Hi Klaus,
many thanks for your reply
I understand that I can’t give enough information to get the answer what I want.
But, i can't provide too much . because some security about.
the fact, my customer need to know
Product test every components thermal value at 25deg+15deg and 40deg thermal value is equivale is or not.
but really condition , and the test result is not postive ratio between 25deg+15deg and 40deg.
i need provide some formula or fundamental to prove it.
but i have no idea and I don’t know what keywords to use to search google.
BR