WO1999000807A1 - Surface mount multilayer capacitor - Google Patents
Surface mount multilayer capacitor Download PDFInfo
- Publication number
- WO1999000807A1 WO1999000807A1 PCT/US1998/009873 US9809873W WO9900807A1 WO 1999000807 A1 WO1999000807 A1 WO 1999000807A1 US 9809873 W US9809873 W US 9809873W WO 9900807 A1 WO9900807 A1 WO 9900807A1
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- WO
- WIPO (PCT)
- Prior art keywords
- capacitor
- lead structures
- set forth
- electrode
- terminals
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/02—Mountings
- H01G2/06—Mountings specially adapted for mounting on a printed-circuit support
- H01G2/065—Mountings specially adapted for mounting on a printed-circuit support for surface mounting, e.g. chip capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/005—Electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/30—Stacked capacitors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/341—Surface mounted components
- H05K3/3431—Leadless components
- H05K3/3442—Leadless components having edge contacts, e.g. leadless chip capacitors, chip carriers
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
- H05K1/023—Reduction of cross-talk, noise or electromagnetic interference using auxiliary mounted passive components or auxiliary substances
- H05K1/0231—Capacitors or dielectric substances
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/111—Pads for surface mounting, e.g. lay-out
- H05K1/112—Pads for surface mounting, e.g. lay-out directly combined with via connections
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09372—Pads and lands
- H05K2201/09381—Shape of non-curved single flat metallic pad, land or exposed part thereof; Shape of electrode of leadless component
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09654—Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
- H05K2201/09663—Divided layout, i.e. conductors divided in two or more parts
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09654—Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
- H05K2201/0979—Redundant conductors or connections, i.e. more than one current path between two points
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10045—Mounted network component having plural terminals
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10613—Details of electrical connections of non-printed components, e.g. special leads
- H05K2201/10621—Components characterised by their electrical contacts
- H05K2201/10636—Leadless chip, e.g. chip capacitor or resistor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates generally to the art of multilayer capacitors.
- the present invention relates to an improved multilayer ceramic capacitor (MLC) suitable for use as a surface mount decoupling capacitor.
- MLC multilayer ceramic capacitor
- decoupling capacitors electrically connected between semiconductor chips and their associated power supply. These capacitors function as a reservoir of energy during transients caused by switching within the semiconductor chip. While typically located near the chips, decoupling capacitors are often separate capacitor devices. For various reasons, surface-mount compatible MLCs have seen widespread use for this purpose.
- MLCs are generally constructed having a plurality of ceramic-electrode layers arranged in a stack. During manufacture, the stacked ceramic- electrode layers are pressed and sintered to achieve a substantially unitary capacitor body.
- the capacitor body is often rectangular in shape, with electrical terminals of opposite polarity provided along respective sides or at opposite ends .
- the capacitor device comprises a capacitor body including a plurality of first and second electrode plates interleaved in opposed and spaced apart relation.
- the capacitor body is low-aspect, and may have an aspect ratio of less than about 0.5:1.
- a dielectric material located between each opposing set of electrode plates provides a predetermined dielectric constant.
- the first and second electrode plates each include a main electrode portion and a plurality of spaced apart lead structures extending therefrom. Respective lead structures of the first electrode plates are located adjacent respective lead structures of the second electrode plates in an interdigitated arrangement . Corresponding lead structures of respective first electrode plates are electrically connected together. Likewise, corresponding lead structures of respective second electrode plates are also electrically connected together. This construction thus defines a plurality of electrical terminals of a first polarity and a plurality of electrical terminals of a second polarity. The electrical terminals may be formed by a thick-film terminal material .
- Each lateral side of the main electrode portions may have an equal number of lead structures extending therefrom.
- each lateral side has a total of two lead structures extending therefrom.
- respective lead structures extending from one of the lateral sides may be offset by one terminal position in relation to respective lead structures extending from the opposite lateral side.
- a first single lead structure may extend from an end of the main electrode portion of the first electrode plates and a second single lead structure may extend from the main electrode portion of the second electrode plate.
- an electrical circuit arrangement comprising a generally planar circuit board having a plurality of electrical current paths defined thereon.
- the arrangement further includes a capacitor device having a capacitor body surface mounted on the circuit board. Electrical terminals of the capacitor body are in respective electrical communication with predetermined of the current paths .
