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In an effort to simplify derating tables, KEMET includes two terms in its derating tables to assist designers in their product selection. First, KEMET defines the recommended derating field as the “recommended application voltage”. This field is viewed as the recommended steady state voltage. Next, to assist designers who need to account for voltage spikes such as automotive designers who need to account for a potential load dump during the life of the automobile KEMET defines the “maximum transient voltage”. These short transient conditions do not have an impact on the long term reliability of the device but can present some risk for failure if the component’s breakdown voltage was reduced during board mounting. To guard against this risk, KEMET recommends that the circuit be proofed to its maximum transient voltage during in-house testing.
