BLF369 500W Ultra high power Mosfet Rugged LDMOS Device Drives 500 W At 500 MHz This efficient LDMOS device provides high output power and generous gain for HF/VHF broadcast and UHF radar applications while occupying a compact footprint. Designers seeking to generate high output power in broadcast and radar systems are nonetheless hoping to do so in the smallest device/circuit footprint possible. For HF/VHF broadcast and UHF radar markets, the new BLF369 LDMOS transistor from Philips Semiconductors is not only compact, but also delivers a generous 500 W CW output power from HF through 500 MHz.