- the capacitor body includes at least one first electrode plate and at least one second electrode plate situated in opposed and spaced apart relation, the electrode plates being situated in a plane substantially parallel to a plane of the circuit board.
- the first electrode plate has a generally rectangular first main electrode portion with a plurality of first lead structures extending therefrom.
- the second electrode plate has a generally rectangular second main electrode portion with a plurality of second lead structures extending therefrom. Respective of the first lead structures are located adjacent respective of the second lead structures in an interdigitated arrangement.
- a ceramic material is located between each opposing set of first and second electrode plates to provide a predetermined dielectric constant .
- the electrical terminals may be located on at least one lateral side of the capacitor body.
- the electrical terminals may be located on both lateral sides of the capacitor body.
- the electrical terminals are electrically connected to current paths utilizing eutectic solder.
- each lateral side of the first main electrode portions may have an equal number of the first lead structures.
- each lateral side of the second main electrode portions may also have an equal number of the second lead structures .
- First and second lead structures located on opposite lateral sides of the respective first and second main electrode portion may be offset by one terminal position in relation to each other.
- the capacitor body has an aspect ratio of no more than approximately 1:1.
- the capacitor body may, for example, have an aspect ratio of no more than approximately 0.5:1.
- Still further objects of the present invention are achieved by a multilayer ceramic capacitor comprising a capacitor body having a low aspect ratio, such as an aspect ratio of no more than 0.5:1.
- the capacitor body is constructed having a unitary structure characteristic of a plurality of stacked, pressed and sintered ceramic-electrode layers.
- a plurality of first polarity electrical terminals and a plurality of second polarity electrical terminals are located on the outer surface of the capacitor body.
- the terminals are formed by a thick-film terminal material.
- Each ceramic-electrode layer includes an electrode plate having a main electrode portion with a plurality of lead structures extending therefrom.
- the electrode plates are interleaved such that respective lead structures of first alternating electrode plates are electrically connected to first polarity terminals and respective lead structures of second alternating electrode plates are electrically connected to second polarity terminals.
- the capacitor is constructed and arranged to exhibit an inductance of less than approximately 100 picohenries .
- respective lead structures of the first alternating electrode plates are located adjacent to respective lead structures of the second alternating electrode plates in an interdigitated arrangement .
- the capacitor body may have a generally rectangular configuration defining lateral sides of greater dimension and end sides of lesser dimension. Respective lateral sides may each have an equal number of first polarity terminals and second polarity terminals. For example, each lateral side may have two first polarity terminals and two second polarity terminals .
- a capacitor array having a plurality of capacitor devices in a surface mount compatible package.
- the array comprises a capacitor body having a unitary structure characteristic of a plurality of stacked, pressed and sintered ceramic- electrode layers.
- the ceramic electrode layers comprise a plurality of first ceramic-electrode layers and a plurality of second ceramic-electrode layers.
- the capacitor body further includes a plurality of first polarity electrical terminals and a plurality of second polarity electrical terminals located on the outer surface thereof.
- the first ceramic-electrode layers each include an electrode plate having a first main electrode portion with a plurality of first lead structures extending therefrom.
- the second ceramic- electrode layers each include a plurality of coplanar second electrode plates situated in opposed and spaced apart relation to the first electrode plate.
- the second electrode plates each have a second main electrode portion with at least one second lead structure extending therefrom.
- Respective first lead structures are located adjacent to respective second lead structures in an interdigitated arrangement.
- Each of the lead structures extends to respective electrical terminals such that the capacitor array has a number of capacitor devices equal to a number of the second electrode plates.
- Figure 1 is a perspective view of a prior art MLC device in position on a printed circuit board
- Figure 2 is a cross sectional view of the prior art MLC device of Figure 1 as taken along line 2 -2 ;
- Figure 3 is an exploded perspective view of the plurality of electrode plates utilized in the prior art MLC device of Figure 1 ;
- Figure 4 is a perspective view of a MLC device constructed in accordance with the present invention in position on a printed circuit board;
- Figure 5 is a cross sectional view of the MLC device of Figure 4 as taken along line 5-5;
- Figure 6 is an exploded perspective view of the plurality of electrode plates utilized in the MLC device of Figure 4;
- Figure 7 is a plan view of a first electrode plate stacked above a second electrode plate as in the MLC device of Figure 4 to illustrate the lead structure thereof ;
- Figure 8 is a view similar to Figure 4 illustrating a first alternative embodiment of a MLC device constructed in accordance with the present invention
- Figures 9A and 9B illustrate respective layers as may be stacked in the production of the MLC device of Figure 8 ;
- FIGS. 10A and 10B illustrate respective layers as may be stacked in the production of a MLC capacitor array constructed in accordance with the present invention
- FIGS 11A and 11B illustrate respective layers as may be stacked in the production of an alternative embodiment of a MLC capacitor array constructed in accordance with the present invention.
