BSIM (Berkeley Short-channel IGFET Model) refers to a family of MOSFET transistor models for integrated circuit design. Accurate transistor models are needed for electronic circuit simulation, which in turn is needed for integrated circuit design. As the devices become smaller each process generation (see Moore's law), new models are needed to accurately reflect the transistor's behavior. Commercial and industrial analog simulators (such as SPICE) have added many other device models as technolog… (More on Bsim)