| 摘要 |
<p>PURPOSE:To make the allowable electric power of a resistor large so as to be capable of being mounted on an electric circuit to which large electric power is applied by a method wherein a resistor film is formed of tungsten. CONSTITUTION:A resistor paste obtained by adding and mixing a proper kinder and a proper solvent with tungsten powder is printed in advance so as to be coated on a ceramic green sheet to be used as an insulating substrate 1 by a screen printing method or the like. Then the ceramic green shut is fixed at a temperature of about 1600 deg.C and changed into the insulating substrate 1, a resistor film 2 which is composed of tungsten is simultaneously applied to, and formed on, the insulating substrate 1. Aluminum oxide or a material of the same quality as the insulating substrate 1 is added to the inside of the resistor film 2 within a range of 5 to 50wt.%. Thereby, the title resistor can be mounted on an electric circuit to which large electric power is applied.</p> |
