Comment by bdd

Dunno. This works for me without damaging the parts, pads, or traces. Your link is for PCBA reflow ovens. Talks about minutes long of exposure. I'm using a Atten ST-862D hot air station with questionable temperature and airflow accuracy. For an M.2 drive I'll probably soak 225 for 15 seconds 3 times the size of the chip areas in circles. Hit my memory-1 button to go to 400 and focus on the chip for 3 seconds. Hit memory-2 to go down to 300 and one up arrow for 325 for 5 more seconds while watching nearby caps' solder pads and ensuring they don't fly away. ¯\_(ツ)_/¯