This section is informational only, there is no user input required. IEC62380 and SN29500 use the total Mbit and/or transistor count to determine a base level FIT. If "Transistor" is selected, we proportion out the Analog FIT based on its raw transistor count. If "Area" is selected, we proportion out the FIT rate based on the part's relative size to the chip. This does not change the overall Base FIT of the device, just the distribution of the Base FIT.