User Guide

Chapter 5 Using the Symbol Editor
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Package definitions are created and modified with the
PSpice Schematics symbol editor.
Footprints
The footprint for a component is the definition of its
mechanical outline, pad pattern, identifiers, and physical
extent (boundary). The package definition for a symbol
defines the names of the footprints (package types) in
which it is available. For each footprint, the package
definition defines the physical pin number assignments
for the pins. When a symbol is placed on a schematic, the
PKGTYPE attribute defines the name of the footprint to be
used in the layout.
Simulation Models
If a component can be simulated, it will have an associated
simulation model. The MODEL attribute on a symbol
defines the name of the simulation model. Simulation
models are stored in model libraries (.lib). You can create
new simulation models with Parts or with a text editor.
Refer to the Creating Models chapter in your PSpice user’s
guide.