lacks versatility as a general multilayer capacitor.
Moreover, since the fuse is provided inside, the heat dissipation of the heat generated by the fuse is poor.
Therefore, there is a risk that the multilayer ceramic capacitor itself is ruptured and scattered due to heat generation energy generated by the fusing current of the fuse or the overcurrent flowing through the fuse portion.

The present invention has been made to solve the above-described problems, and provides a highly reliable capacitor module with a fuse that can prevent a ceramic capacitor from bursting or scattering due to heat generated when the fuse is blown at a low price. For the purpose.
It is another object of the present invention to provide a highly reliable capacitor module device having a large capacitor capacity in which a plurality of capacitor modules with fuses are connected in parallel on a single substrate.

  The capacitor module with a fuse according to the present invention is a capacitor module with a fuse that is integrally formed by connecting a ceramic capacitor and a fuse in series on the first surface of the substrate, and is one end side of the second surface of the substrate. A first conductor formed on the substrate; insulated from the first conductor; formed on a second surface of the substrate; insulated from the first conductor and the second conductor; A third conductor formed on the other end of the second surface of the first fuse, wherein one end of the fuse is electrically connected to the first conductor, and the other end of the fuse is connected to the second conductor. Electrically connected, the first electrode portion of the ceramic capacitor is electrically connected to the second conductor, and the second electrode portion of the ceramic capacitor is electrically connected to the third conductor. Yes.

  The capacitor module with a fuse according to the present invention is a capacitor module with a fuse in which a ceramic capacitor and a fuse are connected in series on the first surface of the substrate, and are integrally formed. A first conductor formed on one end side, insulated from the first conductor, a second conductor formed on the first surface of the substrate, insulated from the first conductor and the second conductor; A third conductor formed on the other end of the first surface of the substrate; one end of the fuse is electrically connected to the first conductor; the other end is electrically connected to the second conductor. The first electrode portion of the ceramic capacitor is electrically connected to the second conductor, and the second electrode portion of the ceramic capacitor is electrically connected to the third conductor. Together with the third conductor and electrical Fourth conductor connected is formed on the second surface of the substrate.

  The capacitor module device according to the present invention is a capacitor module device in which a plurality of serially connected bodies of ceramic capacitors and fuses are arranged in parallel on the first surface of the substrate, and are configured integrally. A first conductor formed on one end side of the first surface, a plurality of first conductors insulated from the first conductor and formed separately on the first surface of the substrate corresponding to each series connection body A second conductor, a third conductor insulated from the second conductor and formed on the other end of the first surface of the substrate, and one end of each of the fuses constituting the plurality of series-connected bodies is Electrically connected to the first conductor, the other end of each fuse is electrically connected to the corresponding second conductor, and the first of each ceramic capacitor constituting the plurality of serially connected bodies The electrode part corresponds to the corresponding second conductor Each of the ceramic capacitors is electrically connected, and the second electrode portion of each ceramic capacitor is electrically connected to the third conductor, and the second conductor of the substrate is electrically connected to the third conductor. Connected fourth conductors are formed.

ADVANTAGE OF THE INVENTION According to this invention, the highly reliable capacitor module with a fuse with high safety | security which can prevent a ceramic capacitor from bursting and scattering by the heat_generation | fever at the time of fuse melting | fusing is realizable at low cost.
In addition, according to the present invention, it is possible to realize a capacitor module with a fuse that can improve heat dissipation and reduce inductance.
Further, according to the present invention, it is possible to realize a highly reliable capacitor module device having a large capacitor capacity, in which a plurality of capacitor modules with fuses are arranged and integrated on a substrate.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
In the drawings, the same reference numerals indicate the same or equivalent ones.
Embodiment 1 FIG.
1 is a cross-sectional view showing a configuration of a capacitor module with a fuse according to Embodiment 1 of the present invention.
In the figure, 1 is a ceramic capacitor (simply referred to as a capacitor) disposed on the first surface (front surface) of the substrate 3, and 2 is a fuse disposed on the first surface (surface) of the substrate 3.
As the ceramic capacitor 1 and the fuse 2, those generally used are used.

