User`s guide

Usin

the Parts Utility to Edit Models 4

-25

You can modify each model characteristic listed in the Model

Spec list with new values from the data sheets. The Part utility

takes the new information and fits new model parameter values.

When updating the entered data, the Parts utility expects either:

• device curve data (point pairs), or

• single-valued data,

depending on the device characteristic.

For the diode, Forward Current, Junction Capacitance, and

Reverse Leakage require device curve data. Reverse Breakdown

and Reverse Recovery require single-valued data.

Table 4-2

lists the data sheet information for the Dbreak-X

model.

Table 4-2

Sample Diode Data Sheet Values

For this model

characteristic...

Enter this...

forward current (1.3, 0.2)

junction capacitance (1m, 120p) (1, 73p) (3.75, 45p)

reverse leakage (6, 20n)

reverse breakdown (Vz=7.5, Iz=20m, Zz=5)

reverse recovery no changes