アルミ電解コンデンサの短期試験方法に関する考察

摘要

近年，アルミ電解コンデンサの耐久性が向上し，長寿命を有するものが多くなった．アルミ電解コンデンサの寿命を把握するには，加速試験でも長期間を必要とし，調達部品の信頼性を把握することが困難になっている．本報告では，アルミ電解コンデンサの劣イヒ故障の要因である電解液の拡散現象に着目した短期試験方法と寿命推定の事例について紹介する．%In recent years, the durability of aluminum electrolytic capacitors improved, and the one to have long life increased. It needs long period of time to grasp the life of aluminum electrolytic capacitors even on the accelerated test. Therefore, it becomes difficult to grasp the reliability of the electric components. This report introduces the consideration of life artificial presumption and the short period examination method which aimed at diffusion phenomena of the electrolytic solution which is the main factor of the degradation failure of the aluminum electrolytic capacitors.