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DEVSIM: TCAD Device Simulator

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DEVSIM - TCAD Device Simulator

DEVSIM is a tool for TCAD Device Simulation, using finite volume methods. The source code is provided by DEVSIM LLC.


The official website is here:


Please see for installation instructions from binary or source. Archived binary releases are available at Zenodo.

Citing This Work:

Please see Please do not cite this Github Repository as it will be moving in the future.


DEVSIM is licensed under the Apache 2.0 License. Example scripts are also provided under this license. Other files are subject to the license terms of their copyright owners. Please see LICENSE and NOTICE for license terms.


The PDF documentation is located in doc/devsim.pdf. An online version of the documentation is available at A list of documentation resources is available online. Recent changes are available in

The repository for the documentation is at

Supported Platforms:

  • macOS 10.13 (High Sierra)
  • Microsoft Windows (64 bit)
  • Red Hat 7 (Centos Compatible)

Software Features:

  • Python scripting
  • DC, small-signal AC, impedance field method, transient
  • User specified partial differential equations (PDE).
  • 1D, 2D, and 3D simulation
  • 1D, 2D mesher
  • Import 3D meshes.
  • 2D cylindrical coordinate simulation
  • ASCII file format with PDE embedded.


For support and general discussion, please join our forum:


Please see: Contribution guidelines for this project


If you wish to see simulation results, or run the regression tests yourself. They are available from:

Name Description
devsim_tests_msys Windows MSYS Build
devsim_tests_win64 Windows Visual Studio 2022 Build
devsim_tests_macos_arm64 Apple M1 Build
devsim_tests_macos_gcc_x86_64 macOS Build
devsim_tests_linux_x86_64 Linux

The results are platform dependent due to differences in the compiler, operating system, and math libraries used on each platform.

Related Projects

Used directly by the simulator

Name Description
symdiff Symbolic differentiation engine for the simulator
devsim_documentation Documentation for the simulator

Extended examples

Name Description
devsim_bjt_example Bipolar Junction Transistor example
devsim_density_gradient Quantum Corrections to Drift Diffusion simulation
devsim_3dmos 3D Mosfet example used in publication
devsim_misc Miscellaneous scripts

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