User`s guide

4
-
26 Creatin
g
and Editin
g
Models
To chan
g
e the Forward Current characteristic
1
In the Model Spec list, double-click Forward Current.
The Edit Model Spec-Forward Current dialog box appears.
This dialog box requires curve data.
2
In the Vfwd text box, type
1.3.
3
Press F to move to the Ifwd text box, and then type
0.2.
4
Click Add.
The new values appear in the Vfwd-Ifwd table.
5
Click OK.
To chan
g
e the values for Junction Capacitance
and Reverse Leaka
g
e
1
Follow the same steps as for Forward Current, entering the
data sheet information listed in Table 4-2
that corresponds
to the current device characteristic.
To chan
g
e the Reverse Breakdown characteristic
1
In the Model Spec list, double-click Reverse Breakdown.
The Edit Model Spec-Reverse Breakdown dialog box
appears. This dialog box accepts single-valued data.
2
In the Vz text box, type
7.5.
3
Press F to move to the Iz text box, and then type
20m.
Note that the Parts utility accepts the same scale factors
normally accepted by PSpice A/D.
4
Press F to move to the Zz text box, and then type
5.
5
Click OK.