Lifetime of active devices

would qorvo have any data on long term failure of active devices that are continuously powered on. Trying to predict the lifetime of our products. When does the bathtub plot start rising indicating failures at the end of life?

Any particular Qorvo products you are interested in?
Qorvo normally specifies a MTTF or FIT based on HTOL tests at process level. These tests assumes being continuously powered on.

any generic amplifier, lets go with the CMD271P3. Is there a method to convert MTTF or HTOL data into the start of failure on the bathtub plot?

It’s not straightforward as the MTTF or FIT gives the failure rate during the flat middle part of the bath tub curve, before the wear out phase. There are methods of estimating start of wear out from MTTF or FIT, I’d recommend researching this online as there are a wealth of resources out there on reliability.
Most customers predict product reliability from MTTF or FIT. Getting asked about bath tub plots rising to indicate wear out phase is unusual.

ok, will search online. thanks