Title:
CHIP RESISTOR
Document Type and Number:
WIPO Patent Application WO/2022/180979
Kind Code:
A1
Abstract:
Provided is a chip resistor having excellent corrosion resistance. A chip resistor 1 according to the present invention is provided with: a rectangular parallelopiped insulating substrate 2; a pair of front electrodes 3 formed on opposite ends of the front surface of the insulating substrate 2; a pair of back electrodes 4 formed on opposite ends of the back surface of the insulating substrate 2; a resistor 5 that straddles over the pair of front electrodes; a first insulating layer 6 that is formed from a glass material and that covers the resistor 5; a second insulating layer 7 that is formed from a resin material and that is laid on the first insulating layer 6; a pair of auxiliary electrode layers 8 that are each formed from a highly sulfur-resistant material and that are laid on the front electrodes 3; a pair of end-face electrodes 9 that extend on opposite end faces of the insulating substrate 2 and that enable electrical conduction between the auxiliary electrode layers 8 and the back electrodes 4; and outer plated layers 10 that cover the auxiliary electrode layers 8, the end-face electrodes 9, and the back electrodes 4. The first insulating layer 6 has projection parts 6a that are not covered with the second insulating layer 7 and that overlap the upper surfaces of the front electrodes 3. The auxiliary electrode layers 8 are formed so as to cover the front electrodes 3 and the projection parts 6a and to reach the upper surface of the second insulating layer 7.
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Inventors:
KIMURA TARO (JP)
KAWAKAMI KEITA (JP)
KAWAKAMI KEITA (JP)
Application Number:
PCT/JP2021/044274
Publication Date:
September 01, 2022
Filing Date:
December 02, 2021
Export Citation:
Assignee:
KOA CORP (JP)
International Classes:
H01C1/142; H01C7/00
Domestic Patent References:
| WO2020189217A1 | 2020-09-24 |
Foreign References:
| JP2003282305A | 2003-10-03 | |||
| JP2009043883A | 2009-02-26 | |||
| JP2016092127A | 2016-05-23 | |||
| JP2020170843A | 2020-10-15 |
Attorney, Agent or Firm:
THE PATENT BODY CORPORATE TAKEWA INTERNATIONAL PATENT OFFICE (JP)
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