US Patent 7591965 Resistance paste and resistor

A lead-free resistance paste and a lead-free resistor that is formed with the resistance paste and has a high resistance value and excellent electric characteristics are disclosed. The resistance paste is substantially made of electrically conductive particles, glass frit and an organic vehicle, wherein the electrically conductive particles are made of iridium dioxide (IrO2) alone, or of iridium dioxide and ruthenium dioxide (RuO2) which has an average particle diameter of 1.0 μm or less, and the glass frit is glass frit that has an average particle diameter of 5 μm or less and does not contain lead such as borosilicate glass.