As described in the background art section, the electrode parts (referred to as the first electrode part and the second electrode part) having different polarities of the ceramic capacitor 1 are provided with a large number of lead terminals.
For example, 1 a is a first lead terminal provided on the first electrode portion of the ceramic capacitor 1, and 1 b is a second lead terminal provided on the second electrode portion of the ceramic capacitor 1.
As shown in the figure, the first lead terminal 1 a of the ceramic capacitor 1 is electrically connected to the second conductor 5 that is inserted into the through hole of the substrate 3 and formed on the second surface (back surface) of the substrate 3. It is connected to the. Similarly, the second lead terminal 1 b of the ceramic capacitor 1 is electrically connected to a third conductor 6 that is inserted into the through hole of the substrate 3 and formed on the second surface (back surface) of the substrate 3. ing.

Further, 2a is a first lead terminal provided at one end of the fuse 2, and 2b is a second lead terminal provided at the other end of the fuse 2.
The first lead terminal 2 a of the fuse 2 is electrically connected to the first conductor 4 formed on the second surface (back surface) of the substrate 3, and the second lead terminal 2 b of the fuse 2 is connected to the substrate 3. It is electrically connected to the second conductor 5 formed on the second surface (back surface).
Therefore, the ceramic capacitor 1 and the fuse 2 are connected in series via the second conductor 5 formed on the back surface of the substrate 3.
Note that a necessary creeping insulation distance is secured between the first conductor 4 and the second conductor 5 and between the second conductor 5 and the third conductor 6.
Reference numeral 7 denotes a first external terminal electrically connected to the first conductor 4 at the end of the substrate 3, and reference numeral 8 denotes an end of the substrate 3 opposite to the first external terminal 7. 2 is a second external connection terminal electrically connected to the third conductor 6.

  As described above, the capacitor module with a fuse according to the present embodiment is a capacitor module with a fuse integrally formed by connecting the ceramic capacitor 1 and the fuse 2 in series on the first surface of the substrate 3, First conductor 4 formed on one end side of the second surface of substrate 3, second conductor 5 insulated from first conductor 4 and formed on the second surface of substrate 3, first conductor 4 and the second conductor 5 and has a third conductor 6 formed on the other end of the second surface of the substrate 3, and one end of the fuse 2 is electrically connected to the first conductor 4. The other end of the fuse 2 is electrically connected to the second conductor 5, the first electrode portion of the ceramic capacitor 1 is electrically connected to the second conductor 5, and the second electrode of the ceramic capacitor 1 is The part is electrically connected to the third conductor 6.

According to the present embodiment, since a generic capacitor and fuse that are used for general purposes can be used as they are, a capacitor module with a fuse can be manufactured at low cost.
Further, since the fuse is connected in series with the ceramic capacitor, even when the ceramic capacitor is short-circuited, the fuse is blown by the overcurrent flowing through the fuse, and the overcurrent due to the short-circuit failure does not continue to flow. Therefore, it is possible to prevent the ceramic capacitor from being destroyed or scattered at the time of a short circuit failure.
In other words, a highly safe and highly reliable capacitor module with a fuse that can prevent the ceramic capacitor from bursting and scattering due to heat generated when the fuse is blown can be realized at a low price.
Further, since the fuse is a separate body from the ceramic capacitor, the heat dissipation is good.

Embodiment 2. FIG.
FIG. 2 is a cross-sectional view showing the configuration of the capacitor module with fuses according to the second embodiment of the present invention.
The configuration of the capacitor module with a fuse according to the present embodiment is basically the same as that of the capacitor module with a fuse according to the first embodiment described above, but the substrate 3 includes a first conductor 4 and a second conductor 5. A slit 9 is formed in the facing portion, and a slit 10 is formed in the portion where the second conductor 5 and the third conductor 6 are facing each other.
In the capacitor module with a fuse according to the present embodiment, the slit 9 and the slit 10 are formed in the substrate 3, so that the first conductor 4 and the second conductor 5 and the second conductor 5 and the third conductor are formed. It is possible to ensure a large creepage insulation distance between 6 and further increase safety and reliability.

