55 V, 49 A, 17.5 mOhm — the TO-220 workhorse for 48 V and 12 V loads
The 55 V Vdss places it in the 48 V bus / automotive 12 V load-switch class — not a high-voltage flyback device. The 49 A continuous rating assumes the TO-220AB case is bolted to a heatsink; at elevated ambient the current must be derated per the thermal impedance curve.
Total gate charge Qg is 63 nC at 10 V. Input capacitance Ciss is 1470 pF at 25 V drain-source.
175 °C junction — military-grade thermal headroom
The 175 °C Tj max is unusual for a TO-220 MOSFET and signals suitability for high-reliability environments: under-hood automotive, industrial motor drives, and avionics where the die must survive brief overloads without immediate failure. Power dissipation is rated at 94 W at case temperature Tc=25 °C. The TO-220AB package with a copper tab allows bolting to a heatsink; the actual dissipation limit depends on the thermal resistance of the mounting interface.
It is ROHS3 compliant.