View mrf454rev1 datasheet:

MOTOROLA Order this document SEMICONDUCTOR TECHNICAL DATA by MRF454/D The RF Line NPN Silicon MRF454 RF Power Transistor Designed for power amplifier applications in industrial, commercial and amateur radio equipment to 30 MHz. • Specified 12.5 Volt, 30 MHz Characteristics — Output Power = 80 Watts 80 W, 30 MHz Minimum Gain = 12 dB RF POWER Efficiency = 50% TRANSISTOR NPN SILICON MAXIMUM RATINGS Rating Symbol Value Unit Collector–Emitter Voltage VCEO 25 Vdc Collector–Base Voltage VCBO 45 Vdc Emitter–Base Voltage VEBO 4.0 Vdc Collector Current — Continuous IC 20 Adc Total Device Dissipation @ TC = 25°C PD 250 Watts Derate above 25°C 1.43 W/°C Storage Temperature Range Tstg –65 to +150 °C THERMAL CHARACTERISTICS Characteristic Symbol Max Unit Thermal Resistance,