WO2002096588A1 - Composant, son procede de production et son utilisation - Google Patents

Composant, son procede de production et son utilisation Download PDF

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Publication number
WO2002096588A1
WO2002096588A1 PCT/DE2001/002003 DE0102003W WO02096588A1 WO 2002096588 A1 WO2002096588 A1 WO 2002096588A1 DE 0102003 W DE0102003 W DE 0102003W WO 02096588 A1 WO02096588 A1 WO 02096588A1
Authority
WO
WIPO (PCT)
Prior art keywords
component
component according
layer
protective layer
base body
Prior art date
Application number
PCT/DE2001/002003
Other languages
German (de)
English (en)
Inventor
Reinhold Flaschberger
Harald SCHÖPF
Michael Marchl
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
Priority to PCT/DE2001/002003 priority Critical patent/WO2002096588A1/fr
Publication of WO2002096588A1 publication Critical patent/WO2002096588A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/46—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates
    • C04B35/462—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates
    • C04B35/465—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates
    • C04B35/468—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B18/00—Layered products essentially comprising ceramics, e.g. refractory products
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • 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
    • H01C1/1406—Terminals or electrodes formed on resistive elements having positive 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
    • H01C1/144—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors the terminals or tapping points being welded or soldered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/36—Electric or electronic devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2311/00—Metals, their alloys or their compounds
    • B32B2311/02—Noble metals
    • B32B2311/08—Silver
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3215—Barium oxides or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
    • C04B2235/3225—Yttrium oxide or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
    • C04B2235/3234—Titanates, not containing zirconia
    • C04B2235/3236—Alkaline earth titanates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3262—Manganese oxides, manganates, rhenium oxides or oxide-forming salts thereof, e.g. MnO
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/94—Products characterised by their shape
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
    • C04B2237/12—Metallic interlayers
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/40—Metallic
    • C04B2237/403—Refractory metals
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/40—Metallic
    • C04B2237/405—Iron metal group, e.g. Co or Ni
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/40—Metallic
    • C04B2237/408—Noble metals, e.g. palladium, platina or silver
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/70—Forming laminates or joined articles comprising layers of a specific, unusual thickness
    • C04B2237/706—Forming laminates or joined articles comprising layers of a specific, unusual thickness of one or more of the metallic layers or articles

