Package Modelica
Modelica Standard Library - Version 3.2.3


Package Modelica® is a standardized and free package that is developed together with the Modelica® language from the Modelica Association, see It is also called Modelica Standard Library. It provides model components in many domains that are based on standardized interface definitions. Some typical examples are shown in the next figure:

For an introduction, have especially a look at:

This version of the Modelica Standard Library consists of

that are directly usable (= number of public, non-partial, non-internal and non-obsolete classes). It is fully compliant to Modelica Specification Version 3.2 Revision 2 and it has been tested with Modelica tools from different vendors.

Licensed by the Modelica Association under the 3-Clause BSD License
Copyright © 1998-2019, Modelica Association and contributors.

This Modelica package is free software and the use is completely at your own risk; it can be redistributed and/or modified under the terms of the 3-Clause BSD license. For license conditions (including the disclaimer of warranty) visit

Modelica® is a registered trademark of the Modelica Association.

This document describes version 3.2.3 of the Modelica library.

Extends from Modelica.​Icons.​Package (Icon for standard packages).

Package Contents

BlocksLibrary of basic input/output control blocks (continuous, discrete, logical, table blocks)
ComplexBlocksLibrary of basic input/output control blocks with Complex signals
ComplexMathLibrary of complex mathematical functions (e.g., sin, cos) and of functions operating on complex vectors and matrices
ConstantsLibrary of mathematical constants and constants of nature (e.g., pi, eps, R, sigma)
ElectricalLibrary of electrical models (analog, digital, machines, multi-phase)
FluidLibrary of 1-dim. thermo-fluid flow models using the Modelica.Media media description
IconsLibrary of icons
MagneticLibrary of magnetic models
MathLibrary of mathematical functions (e.g., sin, cos) and of functions operating on vectors and matrices
MechanicsLibrary of 1-dim. and 3-dim. mechanical components (multi-body, rotational, translational)
MediaLibrary of media property models
SIunitsLibrary of type and unit definitions based on SI units according to ISO 31-1992
StateGraphLibrary of hierarchical state machine components to model discrete event and reactive systems
ThermalLibrary of thermal system components to model heat transfer and simple thermo-fluid pipe flow
UsersGuideUser's Guide
UtilitiesLibrary of utility functions dedicated to scripting (operating on files, streams, strings, system)