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LM2621 MTBF/FIT Supporting data

Dear TI employee.

Nice to meet you,

I want to know Conf level and Activation engery that really mean as shown picture.

Conf level = statisical confidence level

Activation engery= Energy in electron volts for a particular process to occur

If confidence level is really 60%. we can't  delive your TI quality MTBF/FIT supporting data.

can you easily explained about Conf level and Activation engery? 

Thanks you