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  • The lifetime of MLCCs is affected by temperature condition and the applied DC voltage condition, It can be expressed by the following acceleration equation.

     

     

    For example, the endurance test performed under 85ºC, 16V environment is an accelerated test equivalent to 2,374.16 times under 65ºC, 4V environment. MTTF (40pcs of test sample, 60% confidence level by MIL-STD-690, JIS C 5003) is 103,562,200h, FIT is estimated to be 9.656.

    Voltage acceleration factor (‘n’) and Temperature acceleration factor (‘Ea’) used in the equation differ by the type and structure of the ceramic material.

     

     

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