https://www.nxp.com/products/radio-frequency-rf/rf-aerospace-and-defense/1-8-600-mhz-300-w-cw-50-v-broadband-rf-power-mosfets:MMRF1310H
MMRF1310H|1.8-600 MHz 300 W CW 50 V | NXP Semiconductors
MMRF1310H, MMRF1310HS rugged 300 W CW, up to 600 MHz, RF power LDMOS transistor for use in military radio communications and radar applications