NXP Semiconductors MRF5S9080NR1

Overview

MRF5S9080NR1 from Freescale Semiconductor is an N-channel enhancement-mode lateral RF power MOSFET designed for GSM and GSM EDGE base station amplifiers operating at 869–960 MHz. It delivers 80 W CW output at 26 V, achieves 18.5 dB power gain and 60% drain efficiency in GSM mode, and supports 36 W average output with 2.5% rms EVM in EDGE modulation.

For engineers reviewing the MRF5S9080NR1 datasheet, MRF5S9080NR1 pinout, MRF5S9080NR1 application, or MRF5S9080NR1 equivalent, this device is selected for high-efficiency, high-linearity RF final-stage amplification in cellular infrastructure where thermal robustness (200°C junction), 10:1 VSWR tolerance, and internal input matching are critical design requirements.

Technical Context

This device employs a laterally diffused MOS structure optimized for broadband RF power amplification in the 800–960 MHz band. Its internally matched input eliminates external matching networks at 50 Ω, while its series-equivalent large-signal impedance parameters (e.g., Z_source = 5.31 − j5.59 Ω at 845 MHz) are characterized for precise external output network design.

It operates under fixed gate bias (V_GS(Q) = 3.5–4.5 Vdc at I_DQ = 600 mA) and supports both CW and complex modulated signals (GSM EDGE), with spectral regrowth specified at −63 dBc (400 kHz offset) and −77 dBc (600 kHz offset) - confirming suitability for spectrally constrained cellular standards.

Key Specifications

Pinout & Package

Package: TO-270 WB-4 (Case 1486-03), plastic, 5-lead surface-mount with exposed heat slug. Designed for low-thermal-resistance mounting to heatsinks (R_θJC = 0.54°C/W at 36 W CW).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar RF power transistor applications.

Compared with MRFE6VP61K25H and BLF8G20LS-200P, the MRF5S9080NR1 offers optimal balance of 80 W output, internal 50 Ω input match, 10:1 VSWR tolerance, and compact TO-270 WB-4 footprint - making it the most cost- and space-efficient solution for legacy and greenfield GSM/GSM EDGE base station amplifiers.

Availability

MRF5S9080NR1 is available at Aetrix Electronics and suitable for GSM base station transmitters, GSM EDGE macrocell amplifiers, and TDMA/CDMA infrastructure amplifiers requiring stable component supply, long-lifecycle support, and traceable sourcing for telecom OEMs.

Supply support for MRF5S9080NR1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Freescale Semiconductor (now part of NXP Semiconductors) is a global leader in RF power solutions for wireless infrastructure, automotive radar, and industrial heating applications.

The MRF5S9080NR1 belongs to Freescale's MRF5S family of laterally diffused RF power MOSFETs, engineered specifically for high-efficiency, high-linearity amplification in 800–1000 MHz cellular base stations.

FAQ

What is the maximum drain-source voltage rating for the MRF5S9080NR1?

The MRF5S9080NR1 has a maximum drain-source voltage (V_DSS) rating of +65 Vdc, with a minimum of −0.5 Vdc. This 65 V rating allows safe operation under transient voltage spikes common in RF power amplifier circuits, especially during VSWR events. The MRF5S9080NR1 is qualified for continuous operation up to 32 V_DD, but its absolute maximum rating ensures margin for reliability in real-world base station environments.

Does the MRF5S9080NR1 require external input matching components?

No, the MRF5S9080NR1 is internally matched for 50 Ω input impedance across its operating band (869–960 MHz), eliminating the need for external input matching networks in standard 50 Ω test fixtures and production designs. This feature is confirmed in the datasheet's "Features" section and validated via measured input return loss (−15 dB typical at 960 MHz). External matching remains necessary only for non-50 Ω systems or specialized linearity optimization.

What is the thermal resistance (junction-to-case) of the MRF5S9080NR1 under typical operating conditions?

The MRF5S9080NR1 has a thermal resistance R_θJC of 0.54°C/W when operating at 36 W CW with case temperature at 80°C, and 0.50°C/W at 80 W CW with case temperature at 79°C. These values are measured per AN1955 methodology and reflect the device's efficient heat transfer through its exposed metal slug in the TO-270 WB-4 package - enabling compact heatsink designs in space-constrained base station modules.

Can the MRF5S9080NR1 be used in GSM EDGE applications with digital pre-distortion (DPD)?

Yes, the MRF5S9080NR1 is characterized for GSM EDGE modulation and delivers 36 W average output with 2.5% rms EVM and −63 dBc spectral regrowth at 400 kHz offset - performance metrics that meet 3GPP-compliant DPD implementation requirements. Its linearized large-signal behavior and stable gain compression profile (P1dB = 90 W) make it compatible with standard DPD algorithms used in commercial macrocell transceivers.

What does the "R1" suffix indicate in the MRF5S9080NR1 part number?

The "R1" suffix in MRF5S9080NR1 denotes tape-and-reel packaging: 500 units per 44 mm wide, 13-inch diameter reel. This format is optimized for automated SMT assembly in high-volume telecom equipment manufacturing. The R1 variant is identical in electrical and thermal specifications to the base MRF5S9080N, differing only in packaging - and is the standard orderable configuration for production use.