DE19729184A1 - Electrical varistor component - Google Patents

Electrical varistor component

Info

Publication number
DE19729184A1
DE19729184A1 DE1997129184 DE19729184A DE19729184A1 DE 19729184 A1 DE19729184 A1 DE 19729184A1 DE 1997129184 DE1997129184 DE 1997129184 DE 19729184 A DE19729184 A DE 19729184A DE 19729184 A1 DE19729184 A1 DE 19729184A1
Authority
DE
Germany
Prior art keywords
component
electrical
component body
terminal
free
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.)
Withdrawn
Application number
DE1997129184
Other languages
German (de)
Inventor
Johannes Zach
Gerhard Dr Schoener
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
Siemens Matsushita Components GmbH and Co KG
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 Siemens Matsushita Components GmbH and Co KG filed Critical Siemens Matsushita Components GmbH and Co KG
Priority to DE1997129184 priority Critical patent/DE19729184A1/en
Publication of DE19729184A1 publication Critical patent/DE19729184A1/en
Withdrawn legal-status Critical Current

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
    • H01C7/10—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 voltage responsive, i.e. varistors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
    • H01C1/034—Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being formed as coating or mould without outer sheath
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)

Abstract

The electrical component includes a component body (1) defining the component function, with terminal metallisations (2) on opposite surface faces of the component body which allow free-edges on the metallisation-free surface faces carrying them. Contact wires (3) are present on the terminal metallisations (2) for an electrical external connection. At the free-edges (4-1), over which the contact wires extend to the outer most component, the wire spacing (a) from the component body is greater than the thickness of the terminal metallisations.

Description

Die vorliegende Erfindung betrifft ein elektrisches Bauele­ ment, insbesondere einen Energievaristor nach dem Oberbegriff des Patentanspruchs 1.The present invention relates to an electrical component ment, in particular an energy varistor according to the generic term of claim 1.

Elektrische Bauelemente in Form von Energievaristoren sind beispielsweise aus dem Datenbuch der Anmelderin SIOV-Metalloxid-Varistoren, 1992, Seiten 169 und 170 bekannt. Der­ artige Energievaristoren, deren Aufbau generell in Fig. 1 dargestellt ist, bestehen aus einem Varistorkörper 1 mit An­ schlußmetallisierungen 2, die Anschlußmetallisierungen 2 elektrisch kontaktierende Kontaktierungsdrahte 3 sowie einer Umhüllung 5. Charakteristisch für einen derartigen Aufbau ist, daß die Metallisierungen 2 Freiränder 4 lassen, um Über­ schläge von den Anschlußmetallisierungen über die Mantelflä­ che des Varistorkörpers 1 zu verhindern. Die Breite eines derartigen Freiraums ist in Fig. 1 mit b bezeichnet. Es ist dabei aber immer noch möglich, daß bei höheren Spannungen Im­ pulsüberschläge zwischen dem Varistorkörper 1 und den Kontak­ tierungsdrähten 3 im Bereich der Freirander 4 auftreten kön­ nen.Electrical components in the form of energy varistors are known, for example, from the data book of the applicant SIOV metal oxide varistors, 1992, pages 169 and 170. The Energievaristoren like, whose structure is shown generally in FIG. 1, consist of a varistor body 1 having at schlußmetallisierungen 2, the connection metallization 2 electrically contacting Kontaktierungsdrahte 3 and a cover 5. A characteristic of such a structure is that the metallizations 2 leave free edges 4 in order to prevent strikes from the connection metallizations over the surface of the varistor body 1 . The width of such a free space is designated by b in FIG. 1. It is still possible, however, that at higher voltages pulse flashings between the varistor body 1 and the contact wires 3 can occur in the area of the free runners 4 .

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Möglichkeit zu schaffen, bei elektrischen Bauelementen der vorstehend erläuterten Art, insbesondere bei Energievaristo­ ren eine verbesserte Impulsbelastbarkeit zusammen mit verbes­ serter Feuchteempfindlichkeit und Langzeitstabilität zu schaffen.The present invention has for its object a Possibility to create the electrical components type explained above, in particular in the case of Energievaristo ren improved impulse resilience together with verbes Serter moisture sensitivity and long-term stability create.

Diese Aufgabe wird bei einem elektrischen Bauelement der ein­ gangs genannten Art erfindungsgemäß durch die Merkmale nach dem kennzeichnenden Teil des Patentanspruchs 1 gelöst. This task is the one with an electrical component gangs mentioned type according to the invention by the features the characterizing part of claim 1 solved.  

Eine Weiterbildung der Erfindung ist Gegenstand des Patentan­ spruchs 2.A further development of the invention is the subject of the patent Proverbs 2.

Die Erfindung wird nachfolgend anhand der Fig. 2 der Zeich­ nung näher erläutert, wobei in Fig. 2 gleiche Elemente wie in der bereits erläuterten Fig. 1 mit gleichen Bezugszeichen versehen sind.The invention is explained in more detail below with reference to FIG. 2 of the drawing, wherein in FIG. 2 the same elements as in the already explained FIG. 1 are provided with the same reference numerals.

