| 摘要 |
PURPOSE:To improve yield by mounting a resistor having high accuracy shaped separately to a resistance substrate to which a resistor having low accuracy is formed through a printing method. CONSTITUTION:Ag-Pd Conductor paste is printed and applied onto the ceramic substrate 1, and an electrode 2 and a conductor passage are formed. RuO2 Resistance paste is printed, dried and baked, and the resistor 3 having low accuracy is shaped. An electrode 2' and a printing resistor 3' are printed and baked onto another ceramic substrate 1', and the high accuracy resistance chip 5 having + or - 1% accuracy, resistance value thereof is adjusted through sandblasting or a laster or the like, is formed, the high accuracy resistance chip 5 is mounted at the predetermined position of the ceramic substrate 1 through soldering, etc., and the resistance substrate is completed. The yield of the resistance substrate has no relation to the yeild of the high accuracy resistor by incorporating the high accuracy resistance chip formed separately, and yield as a whole is improved. |
