.MODEL -- Define a SPICE Model

Defines a model for a diode, transistor, switch, lossy transmission line or uniform RC line

Some circuit elements, for example, transistors, have many parameters. Instead of defining every transistor parameter for every instance of a transistor, transistors are grouped by model name and have parameters in common. The transistors of the same model can have different sizes and the electrical behavior is scaled to the size of the instance.

Syntax: .model <modname> <type>[(<parameter list>)]

The model name must be unique. That is, two different types of circuit elements, such as a diode and a transistor, cannot have the same model name. The parameter list depends on the type of model. Below is a list of model types:

See the description of the circuit element for a list of which parameters are instance specific and which are common to a model.