Embodiment 3 FIG.
FIG. 3 is a cross-sectional view showing the configuration of the capacitor module with fuses according to the third embodiment of the present invention.
In the capacitor module with a fuse according to the first embodiment or the second embodiment described above, the distance between the external connection terminals (the distance between the first external connection terminal 7 and the second external connection terminal 8) is long. Becomes larger.
Also, as ceramic capacitors become larger, the number of through-holes increases dramatically, and it is necessary to increase the distance between conductors in order to ensure insulation between conductors. Is disadvantageous.
In addition, since the conductor is disconnected at the through hole, it is difficult to secure a current-carrying path, and there is a problem that the structure is disadvantageous for diversion such as local heat generation.
The capacitor module with a fuse according to the present embodiment solves such problems.

In the figure, reference numeral 1 denotes a ceramic capacitor that is disposed on the first surface (front surface) of the substrate 3 and 2 is a fuse that is disposed on the first surface (front surface) of the substrate 3.
As in the case of the first embodiment or the second embodiment, the ceramic capacitor 1 and the fuse 2 are used for general purposes.
The electrode parts (first electrode part and second electrode part) having different polarities of the ceramic capacitor 1 are provided with a large number of surface mounting terminals for surface mounting on the substrate 3.
1 a is a first surface mounting terminal provided on the first electrode portion of the ceramic capacitor 1, and 1 b is a second surface mounting terminal provided on the second electrode portion of the ceramic capacitor 1.
As shown in the figure, the first surface mounting terminal 1 a of the ceramic capacitor 1 is electrically connected to the second conductor 5 formed on the first surface (front surface) of the substrate 3.
Similarly, the second surface mounting terminal 1 b of the ceramic capacitor 1 is electrically connected to a third conductor 6 formed on the first surface (front surface) of the substrate 3.

2a is a first surface mounting terminal provided at one end of the fuse 2, and 2b is a second surface mounting terminal provided at the other end of the fuse 2.
The first surface mounting terminal 2 a of the fuse 2 is electrically connected to the first conductor 4 formed on the first surface (surface) of the substrate 3, and the second surface mounting terminal 2 b of the fuse 2. Is electrically connected to a second conductor 5 formed on the first surface (front surface) of the substrate 3.
Therefore, the ceramic capacitor 1 and the fuse 2 are connected in series via the second conductor 5 formed on the first surface (front surface) of the substrate 3.
It is assumed that a necessary creeping insulation distance is secured between the first conductor 4 and the second conductor 5 and between the second conductor 5 and the third conductor 6.

As shown in FIG. 3, in the present embodiment, the fourth conductor 11 is formed on substantially the entire second surface (back surface) of the substrate 3, and the fourth conductor 11 is a ceramic capacitor. At one end, the third conductor 6 is electrically connected through a through hole 12 formed in the substrate 3.
Reference numeral 7 denotes a first external terminal electrically connected to the first conductor 4 at the end of the substrate 3, and 8 denotes a back surface on the same side as the first external terminal 7 of the substrate 3. The second external connection terminal is electrically connected to the fourth conductor 11 at the end.
According to the present embodiment, the first conductor 4, the second conductor 5, the third conductor 6, and the fourth conductor 11 are formed to face each other with the substrate 3 interposed therebetween. The direction of the current I flowing from the external terminal 7 to the second external connection terminal 8 is opposite between the front surface and the back surface of the substrate 3, and the inductance can be lowered.