- Figure 1 illustrates a prior art MLC device 10 mounted to a printed circuit board 12.
- Device 10 includes a capacitor body 14 having terminals 16 and 18 of opposite polarity located at the respective ends thereof. Terminals 16 and 18 are typically formed as thick film terminals in a manner known in the art.
- Terminals 16 and 18 are electrically connected to respective conductive paths 20 and 22 defined on the surface of printed circuit board 12.
- circuit board 12 may be made from a low-temperature organic material, with the solder being a low temperature eutectic solder applied by wave or reflow soldering techniques .
- an MLC The external dimensions of an MLC will often be very small in relation to other types of capacitors.
- the size of device 10 is generally expressed as a number "XXYY, " with XX and YY being the width or length in hundredths of an inch.
- the side, i.e, width or length, to which the terminals are applied is XX, with YY expressing the other dimension.
- Some typical sizes of capacitor body 14 under this practice are 0612, 1012, 0508, 0306 and 1218.
- capacitor body 14 will typically have a low aspect ratio, defined as the ratio of the height to the longer of the width or the length. Aspect ratios of less than 1:1, and often less than 0.5:1, are not uncommon.
- capacitor body 14 includes a plurality of first electrode plates 28 interleaved in opposed and spaced apart relation with a plurality of second electrode plates 30.
- the electrode plates are separated by layers (such as layers 32) of ceramic material to provide a predetermined dielectric constant.
- Capacitor body 14 is typically made by stacking ceramic-electrode layers formed using conventional dicing techniques, which are then pressed and sintered in a kiln. As shown, all of electrode plates 28 are electrically connected to terminal 16. In a similar manner, electrode plates 30 are electrically connected to terminal 18. As a result, device 10 functions as multiple two-plate capacitors arranged in parallel.
- electrode plates 28 and 30 are readily apparent in Figure 3.
- Electrode plates 30 each include a main electrode portion 34 and a tab portion 36.
- Tab portion 36 functions as a lead structure to provide the desired electrical connection with terminal 18.
- Electrode plates 28 are similarly constructed, except that the tab portion extends from the opposite end of the main electrode portion to provide electrical connection with terminal 16.
- FIG. 4 illustrates a MLC device 38 mounted to a printed circuit board 40.
- Device 38 includes a capacitor body 42 having a plurality of first polarity terminals 44 and a plurality of second polarity terminals 46.
- each lateral side of capacitor body 42 includes a pair of first polarity terminals 44 and a pair of second polarity terminals 46.
- Terminals 44 and 46 are typically produced using thick film application techniques.
- the opposite polarity terminals located on each lateral side of capacitor body 42 are interdigitated such that a first polarity terminal 44 will always be adjacent at least one second polarity terminal 46 (and vice versa) .
- terminals of like polarity located on opposite lateral sides of capacitor body 42 are offset by one terminal position.
- a first polarity terminal 44 on one lateral side of capacitor body 42 will be situated across from a second polarity terminal 46 located on the opposite lateral side.
- a conductive path 48 may be defined on the top surface of printed circuit board 40 so that terminals 44 will be electrically connected to one another.
- Terminals 46 are electrically connected to one another by a similar conductive path located on the bottom surface of printed circuit board 40.
- Vias 50 extend up through printed circuit board 40 to respective traces 52, which provide final connection to the respective terminals 46.
- Respective solder beads 54 may be provided for terminals 44, with similar solder beads 56 being provided for each of terminals 46.
- solder beads 54 and 56 are preferably produced by a low temperature eutectic solder applied through wave or reflow soldering techniques .
- capacitor body 42 contains a plurality of first electrode plates 58 interleaved in opposed and spaced apart relation with a plurality of second electrode plates 60. Electrode plates 58 are electrically connected to each of terminals 44, whereas electrode plates 60 are electrically connected to terminals 46. Like prior art device 10, the electrode plates are preferably separated by layers of ceramic material, such as layers 62. Also similar to device 10, capacitor body 42 may be formed of stacked ceramic- electrode layers which are pressed and sintered in a kiln to yield a substantially unitary construction.
