This MOSFET is from the Polar series and has a part number of IXTK140N30P.

• FET Type: N-Channel
• Drain to Source Voltage (Vdss): 300V
• Power Dissipation (max): Not specified
• Current - Continuous Drain (Id) @ 25°C: 140A (Tc)
• Rds On (Max) @ Id, Vgs: 24mOhm @ 70A, 10V
• Vgs(th) (Max) @ Id: 5V @ 500μA
• Gate Charge (Qg) (Max) @ Vgs: 185 nC @ 10 V
• Input Capacitance (Ciss) (Max) @ Vds: 14800 pF @ 25 V
• Drive Voltage (Max Rds On, Min Rds On): 10V
• Vgs (Max): ±20V
• Mounting Type: Through Hole
• Package/Case: TO-264-3, TO-264AA
• Supplier Device Package: TO-264 (IXTK)
• Temperature Range: Not specified
• MSL Level: 1 (unlimited)
• REACH Status: REACH unaffected
• HTSUS Code: 8541.29.0095
• Manufacturer: IXYS