COMPOSITION FOR THICK FILM RESISTOR, PASTE FOR THICK FILM RESISTOR AND THICK FILM RESISTOR

• Main Author: MAKUTA FUJIO
• Format: Patent
• Language: English; Japanese
• Published: 16.04.2020
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; CONDUCTORS; ELECTRICITY; GLASS; INSULATORS; JOINING GLASS TO GLASS OR OTHER MATERIALS; METALLURGY; MINERAL OR SLAG WOOL; RESISTORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS

To provide a substantially lead-free thick film resistor which has such a good electric property that it is small in current noise while having a desired resistance value.SOLUTION: A composition for a thick film resistor, a paste for a thick film resistor and a thick film resistor are provided. The composition comprises, as an electrically conductive component, at least one kind selected from ruthenium dioxide, calcium ruthenate, strontium ruthenate and barium ruthenate and as a glass component, fumed aluminum oxide of 0.1 mass% or more and 7.0 mass% or less, but substantially no lead.SELECTED DRAWING: None 【課題】所望の抵抗値を有しながら、電流ノイズが小さいという、良好な電気的特性を有しながら、鉛を実質的に含まない厚膜抵抗体を提供する。【解決手段】導電性成分は、二酸化ルテニウム、ルテニウム酸カルシウム、ルテニウム酸ストロンチウム、およびルテニウム酸バリウムから選択される少なくとも１種を含み、ガラス成分は、鉛を実質的に含まず、かつ、ヒュームド酸化アルミニウムを０．１質量％以上７．０質量％以下含有する、厚膜抵抗体用組成物、厚膜抵抗体用ペースト、および厚膜抵抗体が提供される。【選択図】なし