- electrode plates 58 and 60 each include a main electrode portion 64 having a plurality of lead structures 66 extending therefrom.
- Each electrode plate 58 also has a main electrode portion 68 in register with main electrode portions 64.
- a plurality of lead structures 70 extend from each of the main electrode portions 68.
- lead structures 66 connect to terminals 46, while lead structures 70 connect to terminals 44. Accordingly, respective lead structures 66 will be interdigitated with respective lead structures 70 in a manner similar to terminals 44 and 46.
- the interdigitated lead structures provide multiple, adjacent current injection points onto the associated main electrode portion. Current travelling in opposite directions, as indicated by arrows A and B of Figure 7, will tend to cancel mutual inductance that could otherwise develop.
- device 38 will generally have a very low inductance in comparison with device 10 of similar dimensions.
- many embodiments of the present invention will exhibit an inductance of less than 100 picohenries.
- the offset nature of lead structures on opposite lateral sides of each electrode plate also reduces mutual inductance levels .
- each electrode plate of device 38 includes four lead structures for production and cost considerations. It is desirable, however, that adjacent lead structures remain in close proximity to facilitate field cancellation. For example, adjacent lead structures will often be no more than 0.03 inches apart .
- FIG. 8 illustrates a MLC device 72 similar in construction to device 38.
- MLC device 72 includes a capacitor body 74 having a plurality of first polarity terminals 76.
- device 72 includes a plurality of second polarity terminals 78 are interdigitated with terminals 76.
- capacitor body 74 includes a first end terminal 80 and a second end terminal 82 of opposite polarity. While circuit board 40 may be adapted to permit connection of terminals 80 to the overall circuit, it has not been so adapted in the illustrated construction. Thus, terminals 80 and 82 remain unconnected to the current paths of circuit board 40 during use. Even in this case, however, terminals 80 and 82 are advantageous to permit testing of device 72 during manufacture with test equipment previously used to test prior art devices as shown in Figures 1-3.
- Figures 9A and 9B illustrate respective ceramic-electrode layers 82 and 84 that may be stacked in an interleaved arrangement in the production of MLC device 72.
- Layer 82 includes a ceramic substrate 86 having thereon a first electrode plate 88.
- Electrode plate 88 defines a main electrode portion 90 and a plurality of tab portions 92 extending from lateral sides thereof.
- layer 84 includes a ceramic substrate 94 and a second electrode plate 96.
- Electrode plate 96 defines a main electrode portion 98 from which a plurality of tab portions 100 extend.
- main electrode portions 90 and 98 further define tabs 102 and 104 at respective opposite ends.
- tabs 102 in the overall capacitor body extend to terminal 80, whereas tabs 104 each extend to terminal 82.
- Devices 38 and 72 are illustrative of exemplary discrete capacitor components that may be constructed according to the present invention. As will now be described, however, aspects of the present invention are useful in the production of capacitor arrays, i.e., multiple capacitor devices contained within a unitary package .
- the body containing the capacitor array may have a similar configuration as the embodiments previously discussed.
- One skilled in the art will also appreciate that such an array will be mounted to a printed circuit in a similar manner.
- FIGS 10A and 10B show respective ceramic- electrode layers 106 and 108 that may interleaved in a stack of similar layers to produce a capacitor array having an external appearance indistinguishable from that of device 38.
- Layer 106 includes a ceramic substrate 110 having a single electrode plate 112 thereon. Plate 112 defines a main electrode portion 114 from which a plurality of tab portions 116 extend.
- Layer 108 includes a plurality of electrode plates 118a-d located on ceramic substrate 120.
- Each of plates 118a-d includes a respective main electrode portion 122a- d, from which a single tab portion 124a-d extends. It will be appreciated that each of plates 118a-d operates in conjunction with opposed plate 114 to yield an individual capacitor. Thus, the overall device will have a number of capacitors equal to the number of such plates 118.
- Figures 11A and 11B illustrate respective ceramic-electrode layers 126 and 128 as may be utilized in an alternative array structure having a slightly modified "footprint."
- the array of this embodiment would have a total of three terminals on each lateral side of the capacitor body.
