TSI Semiconductors is a world-class, specialty foundry offering flexible technology development and the highest industry qual ... ity manufacturing solutions for projects ranging from the smallest to very large lot sizes. At our 8-inch fabrication plant in Roseville, Calif., we can manufacture in a large array of versatile processes that include analog/mixed-signal, deep-submicron, high-voltage BCDMOS, and solutions such as novel materials structures and devices. read more