EP2614508A2 - Composant résistance et procédé de fabrication d'un composant résistance - Google Patents

Composant résistance et procédé de fabrication d'un composant résistance

Info

Publication number
EP2614508A2
EP2614508A2 EP11757222.2A EP11757222A EP2614508A2 EP 2614508 A2 EP2614508 A2 EP 2614508A2 EP 11757222 A EP11757222 A EP 11757222A EP 2614508 A2 EP2614508 A2 EP 2614508A2
Authority
EP
European Patent Office
Prior art keywords
electrodes
type
inner electrodes
inner electrode
electrode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP11757222.2A
Other languages
German (de)
English (en)
Other versions
EP2614508B1 (fr
Inventor
Franz Rinner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TDK Electronics AG
Original Assignee
Epcos AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Epcos AG filed Critical Epcos AG
Publication of EP2614508A2 publication Critical patent/EP2614508A2/fr
Application granted granted Critical
Publication of EP2614508B1 publication Critical patent/EP2614508B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/18—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material comprising a plurality of layers stacked between terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
    • H01C1/1413—Terminals or electrodes formed on resistive elements having negative temperature coefficient
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
    • H01C1/146—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors the resistive element surrounding the terminal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/008—Thermistors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/04—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient
    • H01C7/041—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient formed as one or more layers or coatings
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49082—Resistor making

