The HMC7357 datasheet does not include MTTF information however the HMC998APM5E datasheet indicates a channel temperature of 175C to maintain a 1 million hour MTTF. Both devices are GaAs pHEMT MMIC amplifiers however the HMC998APM5E is wideband and operates at a higher drain voltage. Can one assume the MTTF for the HMC7357 is 1 million hours for a channel temperature of 175C?
Yes, channel temperature is related to 1 milion operating hours.
Can you provide any details on how an increase in channel temperature above 175C impacts the MTTF, for example a plot that relates channel temperature to MTFF? Is the MTTF 1 million operating hours for a channel temperature of 175C?