WO1999043061A1 - Amortisseur de surtension - Google Patents
Amortisseur de surtension Download PDFInfo
- Publication number
- WO1999043061A1 WO1999043061A1 PCT/JP1998/000719 JP9800719W WO9943061A1 WO 1999043061 A1 WO1999043061 A1 WO 1999043061A1 JP 9800719 W JP9800719 W JP 9800719W WO 9943061 A1 WO9943061 A1 WO 9943061A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrode
- terminal
- insulating substrate
- surge absorber
- electrically connected
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel
- H01T4/12—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel hermetically sealed
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel
Definitions
- the present invention relates to a surge absorber that absorbs surge noise applied to an electronic device.
- Japanese Patent Publication No. 63-57971 / 18 a conductive ceramic thin film is formed on the surface of a cylindrical insulating member, and a micro gap is formed in the circumferential direction so as to divide the conductive ceramic thin film.
- a surge absorber having a structure in which the entire structure is sealed in a cylindrical glass with a gas filled therein is disclosed.
- Japanese Utility Model Laid-Open Publication No. 49-80351 proposes a surge absorber in which a spire-shaped electrode with a sharp point toward a microgap is formed on a flat insulating substrate.
- FIG. 17 and FIG. 18 are cross-sectional views of a conventional surge absorber.
- Fig. 17 shows a cylindrical surge absorber. Explaining the principle of operation of this surge absorber, when a surge is applied to the cylindrical surge absorber 40, an arc discharge occurs between the micro gaps 41, and then the enclosed gas is ionized by the discharge and corona discharge occurs. The resulting surge is absorbed.
- Fig. 18 shows a flat plate type surge absorber 42, but the principle of operation is basically the same as that of a cylindrical surge absorber.
- the cylindrical type has difficulty in surface mounting and automatic mounting because the lead wire extends from the center of both ends of the cylinder. There was a problem that. In addition, it was difficult to use an airtight covering material other than glass because of its cylindrical outer diameter.
- an object of the present invention is to provide a surge absorber that can be easily mounted on a surface and has high reliability against repeated discharge.
- a first aspect of the present invention for achieving this object is:
- a second terminal disposed outside the hermetic crown material and electrically connected to the second electrode
- the first electrode and the first electrode The terminal is formed on the portion of the insulating substrate on which the first electrode is disposed, penetrates between the front and back surfaces of the insulating substrate, and is internally electrically connected to the first electrode. Even when electrically connected to the through hole filled with the conductor and the conductor film formed on the back surface of the insulating substrate and electrically connecting the conductor in the through hole and the first terminal.
- the first electrode and the first terminal are formed on a portion of the insulating substrate where the first electrode is arranged, and a conductor electrically connected to the first electrode is formed therein.
- a surge absorber has an insulating film formed on an insulating substrate, and the conductive film, the first electrode, and the second electrode are formed or arranged on the insulating film.
- the first electrode and the first terminal are formed in a portion of the insulating film where the first electrode is arranged.
- the inside is filled with a conductor electrically connected to the first electrode.
- the via hole may be formed between the insulating substrate and the insulating film, and may be electrically connected to a conductor film electrically connecting the conductor in the via hole and the first terminal.
- the surge absorber of the present invention since the first electrode, the second electrode, the conductive film, and the microgap are all arranged on the same plane on the insulating substrate on a flat plate, the outer shape is reduced to the surface. It can be configured on a flat plate that is easy to mount.
- the outer shape can be easily made flat, a ceramic material such as alumina can be used as the material of the hermetic capping material.
- the first electrode, the second electrode, the conductive film, and the micro gap are all formed on the same plane and concentrically, so that the entire area of the micro gap is formed. With uniform discharge, even if a part of the conductive film is lost due to the discharge, the discharge starting voltage is hard to change, and the reliability against repeated discharge is high.
- a through hole provided on an insulating substrate and a back surface of the substrate may be used as means for connecting the first electrode disposed at the center and the first terminal for connection to the outside.
- the surge absorber disclosed therein has the excellent features. Surge absorption characteristics and high reliability are maintained as they are.
- the second electrode is a surge absorber having a structure also serving as an airtight crown material.
- the second electrode may be a part of the hermetic capping material or may be the whole.
- the surge absorber By configuring the surge absorber in this way, it is possible to reduce the size and to reduce the area for mounting on an electric circuit or the like as compared with the first embodiment.
- a third embodiment of the present invention provides
- a first terminal is formed on each of the two separated sides of the insulating substrate, and a second terminal is formed on the other two sides of the insulating substrate.
- This is a surge absorber having a structure formed.
