irfp3415.pdf datasheet:

PD - 93962 IRFP3415 HEXFET Power MOSFET Advanced Process Technology D Dynamic dv/dt Rating VDSS = 150V 175 C Operating Temperature Fast Switching RDS(on) = 0.042 Fully Avalanche Rated G Description ID = 43A S Fifth Generation HEXFET Power MOSFETs from International Rectifier utilize advanced processing techniques to achieve extremely low on-resistance per silicon area. This benefit, combined with the fast switching speed and ruggedized device design that HEXFET power MOSFETs are well known for, provides the designer with an extremely efficient and reliable device for use in a wide variety of applications. The TO-247 package is preferred for commercial- industrial applications where higher power levels preclude the use of TO-220 devices. The TO-247 is similar but superior to the earlier TO-218 package because of its isolated mounting hole. TO-247A