Wie aus Fig. 2 ersichtlich, sind die Kontaktierungsdrähte 3 im Bereich der Freiränder, welche hier mit 4- 1 bezeichnet sind, aufgebogen, so daß nach oben gekrümmte Bereiche 3-1 der Kontaktierungsdrähte 3 entstehen. Das Maß der Aufbiegung ist in Fig. 2 mit a bezeichnet. Aufgrund des vergrößerten Ab­ standes der Kontaktierungsdrähte 3 im Bereich der Freiräume 4-1 wird der Weg von Elektrode zu Elektrode vergrößert, so daß die Impulsbelastbarkeit, die Feuchteempfindlichkeit und die Langzeitstabilität des Bauelementes verbessert wird.As seen from Fig. 2, the bonding wires 3 in the region of the free edges, which are designated here by 4- 1, bent so that upwardly curved portions 3-1 of the bonding wires 3 are formed. The extent of the bend is designated by a in FIG. 2. Due to the increased level of the contacting wires 3 in the area of the free spaces 4-1 , the path from electrode to electrode is increased, so that the pulse load capacity, the moisture sensitivity and the long-term stability of the component is improved.

Claims (2)

1. Elektrisches Bauelement, insbesondere Energievaristor, mit einem die Bauelementefunktion definierenden Bauelementekörper (1), mit Anschlußmetallisierungen (2) auf sich gegenüberlie­ genden Flächenseiten des Bauelementekörpers (1), welche Frei­ ränder an den sie tragenden Flächenseiten metallisierungsfrei lassen, und mit Kontaktierungsdrähten (3) an den Anschlußme­ tallisierungen (2) für einen elektrischen Außenanschluß, dadurch gekennzeichnet, daß an den Freirändern (4-1), über welche die Kontaktie­ rungsdrähte (3) zum Bauelementeäußeren verlaufen, der Drahtabstand (a) vom Bauelementekörper (1) größer als die Dicke der Anschlußmetallisierungen (2) ist.1.Electrical component, in particular energy varistor, with a component body ( 1 ) defining the component function, with connection metallizations ( 2 ) on opposite surface sides of the component body ( 1 ), which leave free edges on the surface sides carrying them, and with contacting wires ( 3 ) at the terminal metal tallizations ( 2 ) for an electrical external connection, characterized in that on the free edges ( 4-1 ) over which the contact wires ( 3 ) run to the exterior of the component, the wire distance (a) from the component body ( 1 ) is greater than the thickness of the connection metallizations ( 2 ). 2. Bauelement nach Anspruch 1, gekennzeichnet durch eine Umhüllung (5), welche dem Bauelementekörper (1), die An­ schlußmetallisierungen (2) und die Kontaktierungsdrähte (3) einschließlich des Übergangsbereiches von den Anschlußmetal­ lisierungen (2) nach außen umhüllt.2. Component according to claim 1, characterized by a sheath ( 5 ), which encapsulates the component body ( 1 ), the connection metallizations ( 2 ) and the contacting wires ( 3 ) including the transition area from the terminal metalizations ( 2 ) to the outside.
DE1997129184 1997-07-08 1997-07-08 Electrical varistor component Withdrawn DE19729184A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1997129184 DE19729184A1 (en) 1997-07-08 1997-07-08 Electrical varistor component

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1997129184 DE19729184A1 (en) 1997-07-08 1997-07-08 Electrical varistor component

Publications (1)

Publication Number Publication Date
DE19729184A1 true DE19729184A1 (en) 1999-02-04

Family

ID=7835034

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1997129184 Withdrawn DE19729184A1 (en) 1997-07-08 1997-07-08 Electrical varistor component

Country Status (1)

Country Link
DE (1) DE19729184A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10227563A1 (en) * 2002-06-20 2004-01-15 Epcos Ag Electrical component with isolation zone

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1490232A1 (en) * 1963-11-05 1969-05-14 Resista Fabrik Elek Scher Wide Method of making a sheet resistor
DE1947799B2 (en) * 1969-09-20 1972-10-26 Danfoss A/S, Nordborg (Dänemark) PROCESS FOR CONTACTING A SEMI-CONDUCTOR COMPONENT MADE OF OXIDE CERAMICS, IN PARTICULAR FROM BARIUM TITANATE, WITHOUT A BARRIER LAYER
US5053739A (en) * 1989-12-15 1991-10-01 Electric Power Research Institute Very high energy absorbing varistor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1490232A1 (en) * 1963-11-05 1969-05-14 Resista Fabrik Elek Scher Wide Method of making a sheet resistor
DE1947799B2 (en) * 1969-09-20 1972-10-26 Danfoss A/S, Nordborg (Dänemark) PROCESS FOR CONTACTING A SEMI-CONDUCTOR COMPONENT MADE OF OXIDE CERAMICS, IN PARTICULAR FROM BARIUM TITANATE, WITHOUT A BARRIER LAYER
US5053739A (en) * 1989-12-15 1991-10-01 Electric Power Research Institute Very high energy absorbing varistor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10227563A1 (en) * 2002-06-20 2004-01-15 Epcos Ag Electrical component with isolation zone
DE10227563B4 (en) * 2002-06-20 2004-08-12 Epcos Ag Electrical component with isolation zone

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8127 New person/name/address of the applicant

Owner name: EPCOS AG, 81541 MUENCHEN, DE

8139 Disposal/non-payment of the annual fee