- the surge absorber is arranged so as to straddle the signal line or the ground line, or to be placed on the signal line or the ground line. And the density of wiring on the circuit board can be increased.
- One of the first terminal and the second terminal via a film-shaped electrical connection path formed at least in part by a film-shaped fuse on the back surface of the insulating substrate; And a third terminal disposed outside the hermetic crowned material, the third terminal being connected to the airtight crowned member.
- the surge absorber of this embodiment is easy to form and the product itself does not become large.
- the fuse is not blown by mechanical vibration, and the reliability is high.
- At least one of the first to fourth types of surge absorbers A capacitor formed between the first terminal and the second terminal, the capacitor comprising a plurality of conductor films extending inside the insulating substrate and extending in parallel with each other. .
- FIG. 1 is a perspective view showing a first embodiment of a surge absorber according to the present invention, in which a cap is partially cut away to show an internal structure.
- FIG. 2 is a plan view showing a first embodiment of the surge absorber according to the present invention, and showing the cap transparently.
- FIG. 3 shows one embodiment of the first embodiment of the surge absorber of the present invention, and is a sectional view taken along line AA of FIGS. 1 and 2.
- FIG. 4 shows another embodiment of the first embodiment of the surge absorber according to the present invention, and is a sectional view taken along line AA of FIGS. 1 and 2.
- FIG. 5 shows still another embodiment of the first embodiment of the surge absorber according to the present invention, and is a sectional view taken along line AA of FIGS. 1 and 2.
- FIG. 6 is a perspective view showing a second embodiment of the surge absorber according to the present invention, in which a cap is broken to show an internal structure.
- FIG. 7 is a perspective view showing a third embodiment of the surge absorber according to the present invention, in which a cap is broken to show an internal structure.
- FIG. 8 is a sectional view taken along line AA of FIG.
- FIG. 9 is a sectional view taken along line BB of FIG.
- FIG. 10 shows a third embodiment of the surge absorber of the present invention and a wiring diagram of a circuit in which the surge absorber is mounted.
- FIG. 11 is a perspective view showing a fourth embodiment of the surge absorber of the present invention.
- FIG. 12 is a sectional view taken along line AA of FIG.
- FIG. 13 is a sectional view taken along the line AA ′ of FIG.
- FIG. 14 is an equivalent circuit diagram of a fourth embodiment of the surge absorber of the present invention.
- FIG. 15 is a sectional view showing a fifth embodiment of the surge absorber of the present invention.
- FIG. 16 is a sectional view showing another embodiment of the fifth embodiment of the surge absorber of the present invention.
- FIG. 17 is a perspective view showing a conventional cylindrical surge absorber.
- FIG. 18 is a perspective view showing a conventional flat plate type surge absorber.
- FIG. 1 to 5 show a first embodiment of a surge absorber according to the present invention.
- Fig. 1 is a perspective view showing the internal structure of the cap with a part cut away
- Fig. 2 is a plan view showing the cap as seen through
- Figs. 3 to 5 are A-A cross sections of Figs. .
- a through-hole 11 (see FIG. 3) is formed on a flat alumina substrate 1 as an insulating substrate by a conventionally known technique, and a through-hole 11 is filled with a conductor.
- Conductor film 10 is formed on the surface of substrate 1
- conductor film 12 is formed on the back surface
- first terminal 8 and second terminal 9 are formed on the side surface of alumina substrate 1.
- TiN is deposited as a film 5 by sputtering
- a circular microgap 3 having a width of about 50 m is formed by photoetching, and the conductive film 5 is formed into a desired circular shape.
- the second electrode 4 is attached concentrically with the micro gap 3 so as to be in contact with the conductive film 5.
- FIG. 4 is a sectional view showing another mode of the surge absorber of the first embodiment of the present invention.
- a fired multilayer substrate 15 having a conductor layer 14 and a via hole 16 filled with a conductor formed therein is used as an insulating substrate.
- a conductor film 10 is formed on the surface of the board 15, terminals 8 and 9 are formed on the side of the substrate, and a TiN film is deposited as a conductive film 5 on the surface of the substrate 15 by sputtering, and then photo-etched. While forming a circular microgap 3 having a width of about 50 ⁇ m, the conductive film 5 is formed into a desired circular shape, and the first electrode 2 and the second electrode 4 are formed in a conductive film concentric with the microgap 3. Attach to 5.
- the microgap is sealed in Ar gas by welding an alumina ceramic cap 6 to the frit glass 7.
- a surge absorber with excellent surface mounting suitability and high reliability against repetitive discharge is realized even if the outer shape is flat.