Definitions

  • a resistance element having a stack of Kera ⁇ mix layers and internal electrodes arranged in between.
  • external contacts can be attached to the outside of the stack.
  • Such resistance components can be designed, for example, as NTC thermistors and are used, for example, for temperature measurement.
  • a resistance component with a main body is specified, which comprises a stack of ceramic layers and internal electrodes arranged therebetween.
  • Resistor component has a first and a second
  • the external contacts are preferably arranged on two opposite ⁇ opposite side surfaces of the component.
  • the external contact is made by immersing the device in a conductive paste and therefore may have capped areas.
  • the outer contacts then lie across edges on several side surfaces of the body and the caps represent the edge-spanning areas of
  • the resistance component has internal electrodes of a first type, which are connected to the first external contact
  • the resistance component has internal electrodes of a second type, which are electrically conductively connected to the second external contact. Both the inner electrodes of the first kind and the inner electrodes of the second kind are preferably arranged in the form of a stack.
  • the inner electrodes of the first kind are arranged without overlapping of the inner electrodes of the second kind.
  • a gap is formed between the inner electrodes of the first grade and the inner electrodes of the second type, wherein a current flowing from the first outer contact to the second outer contact is separated from the inner electrodes of the first type via the ceramic
  • Layers can flow to the inner electrodes of the second kind.
  • the gap is bounded on two sides respectively by edges of the inner electrodes of the first grade and of the second type, wherein edges are the ends of the inner electrodes, which point in the direction of the opposite inner electrodes.
  • the electrical properties of the resistance component can be selectively changed. For example, a reduction in the gap between the internal electrodes of the first grade and the inner electrodes of the second variety, a reduction in the resistance of the device.
  • the resistance component has at least one inner electrode of a third type, which is electrically connected to neither the first nor the second external contact.
  • the inner electrode of the third kind overlaps at least partially with the inner electrodes of the first kind and the inner electrodes of the second kind.
  • a current flowing from the first external contact to the second external contact can flow from the first external contact via the inner electrodes of the first kind, via the ceramic layers and via the inner electrode of the third kind and the ceramic layers to the inner electrodes of the second kind and to the second outer contact ,
  • the electrical properties of the resistance component such as
  • the resistance of the device to be targeted.
  • each inner electrode of the third kind at least three inner electrodes of the first kind and three inner electrodes of the second kind are provided.
  • a first inner electrode of the third kind at least three inner electrodes of the first kind and three inner electrodes of the second kind are provided.
  • a second portion of the current flows from the first external contact over the surfaces of the first-type inner electrodes and across the surface of the third-type inner electrode to the surfaces of the second-type inner electrodes and the second outer-contact.
  • the first portion of the current is direct without passing over the inner electrode of the third type from the inner electrodes of the first kind across the gap to the inner electrodes of the second type flows, compared to the second portion of the current, via the
  • the inner electrode of the third type preferably has a substantially equal distance to two opposite side surfaces of the component.
  • the inner electrode of the third kind to a
  • Side surface of the device have a distance which differs from the distance of the inner electrode of the third variety to the opposite side surface by less than or equal to 10 ⁇ .
  • all inner electrodes of the first type to the respective opposite internal electrodes of the second type have a substantially equal spacing, whereby is meant by distance, the lateral distance from an edge of an inner ⁇ electrode of the first kind to an edge of an opposing inner electrode of the second kind. Since all inner electrodes of the first type have a substantially equal distance to the respectively opposite inner electrodes of the second type, a gap whose size is constant results between the inner electrodes of the first type and the inner electrodes of the second type.
  • the second type of function as shield electrodes for shielding the remaining inner electrodes of areas of the external contacts a first and a second internal electrode of the first type and a first and a second internal electric ⁇ de.
  • the shielding takes place, in particular, with regard to the caps of the outer contacts, that is to say that undesirable effects of the cap-shaped, edge-overlapping regions of the external contacts on the electrical properties of the resistance component can be minimized.
  • two inner electrodes of the first type and two inner electrodes of the second type can be arranged above the inner electrode of the third type.
  • On the other side of the inner electrode of the third variety can also be two inner electrodes of the first kind and two inner electrodes of the second sort below the
  • the resistance component is symmetrical with respect to the inner electrode of the third kind.
  • the device is symmetrical to three mutually perpendicular planes. This means that three levels can be assigned to the resistance component, which are perpendicular to one another and to which the component is symmetrical.
  • the resistance component has exactly one inner electrode of the third type and at least three inner electrodes of the first and second types.
  • the inner electrodes of the first kind and the inner electrodes of the second kind all have an equal length, which corresponds essentially to half the length of the inner electrode of the third kind.
  • the inner electrodes of the first, second and third varieties have an im
  • Base body protrude, correspond.
  • the inner electrodes of the first kind and the inner electrodes of the second kind are all the same
  • Inner electrode of the third kind corresponds.
  • the resistance component has the shape of a cuboid with a length 1, a width b and a height h.
  • the electrical resistance R25 of the device at a nominal temperature of 25 ° C for the resistivity p of the ceramic layers, the length 1, width b and height h of the device, the mathematical relationship applies:
  • the width b of the component corresponds to
  • each inner electrode has a substantially equal spacing from the inner electrode closest in the stacking direction.
  • the inner electrodes of the first type and the second type are in Stacking direction adjacent inner electrodes different distances.
  • the above-Resist ⁇ stand device at an NTC thermistor that is a resistance element having a negative Temperaturko ⁇ efficient.
  • NTC thermistor the current flowing through the ceramic layers is better conducted at high temperatures than at low temperatures, which is why such a resistance device is also used as a thermistor
  • the internal electrodes are applied to a ceramic green sheet by a printing method using a conductive paste.
  • the inner ⁇ electrodes is the same for all internal electrodes
  • Printing mask used. By using only one printing mask, the manufacturing process of a resistance component described here can be considerably simplified.
  • the at least one inner electrode of the third kind is applied offset by half the length of the component to the inner electrodes of the first grade and to the inner electrodes of the second grade.
