The price being paid was not disclosed.
Altis is a former IBM wafer fab in the Paris region about 40 kilometers south of the center of Paris. Altis runs 200mm diameter wafers down to about 130nm CMOS process.
The acquisition will approximately double X-Fab's 200mm wafer manufacturing capacity, X-Fab said. The company said it has a policy to invest in R&D for proprietary technologies and this would apply at the Corbeil-Essonnes site.
"I am convinced that this acquisition will be of benefit for all parties involved with Altis Semiconductor being a perfect fit for X-Fab on our way to becoming the foundry of choice for the analog world," said Rudi De Winter, CEO of X-Fab Group, in a statement. "It enables us to quickly expand our capacities to meet rising customer demand."
The assets will be transferred to the newly-founded X-Fab France SAS.