DE3562835D1 - Chip varistor for use in printed circits, and method of producing it - Google Patents

Chip varistor for use in printed circits, and method of producing it

Info

Publication number
DE3562835D1
DE3562835D1 DE8585109001T DE3562835T DE3562835D1 DE 3562835 D1 DE3562835 D1 DE 3562835D1 DE 8585109001 T DE8585109001 T DE 8585109001T DE 3562835 T DE3562835 T DE 3562835T DE 3562835 D1 DE3562835 D1 DE 3562835D1
Authority
DE
Germany
Prior art keywords
parts
ceramic body
metal coatings
recess
printed
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
Application number
DE8585109001T
Other languages
German (de)
Inventor
Gunter Dipl Ing Ott
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.)
Siemens Bauelemente OHG
Siemens AG
Original Assignee
Siemens Bauelemente OHG
Siemens 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 Siemens Bauelemente OHG, Siemens AG filed Critical Siemens Bauelemente OHG
Priority to DE8585109001T priority Critical patent/DE3562835D1/en
Application granted granted Critical
Publication of DE3562835D1 publication Critical patent/DE3562835D1/en
Expired 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
    • H01C7/102—Varistor boundary, e.g. surface layers

Abstract

1. A chip varistor for use in printed circuits (GS) for installation on conductor path contact surfaces (10, 11) of a printed circuit board (12), consisting of a parallelepiped-shaped ceramic body (20) of varistor material which is provided on oppositely disposed surfaces with solderable metal coatings (23, 24) as electrodes which extend at least on to that surface of the ceramic body (20) which faces towards the printed circuit board (12), characterized in that, at least on its side facing towards the printed circuit board (12), the ceramic body (20) is provided with a recess (25, 26) which forms two lateral parts (27, 28, 31, 32), that parts (35, 36, 37, 38) of the metal coatings (23, 24) extend to the end faces (29, 30, 33, 34) of the lateral parts (27, 28, 31, 32), and that the width and depth of the recess (25, 26) are such that the current path (41) along the surface parts of the recess (25, 26) between the ends (39, 40) of the parts (35, 36, 37, 38) of the metal coatings on the end faces (29, 30, 33, 34) of the lateral parts (27, 28, 31, 32) is longer than the lateral spacing (42) between the metal coatings (23, 24), which corresponds to the thickness of the ceramic body (20).
DE8585109001T 1984-07-31 1985-07-18 Chip varistor for use in printed circits, and method of producing it Expired DE3562835D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8585109001T DE3562835D1 (en) 1984-07-31 1985-07-18 Chip varistor for use in printed circits, and method of producing it

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3428242 1984-07-31
DE8585109001T DE3562835D1 (en) 1984-07-31 1985-07-18 Chip varistor for use in printed circits, and method of producing it

Publications (1)

Publication Number Publication Date
DE3562835D1 true DE3562835D1 (en) 1988-06-23

Family

ID=6242037

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585109001T Expired DE3562835D1 (en) 1984-07-31 1985-07-18 Chip varistor for use in printed circits, and method of producing it

Country Status (3)

Country Link
EP (1) EP0171642B1 (en)
AT (1) ATE34482T1 (en)
DE (1) DE3562835D1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3445698A1 (en) * 1984-12-14 1986-06-26 C. Conradty Nürnberg GmbH & Co KG, 8505 Röthenbach CHIP VARISTOR AND METHOD FOR THE PRODUCTION THEREOF
NL8800156A (en) * 1988-01-25 1989-08-16 Philips Nv CHIP RESISTOR AND METHOD FOR MANUFACTURING A CHIP RESISTOR.
US5287083A (en) * 1992-03-30 1994-02-15 Dale Electronics, Inc. Bulk metal chip resistor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4364021A (en) * 1977-10-07 1982-12-14 General Electric Company Low voltage varistor configuration
US4157527A (en) * 1977-10-20 1979-06-05 General Electric Company Polycrystalline varistors with reduced overshoot
DE3277042D1 (en) * 1981-02-13 1987-09-24 Gen Electric Zinc oxide varistor with reduced fringe current effects
FR2513032B1 (en) * 1981-09-14 1985-12-13 Carreras Michelle INTEGRATED PROTECTION AGAINST OVERVOLTAGES OF AN ELECTRONIC CIRCUIT, AND ELECTRONIC CIRCUIT PROTECTED BY THIS DEVICE
US4451815A (en) * 1982-09-27 1984-05-29 General Electric Company Zinc oxide varistor having reduced edge current density

Also Published As

Publication number Publication date
EP0171642A1 (en) 1986-02-19
ATE34482T1 (en) 1988-06-15
EP0171642B1 (en) 1988-05-18

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee