This project aims to provide Computer Aided Design (CAD) tools for radiation-tolerant, wide-temperature-range digital, analog, mixed-signal, and radio-frequency electronic components suitable for operation in the extreme environments of the Moon, Mars, and other deep space destinations. All such exploration systems will need reliable electronics able to operate in a wide temperature range (-230°C to +130 ?C) and high radiation levels. There is very little knowledge of semiconductor device behavior in extreme low temperatures (currently ongoing research) and no reliable models or design tools. CFDRC will develop first commercial-quality validated models and CAD tools for predicting the electrical performance and reliability of electronic components in extreme low temperatures, with included radiation effects and reliability analysis, using coupled semiconductor and thermal-mechanical simulation. This work will use and implement the newest data from the ongoing NASA Exploration Systems and Research Technology (Code ES&RT) program, led by Prof. Cressler at Georgia Tech (subcontractor in this proposal), involving JPL, BAE, Boeing, Vanderbilt, and others, aimed at developing electronics technology for mixed-signal circuit applications for lunar (to -230?C) applications. Reliable and validated CAD tools will help to predict electronics performance and radiation response in the extreme temperatures, and reduce the amount of testing cost and time.