  • FIGS. 2 and 3 are plan views of different layers of a resistance component according to the invention.
  • Figures 4 and 5 are cross-sections of further embodiments of a resistance component according to the invention.
  • FIG. 1 shows a cross section of a resistance component 1 with a main body 8, which comprises ceramic layers 2 and various internal electrodes 5, 6, 70.
  • the resistance component 1 has on two opposite side ⁇ surfaces 91, 92 of the base body 8, a first and a second cap-shaped outer contact 3, 4.
  • four internal electrodes 5 of a first type are electrically conductive with the first external contact 3 and four internal electrodes 6 of a second type are electrically conductive with the second
  • Base 8 of the resistance component 1 a Certainlyelek ⁇ electrode 70 of a third kind, which is electrically connected to neither the first 3 nor the second 4 technicallytitle ist.
  • Internal electrodes 5 of the first kind and those with the second External contact 4 connected internal electrodes 6 of the second variety are each in pairs opposite. This means that in each case an inner electrode 51, 52, 53, 54 of the first kind and an inner electrode 61, 62, 63, 64 of the second kind in a same imaginary horizontal
  • Main body 8 is arranged.
  • the inner electrodes 5 of the first kind and the inner electrodes 6 of the second kind are spaced apart from each other, that is, the second kind of inner electrodes 5 are spaced apart from each other. they do not touch and have no overlap. Thus, a gap is formed between the inner electrodes 5 of the first kind and the inner electrodes 6 of the second kind.
  • both the inner electrodes 5 of the first kind and the inner electrodes 6 of the second kind overlap with the inner electrode 70 of the third kind arranged centrally in the main body 8.
  • Inner electrodes 51, 53 of the first kind and two inner electrodes 61, 63 of the second kind are arranged above the inner electrode 70 of the third kind.
  • two inner electrodes 52, 54 of the first kind and two inner electrodes 62, 64 of the second kind are disposed below the inner electrode 70 of the third kind.
  • the inner electrode 70 of the third type preferably has the same spacing for the first 3 and the second 4 external contacting.
  • the internal electrodes 51, 52, 61, 62 can additionally by their arrangement at the outer edge of the main body 8 as
  • Shielding electrodes act by shielding the remaining internal electrodes from the influence of the cap-shaped outer contacts 3, 4. In particular, there is a shielding of the areas of the external contacts 3, 4, which the
  • Cover side surfaces 95 and 96 at least partially and are approximately parallel to the internal electrodes 5, 6, 70.
  • the inner electrode 70 of the third variety is in each case opposite to two
  • each inner electrode has the same distance to the closest inner electrode in the vertical direction, that is, the inner electrodes are equally spaced.
  • the resistance device 1 is formed symmetrically with respect to the inner electrode 70 of the third kind. Furthermore, the component 1 is symmetrical to three mutually perpendicular planes. In other words, the resistor component 1 can be assigned three levels which are perpendicular to one another and to which the component is symmetrical.
  • a resistance component according to FIG. 1 is preferably an NTC thermistor component.
  • the device has, for example, a height of 750 ⁇ , a width of 750 ⁇ and a length of 1520 ⁇ on.
  • the ceramic layers 2 have, for example, a specific resistance of 24.3 Gm and the electrical resistance R25 of the device in a
  • Nominal temperature of 25 ° C is 10 kü.
  • the arranged in the middle of the component inner electrode 70 of the third variety is for example 390 ⁇ wide and 1084 ⁇ long.
  • Base body 8 of the component projecting internal electrodes 5, 6 of the first and second varieties are 390 ⁇ wide and 524 ⁇ long.
  • the gap between the inner electrodes 5 of the first type and the inner electrodes 6 of the second type is 436 ⁇ large.
  • the internal electrodes have a distance of 125 ⁇ to the internal electrodes closest in the stacking direction.
  • the distance between the first external contact 3 to the second external contact 4 is 920 ⁇ .
  • a glazing is located above the component.
  • External contacts 3, 4 in this embodiment have no direct contact with the ceramic layers 2, since the glazing is arranged between the external contacts 3, 4 and the ceramic layers 2. This makes it possible to reduce unwanted influences of the external contacts 3, 4 on the electrical properties of the component, in particular unwanted influences of the cap-shaped
  • FIG. 2 shows a plan view of the resistance component 1 according to the invention according to FIG. 1, the section through the plane i being shown here.
  • the inner electrode 70 of the third kind is rectangular.
  • the inner electrode ⁇ de 70 of the third variety has two opposite side surfaces 91 and 92 and 93 and 94 of the component 1 each have the same distance c or d.
  • the inner electrode 70 of the third variety is for example 390 ⁇ wide and 1084 ⁇ long.
  • FIG. 3 shows a further plan view of the component 1 according to the invention according to FIG. 1.
  • the section through plane ii is shown.
  • the inner electrode 52 of the first kind is electrically conductive with the outer contact 3
  • the inner electrode 62 of the second kind is electrically conductively connected to the second outer contact 4.
  • the two internal electrodes 52 and 62 are
  • all internal electrodes 5 of the first type have the same distance e from the respectively opposite internal electrodes 6 of the second type.
  • the distance e is twice the distance 2c of the central inner electrode 70 to the side surface 91 or 92 of the resistance component 1 corresponds. This becomes clear below in connection with the printing of the internal electrodes during the production of a component according to the invention.
  • 2 and 3 corresponds to the width of the two internal electrodes 53 and 63 with a width of, for example, 390 ⁇ the width of réelleelek ⁇ trode the first grade.
  • the length of the inner electrodes 5 of the first kind preferably corresponds to the length of the inner electrodes 6 of the second kind.
  • the inner electrodes 5 of the first grade and the inner electric ⁇ 6 of the second variety are each spaced differently.
  • the inner electrodes 51, 52 of the first type and 61, 62 of the second type have a relatively large distance f to the vertically adjacent inner electrodes 53, 54 and 63, 64.
  • the inner electrodes 53, 54 of the first kind and 63, 64 of the second kind have a relatively small distance h from the inner electrode 70 of the third kind. Due to the changed spacing of the internal electrodes, for example, the electrical resistance R25 of the component 1 can be varied at a nominal temperature of 25 ° C.
  • FIG. 5 shows a further embodiment in which, between the first 51 and the third 53 inner electrode of the first kind, between the second 52 and the fourth 54
  • Inner electrode of the first kind, between the first 61 and third 63 inner electrode of the second kind and between the second 62 and fourth 64 inner electrode of the second kind each having a further inner electrode 55, 56, 65, 66 is arranged.
  • the resistance component 1 according to FIG. 5, in turn, can be assigned three mutually perpendicular planes, to which the component 1 is symmetrical.
  • the distance n, ie the respective distance of the internal electrodes 53, 54, 63, 64 to the internal electrodes 55, 56, 65, 66, is 150 ⁇ .
  • Electrode 70 are each 75 ⁇ .
  • Nominal temperature of 25 ° C can be varied or adapted to different ceramic materials.
  • the invention is not limited to this by the description with reference to the embodiments, but includes each new feature and any combination of features. This includes in particular any combination of features in the claims, even if this feature or these

