Specifications:
Type: n-channel
Drain-to-Source Breakdown Voltage: 100 V
Gate-to-Source Voltage, max: ±20 V
Drain-Source On-State Resistance, max: 14 mΩ
Continuous Drain Current: 75 A
Total Gate Charge: 110 nC
Power Dissipation: 200 W
Package: TO-220AB
You can replace the IRFB4710 with the: IRFB4110, IRFB4110G, IRFB4115, IRFB4115G, IRFB4310, IRFB4310G, IRFB4310Z, IRFB4310ZG, IRFB4410, IRFB4410Z, IRFB4410ZG