Welcome to Futaba's All Secret Service Tell-no-one - FASST

Nothing seems to have been published officially by Futaba. Tests done by an individual on this forum has "confirmed" that the gold dot version would handle temps in excess of 100 degC and the older "non dot" versions would stop working in excess of 70 deg. If you visit the FASST site you will see that they recommend not wrapping the receiver in foam and ensuring sufficient airflow around the receiver to prevent heat build-up. That is why some guys chose to put small fans on the non dot versions.

As stated above as well the low signal voltage issue has also been addressed in the newer "gold dot" version. We have only got gold dot versions over here so I am not too sure if the "white dot" is the same as the "gold dot"? The latest version is the HS which has 6 high speed outputs for digital servos.

I made sure I found some "gold dot" versions for our African sun.

I have not seen anyone locally have issues with the non dot versions in both jets and large scale aircraft.