| 摘要 |
<p>PURPOSE:To obtain a resistor which always maintains relatively high accuracy by heat treating by annealing before trimming to accelerate an aging change of relative resistance accuracy. CONSTITUTION:The entire hybrid substrate on which thick film resistors R1-R3 are printed in advance is heat treated at high temperature to be annealed. The annealing conditions include exposure in atmosphere at 200 deg.C for 2hr. Thereafter, a resistance trimming is achieved. Thus, a resistor which always maintains relatively high accuracy is obtained.</p> |