  As described above, the capacitor module with a fuse according to the present embodiment is a capacitor module with a fuse integrally formed by connecting the ceramic capacitor 1 and the fuse 2 in series on the first surface of the substrate 3, A first conductor 4 formed on one end side of the first surface of the substrate 3, a second conductor 5 insulated from the first conductor 4 and formed on the first surface of the substrate 3, a first The third conductor 6 is insulated from the conductor 4 and the second conductor 5 and formed on the other end side of the first surface of the substrate, and one end of the fuse 2 is electrically connected to the first conductor 4. The other end of the fuse 2 is electrically connected to the second conductor 5, the first electrode portion of the ceramic capacitor 1 is electrically connected to the second conductor 5, and the second electrode of the ceramic capacitor 1 is The part is electrically connected to the third conductor 6 and Fourth conductor 11 is formed on the second surface of the substrate 3 connected third conductor 6 electrically.

According to the present embodiment, by surface mounting the ceramic capacitor and the fuse on the substrate, it is possible to eliminate the through hole for electrically connecting the ceramic capacitor and the fuse to the conductor, ensuring a conductor area, Heat dissipation can be improved.
Furthermore, it is possible to provide a continuous conductor by surface mounting and eliminating the through hole, and a sufficient current path can be secured.
Further, the inductance can be reduced by sandwiching the substrate, making the conductors face each other, and reversing the direction of the current flowing through the conductor on the front and back surfaces of the substrate.

Embodiment 4 FIG.
FIG. 4 is a plan view showing the configuration of the capacitor module device according to Embodiment 4 of the present invention.
In the capacitor module device according to the present embodiment, a plurality of serially connected bodies of ceramic capacitors 1 and fuses 2 are arranged in parallel on the surface (first surface) of the substrate 3 and are integrally configured.
In the figure, 1 is a ceramic capacitor, 2 is a fuse, 3 is a substrate, 4 is a first conductor formed on the surface (first surface) of the substrate 3, and 5 is on the surface (first surface) of the substrate 3. A plurality of second conductors 6 are formed on the surface (first surface) of the substrate 3 and are third conductors.

As shown in the figure, each second conductor 5 is insulated from the first conductor 3 and the third conductor 6, and on the surface (first surface) of the substrate 3, a ceramic capacitor 1 and a fuse are provided. 2 is formed separately corresponding to each series connection body connected in series.
One end of each fuse is electrically connected to the first conductor 4, and the other end of each fuse is electrically connected to the second conductor 5 corresponding to its own serial connection body.
The first electrode portion of each ceramic capacitor 1 is electrically connected to the second conductor 5 corresponding to its series connection body, and the second electrode portion of each ceramic capacitor 1 is the third conductor 6. Is electrically connected.

Reference numeral 12 denotes a through hole, and a fourth conductor 11 (not shown) is formed on almost the entire back surface (second surface) of the substrate 3, and the fourth conductor 11 has a through hole 12. It is electrically connected to the third conductor 6 via. (See Figure 3)
Thus, in the present embodiment, a plurality of series connection bodies S in which the ceramic capacitor 1 and the fuse 2 are connected in series by the second conductor 5 are arranged in parallel.
Reference numeral 7 denotes a first external terminal electrically connected to the first conductor 4 on the front surface (first surface) of the substrate 3, and reference numeral 8 denotes a back surface (second surface) of the substrate 3. The second external connection terminal is electrically connected to the fourth conductor 11 (not shown).

  As described above, the capacitor module device according to the present embodiment is a capacitor module in which a plurality of serially connected bodies of ceramic capacitors 1 and fuses 2 are arranged in parallel on the first surface of the substrate 3 and are integrally configured. A first conductor 4 formed on one end of the first surface of the substrate 3, insulated from the first conductor 4, and corresponding to each series connection body on the first surface of the substrate 3. The third conductor 6 formed on the other end side of the first surface of the substrate 3 is insulated from the plurality of second conductors 5, the first conductor 4 and the second conductor 5 formed separately. One end of each fuse 2 constituting the plurality of serially connected bodies is electrically connected to the first conductor 4, and the other end of each fuse 2 is electrically connected to the corresponding second conductor 5, respectively. Of each ceramic capacitor 1 connected and constituting a plurality of serially connected bodies One electrode portion is electrically connected to the corresponding second conductor 5, and the second electrode portion of each ceramic capacitor is electrically connected to the third conductor 6 and the second electrode portion of the substrate 3. A fourth conductor 11 electrically connected to the third conductor 6 is formed on this surface.

