IXYS is a semiconductor company. Co.'s power semiconductor products are divided into two primary categories: power metal-oxide-silicon transistors and bipolar products. Also, Co.'s integrated circuits (ICs) include microcontrollers, mixed-signal application specific integrated circuits, and power management and control ICs, and its radio frequency power semiconductors include field-effect transistors, pseudomorphic-high-electron-mobility transistors, Gunn diodes and monolithic microwave ICs. In addition, Co.'s systems and other products include laser diode drivers, high voltage pulse generators and modulators, as well as high power subsystems, sometimes known as modules or stacks.