Add new spice modells to standard components (JFet)

Metod 1 Modify standard libraries

Do this to add a new components to standard library "/lib/cmp/standard.jft" (or other suitable standard library depending on type of component):

Here follows an example with BF245C from phil_fet.lib
.model BF245C NJF(Beta=5.43157E-4 Betatce=-.5 Rd=1.20869E+1 Rs=1.20869E+1 Lambda=12.71505E-2 Vto=-5.0014 Is=3.64346E-16 Alpha=1e-4 Vk= 80 Cgs=2.00000E-12 Cgd=2.00000E-12 Pb=1.24659 Fc=.5 mfg=Philips)