- FIG. 5 is a sectional view showing still another mode of the surge absorber according to the first embodiment of the present invention.
- a multi-layer substrate having an insulating layer 23, via holes 24, and an inner conductor film 25 formed on a alumina substrate 1 as an insulating substrate by a thick film multi-layer method is used.
- the conductor 10 is formed on the surface of the conductive substrate, the terminals 8 and 9 are formed on the side surface of the substrate 1, and the conductive film 5 is deposited on the surface of the substrate 1 by sputtering.
- the conductive film 5 is formed into a desired circular shape, and the first electrode 2 and the second electrode 4 are attached to the conductive film 5 concentrically with the microgap 3. .
- the microgap 3 is sealed in Ar gas by fusing the alumina ceramic cap 6 with the frit glass 7.
- FIG. 6 shows a surge absorber according to a second embodiment of the present invention.
- the figure is a perspective view showing the internal structure of the cap with a part of the cap broken away.
- a through-hole 11 (see FIG. 3) is formed on a flat alumina substrate 1 as an insulating substrate by a conventionally known technique, and a conductor is filled in the through-hole 11 and the alumina substrate 1 is formed.
- Conductor film 10 on the front surface, conductor film 12 on the back surface (similar to Fig.
- first and second terminals 8 and 9 on the side of alumina substrate 1
- a circular microgap 3 having a width of about 50 ⁇ m was formed by photoetching, and the conductive film 5 was formed into a desired circular shape.
- the second electrode 2 and the second electrode 4 are attached concentrically with the micro gap 3 so as to be in contact with the conductive film 5.
- the second electrode 4 is an annular member that is the same height as the first electrode 2 or taller than the first electrode 2.
- a disc-shaped cap 6 made of alumina ceramic is welded to the upper surface of the second electrode with a frit glass 7 to cooperate with the alumina substrate 1 and the second electrode 4 to form the micro gap 3 and
- the first electrode 2 is sealed in Ar gas.
- the first electrode 2 and the first terminal 8 are connected to each other by a conductor filled in a through hole 11 provided in the alumina substrate 1 and a conductor film 12 on the back surface of the alumina substrate.
- the second electrode 4 and the second terminal 8 are connected to each other by a conductor film 10 on the surface of the alumina substrate 1. This realizes a surge absorber that has a flat appearance, is suitable for surface mounting, and has high reliability against repeated discharges.
- the second electrode 4 and the disc-shaped cap 6 form the hermetic crown material according to the present invention, and the outer diameter of the hermetic crown material is the second diameter.
- the outer diameter is the same as the outer diameter of the electrode 4, and the second electrode 4 is sealed separately from the second electrode 4. I do.
- the hermetic crown material is constituted only by the second electrode 4. be able to. That is, a metal cap is used as the second electrode and brazed to the insulating substrate.
- FIG. 7 is a perspective view showing the internal structure of the cap with a part cut away
- FIG. 8 is a sectional view taken along line AA of FIG. 7
- FIG. 9 is a sectional view taken along line BB of FIG.
- An alumina substrate 1 as an insulating substrate having a through hole 11 formed by a conventionally known technique is prepared, a conductor is filled in the through hole 11 of the alumina substrate 1, and a conductor is formed on the surface of the alumina substrate 1.
- a conductor film 12 is formed on the film 10 and the back surface, and a first terminal 8 is formed on each of two separated side surfaces of the alumina substrate 1 and a second terminal is formed on each of the other two side surfaces.
- 9 is formed, TiN is deposited as a conductive film 5 on the surface of the alumina substrate 1 by sputtering, and then a circular microgap 3 having a width of about 50 ⁇ m is formed by photoetching, and the conductive film 5 is formed. Is formed in a desired circle, and the first electrode 2 and the second electrode 4 are attached concentrically with the microgap 3.
- microgap 3, the first electrode 2, and the second electrode 4 are sealed in Ar gas by welding an alumina ceramic cap 6 to the frit glass 7.
- the first terminal 8 and the second terminal 9 are arranged on each side surface of the alumina substrate 1 so that a straight line connecting the first terminals and a straight line connecting the second terminals 9 are orthogonal to each other. Have been.
- the first electrode 2 and the two first terminals 8 are connected to each other by a through hole 11 provided in the substrate 1 and a conductor 12 on the back surface of the substrate 1.
- the two terminals 9 are connected to each other by a conductor film formed on the surface of the substrate.
- FIG. 10 is a diagram showing a wiring pattern on a circuit board on which a surge absorber according to the third embodiment is mounted.