- Such an embodiment may be desirable in applications requiring a relatively small package size, such as 0805 or smaller.
- layer 126 includes a ceramic substrate 130 having thereon an electrode plate 132.
- Plate 132 defines a main electrode portion 134, from which a pair of tab portions 136 extend. It can be seen that the respective tab portions 136 are located directly opposite to one another across main electrode portion 134.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50553299A JP2002508114A (en) | 1997-06-27 | 1998-05-14 | Surface mount multilayer capacitors |
AU73871/98A AU7387198A (en) | 1997-06-27 | 1998-05-14 | Surface mount multilayer capacitor |
EP98921208A EP0995207A1 (en) | 1997-06-27 | 1998-05-14 | Surface mount multilayer capacitor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/884,597 US5880925A (en) | 1997-06-27 | 1997-06-27 | Surface mount multilayer capacitor |
US08/884,597 | 1997-06-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999000807A1 true WO1999000807A1 (en) | 1999-01-07 |
Family
ID=25384970
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1998/009873 WO1999000807A1 (en) | 1997-06-27 | 1998-05-14 | Surface mount multilayer capacitor |
Country Status (7)
Country | Link |
---|---|
US (2) | US5880925A (en) |
EP (1) | EP0995207A1 (en) |
JP (1) | JP2002508114A (en) |
KR (1) | KR20010020511A (en) |
CN (1) | CN1261457A (en) |
AU (1) | AU7387198A (en) |
WO (1) | WO1999000807A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0915488A2 (en) * | 1997-11-10 | 1999-05-12 | Murata Manufacturing Co., Ltd. | Multilayer capacitor |
CN1312949C (en) * | 2000-07-21 | 2007-04-25 | 皇家菲利浦电子有限公司 | Mobile telephone set |
US7394645B2 (en) | 2005-07-26 | 2008-07-01 | Kyocera Corporation | Multilayer capacitor |
US7599166B2 (en) | 2005-11-17 | 2009-10-06 | Samsung Electro-Mechanics Co., Ltd. | Multilayer chip capacitor |
US9685272B2 (en) | 2014-02-27 | 2017-06-20 | Samsung Electro-Mechanics Co., Ltd. | Multilayer ceramic capacitor having multilayer external electrodes and board having the same |
KR20180114912A (en) * | 2016-03-07 | 2018-10-19 | 에이브이엑스 코포레이션 | Multilayer electronic device |
EP3683813A4 (en) * | 2018-10-26 | 2021-04-21 | KYOCERA Corporation | Film capacitor, connection-type capacitor, and inverter and electric vehicle in which said capacitors are used |
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US6636406B1 (en) | 1997-04-08 | 2003-10-21 | X2Y Attenuators, Llc | Universal multi-functional common conductive shield structure for electrical circuitry and energy conditioning |
US6606011B2 (en) | 1998-04-07 | 2003-08-12 | X2Y Attenuators, Llc | Energy conditioning circuit assembly |
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US6995983B1 (en) | 1997-04-08 | 2006-02-07 | X2Y Attenuators, Llc | Component carrier |
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US6687108B1 (en) | 1997-04-08 | 2004-02-03 | X2Y Attenuators, Llc | Passive electrostatic shielding structure for electrical circuitry and energy conditioning with outer partial shielded energy pathways |
US7321485B2 (en) | 1997-04-08 | 2008-01-22 | X2Y Attenuators, Llc | Arrangement for energy conditioning |
US6018448A (en) | 1997-04-08 | 2000-01-25 | X2Y Attenuators, L.L.C. | Paired multi-layered dielectric independent passive component architecture resulting in differential and common mode filtering with surge protection in one integrated package |
US6580595B2 (en) * | 1997-04-08 | 2003-06-17 | X2Y Attenuators, Llc | Predetermined symmetrically balanced amalgam with complementary paired portions comprising shielding electrodes and shielded electrodes and other predetermined element portions for symmetrically balanced and complementary energy portion conditioning |
US6498710B1 (en) | 1997-04-08 | 2002-12-24 | X2Y Attenuators, Llc | Paired multi-layered dielectric independent passive component architecture resulting in differential and common mode filtering with surge protection in one integrated package |
