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MRF9085

Manufacturer: FREE/MOT, Freescale

MRF9085, MRF9085R3, MRF9085SR3, MRF9085LSR3 880 MHz, 90 W, 26 V Lateral N-Channel RF Power MOSFETs

Partnumber Manufacturer Quantity Availability
MRF9085 FREE/MOT, Freescale 285 In Stock

Description and Introduction

MRF9085, MRF9085R3, MRF9085SR3, MRF9085LSR3 880 MHz, 90 W, 26 V Lateral N-Channel RF Power MOSFETs # Introduction to the MRF9085 RF Power Transistor  

The MRF9085 is a high-performance RF power transistor designed for use in industrial, scientific, and medical (ISM) applications, as well as in radio frequency (RF) amplification systems. This N-channel enhancement-mode lateral MOSFET is optimized for operation in the 860-960 MHz frequency range, making it particularly suitable for applications such as RF heating, plasma generation, and wireless communication infrastructure.  

With a robust design, the MRF9085 delivers high power output and efficiency, ensuring reliable performance in demanding environments. It features a high gain and excellent thermal stability, which contribute to its effectiveness in continuous-wave (CW) and pulsed RF applications. The transistor is housed in a ceramic package with a flange for efficient heat dissipation, allowing for sustained operation under high-power conditions.  

Key specifications of the MRF9085 include a typical output power of 300W at 28V drain supply voltage, along with a power gain of 14 dB under optimal conditions. Its rugged construction ensures durability, even in high-stress RF environments. Engineers and designers favor this component for its repeatable performance and ease of integration into RF power amplifier circuits.  

The MRF9085 is widely used in industrial heating systems, broadcast transmitters, and RF energy applications, where consistent power delivery and efficiency are critical. Its combination of high power handling, thermal resilience, and frequency stability makes it a preferred choice for RF power amplification needs.

Application Scenarios & Design Considerations

MRF9085, MRF9085R3, MRF9085SR3, MRF9085LSR3 880 MHz, 90 W, 26 V Lateral N-Channel RF Power MOSFETs

Alternative Part Number

  • BLF188XR --: High-power LDMOS RF transistor in the same 1 kW-class VHF/UHF range, widely used as a drop-in replacement for MRF-series devices in RF amplifiers.
  • MRFE6VP8600H --: 600 W LDMOS RF power transistor covering similar HF/VHF applications with comparable gain and ruggedness, from the same vendor family.
  • BLF578XR --: 1 kW-class LDMOS RF power transistor with similar frequency coverage and output power, suitable for broadcast and industrial RF amplifier designs.
  • SD2933 --: RF power MOSFET rated for similar VHF/UHF applications and power levels, suitable as a functional alternative to the MRF9085.
  • BLF888A --: High-power LDMOS RF transistor in the same 900 MHz class with comparable output power and gain, suitable as a drop-in replacement in broadcast and industrial RF amplifiers.
  • PTFA091201E --: LDMOS RF power transistor with similar 900 MHz band performance and power capability, an alternative from a different vendor series.

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