Definitions

  • the invention relates to a component which has a coating containing organic solvents, with a base body made of ceramic material, which has at least one surface which is covered with a solderable layer and on which a contact element is soldered.
  • the invention further relates to a method for producing the component.
  • the invention relates to the use of the component.
  • the ceramic material contains barium titanate and which are used as PTC resistors.
  • PTC resistors are suitable, among other things, for use in motor protection circuits to protect against overload. It is particularly desirable that the PTC resistors have stable component properties over their entire service life, if possible.
  • a special characteristic of the PTC resistor is its electrical resistance. Thus, the best possible resistance stability of the PTC resistor is required.
  • the known components have the disadvantage that the organic solvents present in the casing can penetrate into the base body. Since organic solvents contain a high proportion of hydrogen, they have a reducing effect. They develop this reducing effect when penetrating into the ceramic base body and thus cause a change in the material. In particular, they remove oxygen. This results in a change in the electrical resistance of the component, which progresses as the component's lifespan increases. For example, known components have a relative Resistance change of 10 to 20% after a service life of a thousand hours. In extreme cases, the penetration of the organic solvents into the basic body of the component can even lead to the formation of so-called ionization channels, which in practice represent a short circuit. If such a component is now connected to an external voltage source, this can lead to thermal destruction of the component.
  • the aim of the present invention is therefore to provide a component with improved resistance stability.
  • the invention specifies a component which has a base body made of ceramic material.
  • Ceramic material is to be understood in particular as metal oxides, such as barium titanate or aluminum oxide.
  • the base body has at least one surface that is covered with a protective layer.
  • the protective layer prevents the diffusion of organic solvents. However, not the entire surface is covered with the protective layer, but a soldering surface is left out. This soldering surface is covered with a solderable layer, on the surface of which a contact element is soldered. This contact element conducts the electrical current over the soldering surface to the component.
  • the component has an envelope which contains organic solvents.
  • the diffusion of the organic solvents is at least hindered, if not completely prevented. This avoids a chemical change in the ceramic material, which improves the resistance stability of the component.
  • a component in which the base body has the shape of a cylinder is particularly advantageous. Such components are very easy to manufacture from ceramic material by pressing and sintering ceramic powder.
  • soldering surface is a circular surface concentric with the base surface of the cylinder. With a fixed orientation of the cylinder axis, such a soldering surface enables easy positioning of the contact element and subsequent soldering of the contact element regardless of the angle of rotation of the cylinder.
  • soldering surface is synonymous with the fact that the base of the cylinder is covered by the protective layer only along a circular ring at the edge of the base.
  • the protective layer is limited to the particularly critical area, namely the edge of the cylinder. This causes savings
  • the edge of the cylinder is particularly critical because here the organic solvents can penetrate into the base body both from the base surfaces of the cylinder and from its curved edge surface, as a result of which the problem of the chemical change in the ceramic material is particularly serious.
  • a component is particularly advantageous in which the ceramic material is barium titanate (BaTi ⁇ 3 ), which additionally contains additions with a total weight fraction of less than 10%. These additions can be calcium, strontium and / or lead. These admixtures make the component suitable as a PTC resistor. Furthermore, the component can particularly advantageously contain dopants, such as yttrium or manganese, the total weight fraction of the dopants being less than 1%. is. Such a component is particularly suitable as a PTC resistor.
  • a component in which the protective layer is an electrically conductive layer is particularly advantageous.
  • Such a protective layer has the advantage that it is possible for the electrical current flowing through the contact element to also flow into the ceramic material via the part of the surface not covered with the solderable layer, as a result of which a good distribution of the electrical current within the component is possible is.
  • Such a protective layer can be, for example, a silver-containing layer applied in screen printing, which has the advantage that it is easy to produce and at the same time represents a good diffusion barrier for organic solvents.
  • a protective layer can be carried out in aluminum instead of silver, or to use flame spraying, for example, as a method for applying the protective layer instead of screen printing.
  • a component in which the solderable layer covers the protective layer is particularly advantageous.
  • Such a component has the advantage that the protective layer can be applied particularly easily to the surface of the base body, since the solderable layer covers the entire surface of the base body and thus there is no need to pay attention to the shape of the solderable layer.
  • such a component has the advantage that the electrical field emanating from the solderable layer connected to the contact element can be distributed homogeneously over the base body of the component, since the entire surface of the base body is electrically contacted with the contact element.
  • this also results in Advantage that the current flowing through the component can be distributed largely homogeneously over the base body.
  • the solderable layer is a sputtered silver layer.
  • a sputtered silver layer is particularly easy to apply and has good solderability for what is to be soldered on.
  • a component is particularly advantageous in which the covering is a hardened lacquer which contains residual components of organic solvents.
  • Such a covering can be produced particularly simply and inexpensively, the remaining constituents of organic solvents not being able to impair the resistance stability of the component, since the component according to the invention is equipped with a protective layer which hinders the diffusion of organic solvents.
  • the concept according to the invention is particularly advantageous for the component mentioned.
  • the invention specifies a method for producing a component in which the protective layer is applied to the surface of the base body as a screen printing paste and cured at 500 to 700 ° C.
  • the solderable layer is then sputtered on, for example as a silver layer.
  • the method according to the invention for producing the component is particularly advantageous because if the layers were applied in reverse order, the solderability of an existing solderable layer would be impaired by the high temperatures. Therefore, the sequence according to the invention for applying the protective or solderable layer is particularly advantageous.
  • the invention provides the use of the component according to the invention as a PTC resistor Overload protection circuits.
  • the component according to the invention is particularly good as a PTC resistor in
  • Overload protection circuits are suitable, since these circuits are in use over long periods of time and therefore good temporal stability of the components forming the circuit is required.
  • the figure shows a component according to the invention in a schematic cross section.
  • the figure shows a component according to the invention with a base body 1 made of ceramic material.
  • the ceramic material can be selected as barium titanate with admixtures of calcium, strontium and lead as well as with doping of yttrium and manganese.
  • the base body 1 has the shape of a flat cylinder, which has a height of approximately 2.5 mm and a diameter of approximately 16 to 20 mm.
  • a protective layer 3 on each of the base and / or surface of the cylinder which in the example shown in the figure is designed as a silver-containing screen printing electrode.
  • the silver-containing screen printing electrode has poor solderability and a thickness of approximately 10 ⁇ m. It does not cover the entire base or cover surface of the base body 1, but a soldering surface 2 in the form of a circle which is concentric with the base or cover surface of the cylinder is omitted.
  • soldering area 2 is, for example, 5 mm 2 .
  • the soldering surface 2 or the protective layers 3 are covered with a solderable layer 4.
  • This solderable layer 4 is a layer stack, beginning on the inside with a chrome layer, an overlying nickel layer and one built up to the outside closing silver layer.
  • the layer stack is produced by sputtering the individual partial layers and has a layer thickness of approximately 1 ⁇ m.
  • the chrome layer lying directly on the base body has the task of breaking down the barrier layer existing between the metallic solderable layer 4 and that of the semiconducting ceramic of the base body 1 (Schottky contact).
  • the nickel layer above the chrome layer is the actual solder layer and also prevents it
  • the silver layer arranged over the nickel layer has the task of improving the current carrying capacity for the current transported by the contact element connected to the solderable layer 4.
  • a contact element 5 is soldered onto the solderable layers 4 by means of solder 7.
  • the contact element can be, for example, a copper wire with a 1 mm diameter.
  • Lot 7 preferably uses lead.
  • the entire component is encased by a covering 6, which is preferably designed as a silicone-containing, high-temperature-resistant lacquer. In the cured state, this lacquer has a layer thickness of approximately 0.1 ⁇ m and envelops the entire component. Only the contact elements 5 protrude through the paint.
  • the component according to the invention shown by way of example in the figure, can, for example, last for one thousand hours

