Issue including z diode model

[demariano95]

Hi. I am trying to simulate a circuit using Fusion 360. My circuit incorporates a zener diode (namely bzx84c5v1). 

I found a spice model for this zener diode online:

*src=BZX84C5V1;DI_BZX84C5V1;Diodes;Zener <=10V; 5.10V  0.350W   Diodes Inc. 
*SYM=HZEN
.SUBCKT DI_BZX84C5V1  1 2
*        Terminals    A   K
D1 1 2 DF
DZ 3 1 DR
VZ 2 3 2.74
.MODEL DF D ( IS=28.3p RS=33.9 N=1.10
+ CJO=66.2p VJ=0.750 M=0.330 TT=50.1n )
.MODEL DR D ( IS=5.65f RS=44.5 N=3.00 )
.ENDS

I am no expert on SPICE and I don't really know how this work or even if it is correct or not. However I don't even have the opportunity to find out by myself since I can't run the simulation. I am getting this error:

I had just saved the mapping and model but still am unable to simulate. I didn't find anyone having this issue in the forum but maybe I just didn't use the right search keywords.

Also, maybe I'm just really dumb but I cannot for the life of me find an independent voltage source in the Add Part menu. I need it for the DC Sweep simulation, but it's just nowhere to be found.

Any help regarding either of these issues would be much appreciated.

[panpan_fan]

Hi @demariano95 

I hope you are doing well!

For your questions,  here are my answers:

1. For 'Missing SUBCKT...' warning message, can you please try to put the mdl file in the ~/Documents/Fusion 360/spice directory? Simulation will look there for additional models.

2. For fail to find the independent voltage source, you can try the following steps:

In Add Part Dialog -> Click Open Library Manager icon -> In Library Manager dialog -> Switch tab to Available -> Search with 'ngspice' key word to find the ngspice-simulation library -> Select it and Click Use -> Then you can find the independent voltage source in the ngspice-simulation library

I hope my answers can solve your problem. If you still have other problems, please leave your comment, thanks!

Regards,

Panpan Fan