- the signal line 31 and the grounding line 32 on the circuit board are interrupted at the wiring position of the surge absorber 30, and the signal line 31 passes between the two terminals 8 of the surge absorber 30. It is connected by doing.
- the ground wire 32 is connected so as to extend between the other two terminals 9 of the surge absorber 30.
- the surge absorber of the present invention the density of wiring on the substrate can be increased, and the mounting density of the surge absorber can be increased. Therefore, the circuit can be downsized.
- FIGS. 11 to 13 show a fourth embodiment of the present invention.
- FIG. 11 is a perspective view when the cap 6 is turned downward
- FIG. 12 is a cross-sectional view taken along line AA of FIG. 11
- FIG. 13 is a cross-sectional view taken along line AA ′ of FIG.
- a through hole 11 is formed on a flat alumina substrate 1 as an insulating substrate by a conventionally known technique, a conductor is filled in the through hole 11, and a conductive film is formed on the surface of the alumina substrate 1. 10.
- Conductor film 12 and fuse 19 are formed on the back surface.
- the fuse 19 is formed by depositing a Pb alloy film by a vapor deposition method. Further, after applying TiN as a conductive film 5 on the surface of the alumina substrate 1 by sputtering, a circular microgap 3 having a width of about 50 / m is formed by photoetching, and the conductive film 5 is formed into a desired circular shape.
- the first electrode 2 and the second electrode 4 are attached concentrically with the microgap 3 so as to be in contact with the conductive film 5. Further, the microgap 3, the first electrode 2, and the second electrode 4 are sealed in Ar gas by welding an alumina ceramic cap 6 with frit glass 7, and furthermore, FIGS. Attach the leads 33, 34, and 20 of the shape shown in 12.
- the lead 3 3 and 3 4 correspond to a first terminal and a second terminal, respectively.
- a third terminal 20 connected to the first electrode 2 by a fuse 19 is provided. ing.
- a highly reliable fuse is incorporated, the mounting area is small, and a low-cost surge absorber is realized.
- FIG. 15 shows a fifth embodiment of the present invention.
- Conductive films 10 and 12 are formed respectively, and first and second electrodes 8 and 9 are formed on the side surface of substrate 1, and TiN is sputtered as conductive film 5 on the surface of substrate 1.
- a circular microgap having a width of about 50 ⁇ m is formed by photo-etching, the conductive film 5 is formed in a desired circular shape, and the first electrode 2 and the second electrode 4 are formed. Attach so as to be in contact with the conductive film 5 concentrically with the micro gap 3.
- microgap 3 is sealed in the Ar gas by welding the cap 6 made of alumina ceramic on the frit glass 7.
- the first electrode 2 and the conductive film 18 inside the substrate are connected by a first terminal 8 by a through hole 11 provided in the substrate 1.
- the conductive film 17 formed inside the substrate 1 has a hole at a portion where the through hole 11 penetrates, and a part of the conductive film 17 is exposed at the substrate end face on the second terminal 9 side, thereby forming a second conductive film 17.
- 2 terminal 9 and the second terminal 9 It is connected to the second electrode 4 via the conductor film 10.
- the fifth embodiment of the present invention can be configured as shown in FIG.
- the conductive film 27 inside the insulating substrate is electrically connected to the via hole 16, and another conductive film 28 is electrically connected to the second terminal electrode 9, and both conductive films 28 are electrically connected to the second terminal electrode 9.
- a surge absorber with a capacitor formed of a film is realized.