According to the present embodiment, since a plurality of series connection bodies (that is, capacitor modules with fuses) in which ceramic capacitors and fuses used in general are connected in series are arranged in parallel, A highly reliable capacitor module device having a large capacity and capable of preventing the bursting and scattering of the ceramic capacitor due to the heat generated when the fuse is blown can be realized at a low price.
Further, as in the case of the third embodiment, the first conductor, the second conductor, the third conductor, and the fourth conductor are formed so as to face each other with the substrate interposed therebetween. The direction of the current flowing from the terminal to the second external connection terminal is opposite between the front surface and the back surface of the substrate, and the inductance can be lowered.

Embodiment 5 FIG.
FIG. 5 is a plan view of a main part showing a case where any one of a plurality of serially connected bodies of ceramic capacitors and fuses is blown by overcurrent in the capacitor module device according to the fourth embodiment.
As shown in the figure, when one of the plurality of series-connected bodies is blown, the second conductor 5 to which the blown fuse 2 is connected and the series-connected body to which the fuse is blown are disposed adjacent to each other. The insulation distance between the second conductor 5 to which the fuse of the serial connection body connected is insufficient, and the creeping insulation distance cannot be secured.
The present embodiment improves such a problem of the capacitor module device according to the fourth embodiment.

FIG. 6 is a plan view showing the configuration of the capacitor module device according to Embodiment 5 of the present invention.
The capacitor module device according to the present embodiment is the same as the capacitor module device according to the fourth embodiment, in which a plurality of second conductors 5 are formed in a staggered manner as shown in the figure, and the direction of each series connection body is alternately set. It is characterized by being arranged differently.
That is, one end of each fuse 1 is electrically connected to the first conductor 4, and the other end of each fuse 1 is electrically connected to the corresponding second conductor 5. A first series connection in which the first electrode portion of the capacitor 1 is electrically connected to the corresponding second conductor, and the second electrode portion of each ceramic capacitor 1 is electrically connected to the third conductor 6 And one end of each fuse 2 is electrically connected to the corresponding second conductor 5, and the other end of each fuse 2 is electrically connected to the third conductor 6. The first series connection body includes an electrode portion electrically connected to the first conductor 4 and a second electrode portion electrically connected to the corresponding second conductor 5. The connection body and the second connection body are alternately arranged.

In the present embodiment, by adopting such a configuration, even if the fuse of any of the serially connected bodies is blown, the second conductor 5 to which the blown fuse was connected as shown in FIG. The distance between the second conductor 5 to which the fuse of the serial connection body arranged adjacent to the second conductor 5 is connected can be increased.
That is, even when the fuse is blown, a creeping insulation distance between the second conductors corresponding to the adjacent series connection bodies can be secured.
Therefore, in addition to the effect of the capacitor module according to the fourth embodiment, the reliability can be further improved.

  According to the present invention, a highly reliable capacitor module with a fuse capable of preventing explosion and scattering of a ceramic capacitor due to heat generation at the time of blowing a fuse and a large-capacity capacitor module device using a plurality of such capacitor modules with a fuse at low cost Useful to realize.