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Thermistors And Varistors (AREA)

Abstract

L'invention concerne un composant qui comprend un corps de base (1) constitué d'un matériau céramique et présentant au moins une surface recouverte au moins partiellement, une surface de brasage (2) étant ménagée, d'une couche protectrice (3) empêchant la diffusion de solvants organiques. La surface de brasage (2) est recouverte d'une couche brasable (4) à la surface de laquelle un élément de contact (5) est monté par brasage. Le composant selon l'invention comprend également une enveloppe (6) contenant des solvants organiques. L'invention concerne en outre un procédé pour la production d'un tel composant, ainsi que l'utilisation de ce composant comme résistance CTP dans des circuits de protection contre les surcharges. Le composant selon l'invention améliore la stabilité de stockage de tension.
PCT/DE2001/002003 2001-05-28 2001-05-28 Composant, son procede de production et son utilisation WO2002096588A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/DE2001/002003 WO2002096588A1 (fr) 2001-05-28 2001-05-28 Composant, son procede de production et son utilisation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE2001/002003 WO2002096588A1 (fr) 2001-05-28 2001-05-28 Composant, son procede de production et son utilisation

Publications (1)

Publication Number Publication Date
WO2002096588A1 true WO2002096588A1 (fr) 2002-12-05

Family

ID=5648248

Family Applications (1)

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PCT/DE2001/002003 WO2002096588A1 (fr) 2001-05-28 2001-05-28 Composant, son procede de production et son utilisation

Country Status (1)

Country Link
WO (1) WO2002096588A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3638342A1 (de) * 1986-11-10 1988-05-19 Siemens Ag Elektrisches bauelement aus keramik mit mehrlagenmetallisierung und verfahren zu seiner herstellung
DE19953594A1 (de) * 1998-11-20 2000-05-25 Matsushita Electric Ind Co Ltd Oberflächenmontierte elektronische Komponente
WO2001086664A1 (fr) * 2000-05-09 2001-11-15 Epcos Ag Composant, son procede de realisation et son utilisation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3638342A1 (de) * 1986-11-10 1988-05-19 Siemens Ag Elektrisches bauelement aus keramik mit mehrlagenmetallisierung und verfahren zu seiner herstellung
DE19953594A1 (de) * 1998-11-20 2000-05-25 Matsushita Electric Ind Co Ltd Oberflächenmontierte elektronische Komponente
WO2001086664A1 (fr) * 2000-05-09 2001-11-15 Epcos Ag Composant, son procede de realisation et son utilisation

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