.MODEL IXGH40N60 NIGBT ( + TAU=287.56E-9 + KP=50.034 + AREA=37.500E-6 + AGD=18.750E-6 + VT=4.1822 + KF=.36047 + CGS=31.942E-9 + COXD=53.188E-9 + VTD=2.6570)