model jmod jfet 
+vto=-3.1 beta=0.00260834 lambda=0 rd=0.828616
+rs=1.65723 is=1e-14 cgs=5.80456e-12 cgd=5.80456e-12
+pb=1.06503 fc=0.5 kf=1e-20 af=0.2