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermistors And Varistors (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)

Abstract

L'invention concerne un composant résistance (1) comportant un empilement de couches céramiques (2) et d'électrodes intérieures (5, 6, 70), les électrodes intérieures (5) d'un premier type étant connectées électriquement à un premier contact extérieur (3) et les électrodes intérieures (6) d'un deuxième type étant connectées électriquement à un deuxième contact extérieur (4). Les électrodes intérieures (5) du premier type sont disposées de manière à ne pas chevaucher les électrodes intérieures (6) du deuxième type. Une électrode intérieure (70) d'un troisième type n'étant connectée électriquement ni au premier (3) ni au deuxième contact extérieur (4), chevauche au moins partiellement les électrodes intérieures (5) du premier type et les électrodes intérieures (6) du deuxième type. Pour chaque électrode intérieure (70) du troisième type, au moins trois électrodes intérieures (5) du premier type et au moins trois électrodes intérieures (6) du deuxième type sont prévues. L'invention concerne également un procédé de fabrication d'un composant résistance (1).
EP11757222.2A 2010-09-09 2011-08-31 Composant résistance et procédé de fabrication d'un composant résistance Active EP2614508B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010044856A DE102010044856A1 (de) 2010-09-09 2010-09-09 Widerstandsbauelement und Verfahren zur Herstellung eines Widerstandsbauelements
PCT/EP2011/065047 WO2012031963A2 (fr) 2010-09-09 2011-08-31 Composant résistance et procédé de fabrication d'un composant résistance

