EP0436776B1 - Kombination von Schichtwiderständen mit strukturierten Kontaktflächen und Anschlussdrähten - Google Patents

Kombination von Schichtwiderständen mit strukturierten Kontaktflächen und Anschlussdrähten Download PDF

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Publication number
EP0436776B1
EP0436776B1 EP90115767A EP90115767A EP0436776B1 EP 0436776 B1 EP0436776 B1 EP 0436776B1 EP 90115767 A EP90115767 A EP 90115767A EP 90115767 A EP90115767 A EP 90115767A EP 0436776 B1 EP0436776 B1 EP 0436776B1
Authority
EP
European Patent Office
Prior art keywords
contact surfaces
combination
connecting wires
contact
film resistors
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.)
Expired - Lifetime
Application number
EP90115767A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0436776A3 (en
EP0436776A2 (de
Inventor
Wolfgang Dr. Dipl.-Phys. Platen
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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 Mannesmann AG filed Critical Mannesmann AG
Publication of EP0436776A2 publication Critical patent/EP0436776A2/de
Publication of EP0436776A3 publication Critical patent/EP0436776A3/de
Application granted granted Critical
Publication of EP0436776B1 publication Critical patent/EP0436776B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01C1/142—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 coated on the resistive element

Definitions

  • the invention relates to a combination of connecting wires and electrical sheet resistors, consisting of an electrical resistance structure, two connecting tracks and two contact areas for the connecting wires, the contact areas being divided into two smaller contact areas by insulating strips.
  • the measurement provides the electrical resistance between the two voltage test probes.
  • the contact surfaces of the sheet resistors have a size that are designed for welding or other fastenings for each connecting wire. These areas are oversized for the space required by test probes. On the other hand, the additional space for a four-point measurement with two additional contact surfaces of the size required for the test probes is not available. A subdivision of the existing two contact areas into four smaller areas results in contact areas which are individually too small for contacting with connecting wires.
  • an electrical contact for electrical sheet resistors consisting of an electrical resistance structure.
  • two connecting tracks and two contact surfaces for the connecting wires whereby the contact areas are divided into two smaller contact areas by insulating strips, which are accessible to a precise resistance fine adjustment by means of a four-point resistance measurement and are contacted with connecting wires without reducing the measuring accuracy.
  • An electrical sheet resistance as specified in the preamble of claim 1 is known from WO 86/01027.
  • the object is achieved in that the insulating strips and the connecting wires are arranged in their direction so that both small contact surfaces are electrically conductively connected to the connecting wire.
  • the insulating strip bridged by the connecting wire is preferably arranged perpendicular to the wire axis.
  • constriction is located directly at the end of the insulating strip and as close as possible to the connection point created by the connecting wire between the respective two small contact surfaces.
  • the division of the two contact areas into two smaller contact areas does not affect the required accuracy when attaching the connecting wires. If the connecting wire to be fastened protrudes beyond the boundaries of the smaller contact areas, this has no adverse effect on the adjustment value because the electrical connection is provided in both areas. It is also advantageous that a different displacement of the connecting wires across the insulating strip does not affect the electrical resistance. if the electrical contact to the two contact surfaces is close to the insulating strip.
  • the structuring of the contact surfaces can be used for electrical sheet resistors made of all known materials (e.g. metals such as platinum, nickel; semiconductors such as silicon; conductive plastics), produced using thin or thick film technology or from foils. Suitable methods for producing the insulating strips are laser structuring, dry or wet etching.
  • Known contacting methods for the connecting wires are thermocompression welding, bonding, gap welding, soldering or other methods which produce a sufficiently large contact area with the component.
  • the figure shows schematically, in an exemplary embodiment, a top view of two contact areas of an electrical thin-film resistor, which are divided into two smaller contact areas (1) by insulating strips (2), the insulating strips (2) being positioned such that they lead to a connecting track (3) belonging small contact surfaces (1) are only electrically connected to one another and to the connecting track (3) via a narrow point (4).
  • the contact is made with two connecting wires (5) at the contact points (6).

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Measuring Leads Or Probes (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
EP90115767A 1990-01-08 1990-08-17 Kombination von Schichtwiderständen mit strukturierten Kontaktflächen und Anschlussdrähten Expired - Lifetime EP0436776B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4000301A DE4000301C1 (enrdf_load_stackoverflow) 1990-01-08 1990-01-08
DE4000301 1990-01-08

Publications (3)

Publication Number Publication Date
EP0436776A2 EP0436776A2 (de) 1991-07-17
EP0436776A3 EP0436776A3 (en) 1992-04-15
EP0436776B1 true EP0436776B1 (de) 1995-01-04

Family

ID=6397711

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90115767A Expired - Lifetime EP0436776B1 (de) 1990-01-08 1990-08-17 Kombination von Schichtwiderständen mit strukturierten Kontaktflächen und Anschlussdrähten

Country Status (2)

Country Link
EP (1) EP0436776B1 (enrdf_load_stackoverflow)
DE (2) DE4000301C1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007046907B4 (de) 2007-09-28 2015-02-26 Heraeus Sensor Technology Gmbh Schichtwiderstand und Verfahren zu dessen Herstellung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4034149A (en) * 1975-10-20 1977-07-05 Western Electric Company, Inc. Substrate terminal areas for bonded leads
US4053866A (en) * 1975-11-24 1977-10-11 Trw Inc. Electrical resistor with novel termination and method of making same
IN165267B (enrdf_load_stackoverflow) * 1984-07-31 1989-09-09 Rosemount Inc

Also Published As

Publication number Publication date
EP0436776A3 (en) 1992-04-15
DE4000301C1 (enrdf_load_stackoverflow) 1991-05-23
DE59008198D1 (de) 1995-02-16
EP0436776A2 (de) 1991-07-17

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