The MRF658, manufactured by Freescale Semiconductor (NXP), is a silicon NPN RF power transistor designed for high-power applications in the 400-512 MHz frequency range. It's commonly utilized in UHF communications equipment, particularly in land mobile radio and broadcast applications. This device boasts high gain, ruggedness, and operates efficiently at 28 volts, making it ideal for demanding scenarios.

Applications

• UHF Radio Transmitters
• Land Mobile Radio Systems
• Broadcast Transmitters
• Base Station Amplifiers
• Amateur Radio Amplifiers

Features

• High Power Output: Delivers significant RF power for extended communication ranges.
• High Gain: Provides substantial signal amplification for efficient transmission.
• 28 V Operation: Compatible with standard 28 V power supplies.
• Rugged Construction: Built to withstand harsh operating conditions and high VSWR levels.
• NPN Silicon Technology: Ensures stable and reliable performance over time.

Benefits

• Extended Communication Range: Enables clear and dependable communication across greater distances.
• Increased System Reliability: Offers consistent performance even in challenging environments.
• Reduced Maintenance Costs: Provides long-term durability and minimizes downtime.
• Simplified Circuit Design: Facilitates straightforward integration into existing system designs.
• Improved Signal Quality: Enhances signal clarity and reduces unwanted noise.

Additional Details

The MRF658 is typically housed in a flange-mounted package, optimizing heat dissipation. Its robust design allows it to function effectively even with high VSWR, enhancing overall system reliability. Typical gain ranges from 8 to 11 dB, with optimal performance within the specified 400-512 MHz frequency band. Proper heatsinking is paramount for maintaining stable and reliable operation. Adhering to the manufacturer's recommended operating conditions is crucial to maximizing the device's lifespan and performance. The MRF658 finds frequent application in scenarios requiring high linearity, and its robust construction makes it a preferred choice for rigorous RF power applications. Its ability to operate at 28V contributes to its widespread use in various UHF communication systems.