US6738249B1 (en) | 1997-04-08 | 2004-05-18 | X2Y Attenuators, Llc | Universal energy conditioning interposer with circuit architecture |
US6373673B1 (en) | 1997-04-08 | 2002-04-16 | X2Y Attenuators, Llc | Multi-functional energy conditioner |
US20030161086A1 (en) * | 2000-07-18 | 2003-08-28 | X2Y Attenuators, Llc | Paired multi-layered dielectric independent passive component architecture resulting in differential and common mode filtering with surge protection in one integrated package |
US7301748B2 (en) | 1997-04-08 | 2007-11-27 | Anthony Anthony A | Universal energy conditioning interposer with circuit architecture |
US7274549B2 (en) * | 2000-12-15 | 2007-09-25 | X2Y Attenuators, Llc | Energy pathway arrangements for energy conditioning |
US6603646B2 (en) | 1997-04-08 | 2003-08-05 | X2Y Attenuators, Llc | Multi-functional energy conditioner |
US6650525B2 (en) | 1997-04-08 | 2003-11-18 | X2Y Attenuators, Llc | Component carrier |
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- 1998-05-14 AU AU73871/98A patent/AU7387198A/en not_active Abandoned
- 1998-05-14 EP EP98921208A patent/EP0995207A1/en not_active Withdrawn
- 1998-05-14 WO PCT/US1998/009873 patent/WO1999000807A1/en not_active Application Discontinuation
- 1998-05-14 KR KR1019997012280A patent/KR20010020511A/en not_active Application Discontinuation
- 1998-05-14 CN CN98806558A patent/CN1261457A/en active Pending
- 1998-05-14 JP JP50553299A patent/JP2002508114A/en active Pending
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- 1999-03-08 US US09/264,124 patent/US6243253B1/en not_active Expired - Lifetime
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Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0915488A2 (en) * | 1997-11-10 | 1999-05-12 | Murata Manufacturing Co., Ltd. | Multilayer capacitor |
EP1087411A2 (en) * | 1997-11-10 | 2001-03-28 | Murata Manufacturing Co., Ltd. | Multilayer capacitor |
EP1087411A3 (en) * | 1997-11-10 | 2005-02-09 | Murata Manufacturing Co., Ltd. | Multilayer capacitor |
EP1085539A3 (en) * | 1997-11-10 | 2005-02-09 | Murata Manufacturing Co., Ltd. | Multilayer capacitor |
EP0915488B1 (en) * | 1997-11-10 | 2005-07-20 | Murata Manufacturing Co., Ltd. | Multilayer capacitor |
CN1312949C (en) * | 2000-07-21 | 2007-04-25 | 皇家菲利浦电子有限公司 | Mobile telephone set |
US7394645B2 (en) | 2005-07-26 | 2008-07-01 | Kyocera Corporation | Multilayer capacitor |
US7599166B2 (en) | 2005-11-17 | 2009-10-06 | Samsung Electro-Mechanics Co., Ltd. | Multilayer chip capacitor |
US9685272B2 (en) | 2014-02-27 | 2017-06-20 | Samsung Electro-Mechanics Co., Ltd. | Multilayer ceramic capacitor having multilayer external electrodes and board having the same |
KR20180114912A (en) * | 2016-03-07 | 2018-10-19 | 에이브이엑스 코포레이션 | Multilayer electronic device |
EP3427278A4 (en) * | 2016-03-07 | 2019-10-30 | AVX Corporation | Multi-layer electronic device |
US10622438B2 (en) | 2016-03-07 | 2020-04-14 | Avx Corporation | Multi-layer electronic device |
KR102432308B1 (en) * | 2016-03-07 | 2022-08-12 | 교세라 에이브이엑스 컴포넌츠 코포레이션 | multilayer electronic device |
EP3683813A4 (en) * | 2018-10-26 | 2021-04-21 | KYOCERA Corporation | Film capacitor, connection-type capacitor, and inverter and electric vehicle in which said capacitors are used |
US11232906B2 (en) | 2018-10-26 | 2022-01-25 | Kyocera Corporation | Film capacitor, combination type capacitor, and inverter and electric vehicle employing the same |
Also Published As
Publication number | Publication date |
---|---|
KR20010020511A (en) | 2001-03-15 |
AU7387198A (en) | 1999-01-19 |
US6243253B1 (en) | 2001-06-05 |
EP0995207A1 (en) | 2000-04-26 |
JP2002508114A (en) | 2002-03-12 |
CN1261457A (en) | 2000-07-26 |
US5880925A (en) | 1999-03-09 |
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