Invention Grant
- Patent Title: Multilayer varistor and method for manufacturing a multilayer varistor
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Application No.: US17638635Application Date: 2021-07-26
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Publication No.: US11901100B2Publication Date: 2024-02-13
- Inventor: Hermann Grünbichler , Jaromir Kotzurek , Franz Rinner
- Applicant: TDK Electronics AG
- Applicant Address: DE Munich
- Assignee: TDK Electronics AG
- Current Assignee: TDK Electronics AG
- Current Assignee Address: DE Munich
- Agency: Slater Matsil, LLP
- Priority: DE 2020122299.8 2020.08.26
- International Application: PCT/EP2021/070804 2021.07.26
- International Announcement: WO2022/042971A 2022.03.03
- Date entered country: 2022-02-25
- Main IPC: H01C7/10
- IPC: H01C7/10 ; H01C7/102 ; H01C7/112 ; H01C7/18 ; H01C17/065

Abstract:
In an embodiment a method for manufacturing a multilayer varistor includes providing a first ceramic powder for producing a first ceramic material and at least one second ceramic powder for producing a second ceramic material, wherein the ceramic powders differ from each other in concentration of monovalent elements X+ by 50 ppm≤Δc(X+)≤5000 ppm, wherein X+=(Li+, Na+, K+ or Ag+), and wherein Δc denotes a maximum concentration difference occurring between an active region and a near-surface region of the multilayer varistor, slicking of the ceramic powders and forming of green films, partially printing of a part of the green films with a metal paste to form inner electrodes, stacking printed and unprinted green films, laminating, decarbonizing and sintering the green films and applying outer electrodes.
Public/Granted literature
- US20220406493A1 Multilayer Varistor and Method for Manufacturing a Multilayer Varistor Public/Granted day:2022-12-22
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