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- Thermistors And Varistors (AREA)
- Emergency Protection Circuit Devices (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP1998/000719 WO1999043061A1 (fr) | 1998-02-23 | 1998-02-23 | Amortisseur de surtension |
KR1019980706112A KR20000064522A (ko) | 1998-02-23 | 1998-02-23 | 서지어브서버 |
US09/403,594 US6285535B1 (en) | 1998-02-23 | 1998-02-23 | Surge absorber |
CN98800005A CN1244304A (zh) | 1998-02-23 | 1998-02-23 | 电涌吸收器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP1998/000719 WO1999043061A1 (fr) | 1998-02-23 | 1998-02-23 | Amortisseur de surtension |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999043061A1 true WO1999043061A1 (fr) | 1999-08-26 |
Family
ID=14207647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1998/000719 WO1999043061A1 (fr) | 1998-02-23 | 1998-02-23 | Amortisseur de surtension |
Country Status (4)
Country | Link |
---|---|
US (1) | US6285535B1 (ja) |
KR (1) | KR20000064522A (ja) |
CN (1) | CN1244304A (ja) |
WO (1) | WO1999043061A1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6510032B1 (en) * | 2000-03-24 | 2003-01-21 | Littelfuse, Inc. | Integrated overcurrent and overvoltage apparatus for use in the protection of telecommunication circuits |
TW467389U (en) * | 2000-10-26 | 2001-12-01 | Jonie Chou | Circuit to display the abnormality of three-phase surge absorber of utility power and multi-terminal fuse |
DE10259035B4 (de) * | 2002-12-17 | 2015-02-26 | Epcos Ag | ESD-Schutzbauelement und Schaltungsanordnung mit einem ESD-Schutzbauelement |
US8175874B2 (en) * | 2005-11-17 | 2012-05-08 | Shaul Shimhi | Personalized voice activity detection |
CN102792443B (zh) * | 2009-12-23 | 2015-06-10 | 天工新技术有限公司 | 表面安装的控制放电装置 |
US8395875B2 (en) | 2010-08-13 | 2013-03-12 | Andrew F. Tresness | Spark gap apparatus |
US8379356B2 (en) * | 2011-03-03 | 2013-02-19 | Holy Stone Enterprise Co., Ltd. | Overvoltage protection device and its fabrication |
KR102202405B1 (ko) * | 2014-07-04 | 2021-01-14 | 삼성디스플레이 주식회사 | 인쇄회로기판용 스파크 방지소자 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52120332U (ja) * | 1976-03-10 | 1977-09-12 | ||
JPS54114026U (ja) * | 1978-01-30 | 1979-08-10 | ||
JPH0456185A (ja) * | 1990-06-21 | 1992-02-24 | Seiko Epson Corp | プリントパターンによるヒューズ |
JPH04277279A (ja) * | 1991-03-05 | 1992-10-02 | Mitsui Mining & Smelting Co Ltd | 車両ロック装置のスイッチ機構 |
JPH0533493U (ja) * | 1991-10-03 | 1993-04-30 | 岡谷電機産業株式会社 | 保安機構付放電型サージ吸収素子 |
JPH0668949A (ja) * | 1992-08-13 | 1994-03-11 | Sun Tec:Kk | 避雷器 |
JPH0883670A (ja) * | 1994-09-09 | 1996-03-26 | Mitsubishi Materials Corp | チップ型サージアブソーバ |
JPH1069960A (ja) * | 1996-08-27 | 1998-03-10 | Mitsubishi Materials Corp | サージアブソーバ |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3900767A (en) * | 1973-04-26 | 1975-08-19 | Dale Electronics | Surge arrestor |
US5404126A (en) * | 1992-09-15 | 1995-04-04 | Okaya Electric Industries Co., Ltd. | Fuse Resistor, and discharging-type surge absorbing device with security mechanism |
JP3612658B2 (ja) * | 1997-04-04 | 2005-01-19 | 幸代 村木 | リバーシブルパッチワークキルト |
US5969924A (en) * | 1997-09-23 | 1999-10-19 | Hewlett Packard Company | Spark gap for overcoated printed circuit boards |
-
1998
- 1998-02-23 CN CN98800005A patent/CN1244304A/zh active Pending
- 1998-02-23 US US09/403,594 patent/US6285535B1/en not_active Expired - Lifetime
- 1998-02-23 KR KR1019980706112A patent/KR20000064522A/ko not_active Application Discontinuation
- 1998-02-23 WO PCT/JP1998/000719 patent/WO1999043061A1/ja not_active Application Discontinuation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52120332U (ja) * | 1976-03-10 | 1977-09-12 | ||
JPS54114026U (ja) * | 1978-01-30 | 1979-08-10 | ||
JPH0456185A (ja) * | 1990-06-21 | 1992-02-24 | Seiko Epson Corp | プリントパターンによるヒューズ |
JPH04277279A (ja) * | 1991-03-05 | 1992-10-02 | Mitsui Mining & Smelting Co Ltd | 車両ロック装置のスイッチ機構 |
JPH0533493U (ja) * | 1991-10-03 | 1993-04-30 | 岡谷電機産業株式会社 | 保安機構付放電型サージ吸収素子 |
JPH0668949A (ja) * | 1992-08-13 | 1994-03-11 | Sun Tec:Kk | 避雷器 |
JPH0883670A (ja) * | 1994-09-09 | 1996-03-26 | Mitsubishi Materials Corp | チップ型サージアブソーバ |
JPH1069960A (ja) * | 1996-08-27 | 1998-03-10 | Mitsubishi Materials Corp | サージアブソーバ |
Also Published As
Publication number | Publication date |
---|---|
CN1244304A (zh) | 2000-02-09 |
KR20000064522A (ko) | 2000-11-06 |
US6285535B1 (en) | 2001-09-04 |
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