I'd be surprised if that ever happens.
They cost $0.34 each.? Unlikely anybody will undertake much Failure Mode and Effects Analysis work.? To learn anything you have to get down to the die and the interconnects.? On a plastic encapsulated part that means mechanical removal (micro sandblast) or chemical removal.? It's not like a custom chip where you can remove a metal cap and see everything exposed after only a couple minutes of work.
If you can see inside you can tell the difference between overcurrent and electrostatic discharge damage.? They look very different under the microscope.
Pretty likely the depth of analysis will be "Darn.? It failed ... replace it".
I used to work as a Reliability Analyst.? If you want high reliability you have to derate the parts, meaning you run them at a fraction of their rated limits of current, voltage, temperature, vibration.
With hobby radio equipment we are surely not running at a conservative fraction of rated limits.? Some of us run these puppies hard and hot.
If you have repeated failures you should be thinking about the Why? yourself, and removing the likely causes until your circuit survives for a long time.
If it failed before you started operating it may have been caused by electrostatic discharge during handling.
If it failed during operation it's most likely VSWR or excessive voltage.
Mouser has them in stock.? Go gettem!
