#315 Undefined Parameter vbic_cje in NGSpice Netlist Simulation with SG13G2 Model Library
Issue created by 
ArashKat
Running the following netlist in ngspice:
• Example NGSpice netlist
• Circuit description  
V1 net2 GND DC 3 * Voltage source with 3V DC  
R1 net2 net1 1k m=1 * Resistor R1 with value 1k ohm  
R2 net1 GND 1k m=1 * Resistor R2 with value 1k ohm  
R3 net3 GND 1k m=1 * Resistor R3 with value 1k ohm
• Include the transistor model library  
.include "/home/arashka/IHP-Open-PDK/ihp-sg13g2/libs.tech/ngspice/models/sg13g2_hbt_mod.lib"
• Define the transistor subcircuit instance  
XQ1 net2 net1 net3 GND npn13G2 Nx=2
Netlist line no. 0:  
Undefined parameter [
vbic_cje]  
Netlist line no. 0:  
Cannot compute substitute
IHP-GmbH/IHP-Open-PDK