STF9NK90Z N-channel MOSFET with 900 V drain-source rating and 8 A continuous drain current targets offline flyback converters and PFC stages.
On-resistance and gate charge — the thermal and drive budget
Rds(on) is 1.3 Ohm maximum at 3.6 A and 10 V. The 40 W power dissipation limit constrains continuous operation below the 8 A rating. Gate charge is 72 nC at 10 V. Input capacitance is 2115 pF at 25 V.
Temperature range and mounting — industrial and automotive environments
The TO-220FP package is a through-hole mount, suited for board-level assembly in power supplies, motor drives, and industrial control modules where vibration resistance and thermal cycling are concerns.
The part is ROHS3 compliant, satisfying the EU RoHS directive for lead-free assembly.