The TGF2978-SM from QORVO is a 20 W discrete GaN on SiC HEMT which operates from DC to 12 GHz. It has output power of 19W, linear gain of 11dB, and needs an operating voltage of 32V.
The device is available in a Low thermal resistance industry-standard 3 x 4 mm surface mount QFN package. It has applications in the military and commercial radar industries like avionics, marine and weather forecasting.