A customer has done board testing in temp oven with 1.5uH inductor and seen the failures.
At that time, they used a long input power cable that caused input voltage spike to go over 7V ( abs max of the part is 7V.)
We suggested to lower the input voltage spike and change it to 4.7uH inductor.
They rerun the test with the changes and found no issues.
Is the spike or 1.5uH inductor cause of the problme?