MRF455 Datasheet PDF - New Jersey Semiconductor

The RF Line
NPN SILICON RF POWER TRANSISTORS

. . . designed for power amplifier applications in industrial, commercial and amateur radio equipment to 30 MHz.

• Specified 12.5 Volt, 30 MHz Characteristics -
   Output Power = 50 Watts
   Minimum Gain = 1 1 dB
   Efficiency = 50%