The BLF278 is a VHF push-pull power MOS transistor - Application: Broadcast and VHF Communication transmitters ; Description: VHF VDMOS RF POWER Transistor ; Efficiency: 55 %; Frequency: 225 MHz; Load power: 250 W; Operating voltage: 50 VDC; Power gain: 16 dB.
The BLF278 is currently sourced by NXP Semiconductors.