The Present Situation of Corrosive Gas Test for Electronic Parts

摘要

To evaluate corrosion resistance and reliability of electronic device in operation and storage condition, corrosive gas tests are performed. Recently many kind of mixed gas tests with low concentration are investigated in some technical committees, and adopted in international standards, ISO, IEC, and Japanese industrial standard (JIS). Our study results indicated that SO_2 and NO_2 mixed gas test was suitable for simulating the ordinary environment. The mixed gas test with ozone accelerates the corrosion of copper, while simulating the ordinary environment. Impedance measurement results reflect the effect of corrosive gas.