The MRF6VP41KH from NXP Semiconductors is a RF Transistor with Frequency 10 to 500 MHz, Gain 20 dB at 20 MHz, Power 1000 W, P1dB 1000 W, Supply Voltage 50 V. More details for MRF6VP41KH can be seen below.
450 Watt, 50 Volt, 3.1 to 3.5 GHz, GaN RF IMFET
15 Watt, 50 Volt, DC to 4 GHz, GaN RF Transistor
15W, 300 MHz to 1.215 GHz, GaN RF Input-Matched Transistor
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