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In SPICE (Simulation Program with Integrated Circuit Emphasis), device models are used to simulate the behavior of various electronic components and semiconductor devices in electronic circuits. These models describe how different components respond to applied voltages, currents, and other parameters under different operating conditions. Device models enable accurate circuit simulations and help designers predict circuit behavior before physical implementation.
SPICE provides a variety of device models for different types of components, including resistors, capacitors, diodes, transistors (MOSFETs, BJTs, JFETs, etc.), inductors, voltage sources, current sources, and more. These models are typically defined in SPICE net-lists using specific syntax and parameters.