Intellectual property, disclaimer and license

The Mextram model and documentation presented at this website, denoted as the Model, has been developed by NXP Semiconductors until 2006, Delft University of Technology from 2007 to 2014, Silvaco from 2014 to 2015, and Auburn University starting April 2015.

NXP Semiconductors, Delft University of Technology, Silvaco, and Auburn University each claim undivided ownership and copyrights of the Model.


The users are fully free to further develop, adapt and extend the Model as they judge necessary or desirable.

The Model is distributed as is, completely without any express or implied warranty, or service support. The owners and their employees are not liable in any way for the condition or performance of the Model. The owners hereby disclaim all implied warranties.


NXP Semiconductors, Delft University of Technology, Silvaco, and Auburn University hereby grant users a perpetual, irrevocable, worldwide, non-exclusive, royalty-free license with respect to the Model as set forth below.

NXP Semiconductors, Delft University of Technology, Silvaco and Auburn University grant the users the right to modify, copy and redistribute the Model, both within the user’s organization and externally, subject to the following restrictions.


1. The users agree not to charge for the Model itself but may charge for additions, extensions, or support.

2. In any product based on the Model, the users agree to acknowledge the owners as developers of the Model. This acknowledgment shall appear in the product documentation.

3. The users agree to only use the name of CMC standard models to identify implementations of the CMC standard models which produce the same outputs as Standard code for the same inputs passing all CMC QA tests.

4. The users agree to obey all government restrictions governing redistribution or export of the software.

5. The users agree to reproduce any copyright notice which appears on the software and documentation on any copy or modification of such made available to others.