.MODEL RB520S-40 D
+ IS=21.245E-9
+ N=.97709
+ RS=.86636
+ IKF=26.128
+ XTI=2
+ EG=.69
+ CJO=24.036E-12
+ M=.41322
+ VJ=.33569
+ BV=40
+ IBV=500E-9
+ TT=9.0890E-9