SERGEY CHURAYEV

Dear all. Thanks for your details explanation. I got very realistic results and we can close this ticket. I will inform you if I will get more issues in NGspice. Good luck!

Dear Dietmar, Thank you! You are right, now it work. Tell me please about + M=.3622 It looks like this coefficient does not exist in current specification. But it exists in Pspice mod. And I did not see any warning in NGSPICE log. Without it simulation works more realistic (as I see). =============================== VD 1 0 DC 10V VDMI 1 3 0 VG 2 0 DC 0V J1 3 2 0 KP303D .model KP303D NJF + ( + Vto=-2.3 + Beta=1.5m + Lambda=4.2m + Rd=1 + Rs=1 + Cgs=2.104p + Cgd=2.132p + Pb=1 + Is=33.57f + B=1.1 + Kf=23.06E-18...

JFET DC TEMP SIMULATION PROBLEM