1 is a cross-sectional view showing a configuration of a capacitor module with a fuse according to Embodiment 1. FIG. FIG. 6 is a cross-sectional view illustrating a configuration of a capacitor module with a fuse according to a second embodiment. FIG. 6 is a cross-sectional view illustrating a configuration of a capacitor module with a fuse according to a third embodiment. FIG. 6 is a plan view showing a configuration of a capacitor module device according to a fourth embodiment. It is a figure for demonstrating the problem of the capacitor | condenser module apparatus by Embodiment 4. FIG. FIG. 10 is a plan view showing a configuration of a capacitor module device according to a fifth embodiment. It is a figure for demonstrating the effect of the capacitor | condenser module apparatus which concerns on Embodiment 5. FIG. It is a figure which shows the structure of the conventional capacitor | condenser module for inverter apparatuses. It is a disassembled perspective view for demonstrating the manufacturing method of the conventional laminated electronic component with a fuse.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ceramic capacitor 2 Fuse 3 Board | substrate 4 1st conductor 5 2nd conductor 6 3rd conductor 7 1st external connection terminal 8 2nd external connection terminal 9 Slit 10 Slit 11 4th conductor 12 Through hole

Claims (5)

A capacitor module with a fuse in which a ceramic capacitor and a fuse are connected in series on the first surface of the substrate and configured integrally,
A first conductor formed on one end of the second surface of the substrate; a second conductor insulated from the first conductor; formed on the second surface of the substrate; the first conductor; Having a third conductor insulated from the second conductor and formed on the other end of the second surface of the substrate;
One end of the fuse is electrically connected to the first conductor, the other end of the fuse is electrically connected to the second conductor, and the first electrode portion of the ceramic capacitor is the second conductor. A capacitor module with a fuse, characterized in that the second electrode portion of the ceramic capacitor is electrically connected to the third conductor.   The substrate is characterized in that a slit is formed in at least one of a portion where the first conductor and the second conductor face each other and a portion where the second conductor and the third conductor face each other. The capacitor module with a fuse according to claim 1. A capacitor module with a fuse in which a ceramic capacitor and a fuse are connected in series on the first surface of the substrate and configured integrally,
A first conductor formed on one end of the first surface of the substrate, a second conductor insulated from the first conductor and formed on the first surface of the substrate; the first conductor; Having a third conductor insulated from the second conductor and formed on the other end of the first surface of the substrate;
One end of the fuse is electrically connected to the first conductor, the other end of the fuse is electrically connected to the second conductor, and the first electrode portion of the ceramic capacitor is the second conductor. And the second electrode portion of the ceramic capacitor is electrically connected to the third conductor, and the fourth conductor electrically connected to the third conductor is A capacitor module with a fuse, which is formed on a second surface of a substrate. A capacitor module device in which a plurality of serially connected bodies of ceramic capacitors and fuses are arranged in parallel on the first surface of the substrate and configured integrally,
A first conductor formed on one end of the first surface of the substrate, insulated from the first conductor, and formed separately on the first surface of the substrate corresponding to each series connection body A plurality of second conductors, insulated from the first conductor and the second conductor, and having a third conductor formed on the other end of the first surface of the substrate;
One end of each fuse constituting the plurality of series connection bodies is electrically connected to the first conductor, and the other end of each fuse is electrically connected to the corresponding second conductor, The first electrode portion of each ceramic capacitor constituting the series connection body is electrically connected to the corresponding second conductor, and the second electrode portion of each ceramic capacitor is electrically connected to the third conductor. A capacitor module device, characterized in that a fourth conductor electrically connected to the third conductor is formed on the second surface of the substrate while being connected.   In the plurality of series-connected bodies, one end of each fuse is electrically connected to the first conductor, and the other end of each fuse is electrically connected to the corresponding second conductor, Each of the fuses is electrically connected to the corresponding second conductor, and the second electrode portion of each ceramic capacitor is electrically connected to the third conductor, and each fuse. One end of each capacitor is electrically connected to the corresponding second conductor, the other end of each fuse is electrically connected to the third conductor, and the first electrode portion of each ceramic capacitor is connected to the first conductor. The second series connection body is electrically connected and the second electrode portion is electrically connected to the corresponding second conductor, and the first series connection body and the second connection body. 5. The container according to claim 4, wherein the Service module device.

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