Ruthenium Oxide Powder Composition for Thick film Resistor Elements Using Same and Thick film Resistor Element

摘要

A ruthenium oxide powder that can be produced at low cost as an electronic component material such as a tip resistor, a hybrid IC, or a resistance network having a sufficient performance even if the ruthenium content is low, a composition for a thick film resistor using the same, and a thick film resistor do. A rutile oxide (RuO ₂ ) powder having a rutile type crystal structure and having a crystallite diameter of 3 to 10 nm and a Ru content of 73 mass% or more as measured by X-ray diffractometry on its (110) Ruthenium powder; A composition for a thick-film resistor comprising conductive particles composed of ruthenium oxide powder and glass powder as main components; Wherein the thick film resistor composition is a thick film resistor paste in which the thick film resistor composition is dispersed in an organic vehicle containing a fatty acid and the content of the fatty acid is 0.1 to 10 parts by weight based on 100 parts by weight of ruthenium oxide.