Several inquiries have been made for this part number, and a request for a possible cross reference. No Description had been given on prior requests. I located the data sheet link below for a Dual N-Channel Enhancement Mode Power Mosfet. Using the parameters of this data sheet, a possible cross was located in Our system of part number
Some noted differences were the Continous drain current at 25c for the
TSM6968DCARVGCT-ND is Continuous drain current at 25c 6.5 amp and the RDS(ON) is 22mOhm @ 6A, 4.5V
For the FS8205A Continous drain current at 25c is 6 amps and the RDS(ON) on is at 25mOhm MAX (Vgs = 4.5v Id= 4A
There may be other differences than noted and the data sheets should be compared for other differences.
FS8205A Data Sheet