I imported a spice model for the J310 (Philips) JFET into KiCad. The parameters read correctly into the simulation model editor, but when I try to run spice, I get an error that the following parameters are not recognized : nr, alpha, vk, isr. This is a level 2 model. Has anybody had issues importing JFET spice models ?
There are probably no error messages, but warnings that these parameters are not supported and thus ignored. They are specific to the LTSPICE JFET model. Unfortunately the model is not published and open source.
Isr Gate junction recombination current parameter A 0.0
Nr Emission coefficient for Isr - 2.0
alpha Ionization coefficient 1/V 0.0
Vk Ionization knee voltage V 0.0
I guess these parameters are not that important, if you are not looking for breakdown or tiny gate leakage currents.
There are J310 model parameters availble without these parameters, see https://ww.interfet.com/jfet-datasheets/interfet-spice-models.xlsx