The MRF284LSR1 is a 150 W, 28 V, 135-175 MHz RF Power LDMOS Transistor from NXP Semiconductors (formerly Freescale). It is designed for high power amplifier applications in the VHF frequency range. This transistor offers high gain, ruggedness, and excellent linearity, making it suitable for use in communication transmitters and other high-performance RF systems.

Applications:

• VHF communication transmitters
• Industrial RF heating
• Broadcast transmitters
• Amateur radio linear amplifiers
• Land Mobile Radio (LMR) base stations

Features:

• High output power: 150 W CW
• High gain: 13 dB typical at 175 MHz
• Frequency range: 135 to 175 MHz
• 28 V operation
• High ruggedness
• Internally matched for simplified circuit design
• Gold metallization for enhanced reliability

Benefits:

• Increased transmission range due to high output power
• Reduced drive power requirements due to high gain
• Simplified amplifier design with internal matching
• Robust performance in demanding environments
• Long-term reliability with gold metallization
• Efficient power amplification reduces heat dissipation

Additional Details:

The MRF284LSR1 is built using advanced LDMOS (Laterally Diffused Metal Oxide Semiconductor) technology, providing excellent power gain and linearity. Its internal matching network simplifies amplifier design, reducing the need for external components and tuning. The transistor's ruggedness is crucial for withstanding high VSWR (Voltage Standing Wave Ratio) conditions often encountered in transmitter applications. The use of gold metallization enhances its long-term reliability, preventing corrosion and ensuring consistent performance over time. Its 28V operation is a common voltage level for many VHF power amplifier designs. With its combination of high power, high gain, and robust design, the MRF284LSR1 is a reliable choice for VHF power amplifier applications.