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If I make design change on a module that was already qualifed by an independent accredited laboratory, should I have to repeat the entire qualification test program?

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If I make design change on a module that was already qualifed by an independent accredited laboratory, should I have to repeat the entire qualification test program?

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Probably not. To reduce the time and cost for manufacturers on their design improvement, and to ensure the high integrity of the qualification program, a special document called “Guidelines for retest requirement” has been developed. Under this guideline, based on the nature of the changes, some require only a few retests, and some may require more retests. The number of tests will be determined based on the “Similarity Declaration Form” submitted by the manufacturer.

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