Publications (2)

Publication Number Publication Date
EP2614508A2 true EP2614508A2 (fr) 2013-07-17
EP2614508B1 EP2614508B1 (fr) 2018-10-03

Family

ID=44651703

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11757222.2A Active EP2614508B1 (fr) 2010-09-09 2011-08-31 Composant résistance et procédé de fabrication d'un composant résistance

Country Status (6)

Country Link
US (1) US8947193B2 (fr)
EP (1) EP2614508B1 (fr)
JP (1) JP2013539605A (fr)
CN (1) CN103081033B (fr)
DE (1) DE102010044856A1 (fr)
WO (1) WO2012031963A2 (fr)

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DE102011014967B4 (de) * 2011-03-24 2015-04-16 Epcos Ag Elektrisches Vielschichtbauelement
DE102014107450A1 (de) * 2014-05-27 2015-12-03 Epcos Ag Elektronisches Bauelement
JP6418246B2 (ja) * 2014-11-07 2018-11-07 株式会社村田製作所 サーミスタ素子
DE102015116278A1 (de) * 2015-09-25 2017-03-30 Epcos Ag Überspannungsschutzbauelement und Verfahren zur Herstellung eines Überspannungsschutzbauelements
DE102015121982A1 (de) * 2015-12-16 2017-06-22 Epcos Ag NTC-Keramik, elektronisches Bauelement zur Einschaltstrombegrenzung und Verfahren zur Herstellung eines elektronischen Bauelements
WO2020018746A1 (fr) * 2018-07-18 2020-01-23 Hubbell Incorporated Dispositif de résistance dépendant de la tension pour protéger une pluralité de conducteurs contre une surtension
DE102019105116A1 (de) * 2019-02-28 2020-09-03 Tdk Electronics Ag Bauelement
JP2022535818A (ja) * 2019-06-03 2022-08-10 テーデーカー エレクトロニクス アーゲー コンポーネント及びコンポーネントの使用方法
JP2021057556A (ja) * 2019-10-02 2021-04-08 Tdk株式会社 Ｎｔｃサーミスタ素子
JP7434863B2 (ja) * 2019-12-06 2024-02-21 Tdk株式会社 Ｎｔｃサーミスタ素子
JP7322793B2 (ja) * 2020-04-16 2023-08-08 Tdk株式会社 チップバリスタの製造方法及びチップバリスタ

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JPH08279437A (ja) * 1995-04-06 1996-10-22 Mitsubishi Materials Corp チップ型積層セラミックスコンデンサ
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JPH11191506A (ja) 1997-12-25 1999-07-13 Murata Mfg Co Ltd 積層型バリスタ
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JP3440883B2 (ja) * 1999-06-10 2003-08-25 株式会社村田製作所 チップ型負特性サーミスタ
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Also Published As

Publication number Publication date
WO2012031963A3 (fr) 2012-09-07
CN103081033B (zh) 2016-02-24
US20130207770A1 (en) 2013-08-15
EP2614508B1 (fr) 2018-10-03
US8947193B2 (en) 2015-02-03
DE102010044856A1 (de) 2012-03-15
CN103081033A (zh) 2013-05-01
WO2012031963A2 (fr) 2012-03-15
JP2013539605A (ja) 2013-10-24

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