IRF740
*Model generated by LTspice MOS tool
.MODEL IRF740 VDMOS(KP=3.1089 RS=0.0048 RD=0.4166 RG=0.91 VTO=4.5
+LAMBDA=0.001 CGDMAX=1218p CGDMIN=15p CGS=1300p TT=533n
+IS=2.41E-09 N=1.401 RB=0.013053 m=0.452 Vj=0.36 Cjo=1424.39pF)
+mfg=STmicro Qg=35n Ron=0.48 Vds=400)
IRF840
*Model generated by LTspice MOS tool
.MODEL IRF830 VDMOS(KP=0.6613 RS=0.0135 RD=1.0517 RG=0.79 VTO=4.68
+LAMBDA=0.03 CGDMAX=717p CGDMIN=5p CGS=1170p TT=626n
+IS=9.68E-09 N=1.512 RB=0.011996 m=0.417 Vj=0.28 Cjo=680.25pF)
+mfg=STmicro Qg=22n Ron=1.35 Vds=500)