NXP Semiconductors MRF8S9200NR3

Overview

MRF8S9200NR3 from Freescale Semiconductor is an N-channel enhancement-mode lateral RF power MOSFET designed for CDMA base station amplifiers operating at 920–960 MHz. It delivers 58 W average output power under single-carrier W-CDMA conditions (28 V, 1400 mA IDQ), achieves 19.9 dB power gain and 37.1% drain efficiency at 940 MHz, and supports Class AB/C operation with rugged 10:1 VSWR tolerance.

For engineers reviewing the MRF8S9200NR3 datasheet, MRF8S9200NR3 pinout, MRF8S9200NR3 application, or MRF8S9200NR3 equivalent, this device is selected for high-efficiency, digitally predistorted Doherty PA stages in 900 MHz band macrocell infrastructure where thermal robustness, PAR handling, and input/output matching stability are critical.

Technical Context

This LDMOS transistor uses a laterally diffused structure optimized for broadband cellular infrastructure. Its internally matched 50 Ω input and output enable simplified PCB layout, while its gate-source voltage range (–6.0 to +10 V) and drain-source rating (–0.5 to +70 V) support stable Class C biasing and transient overvoltage resilience.

Thermal design centers on low junction-to-case resistance (0.25 °C/W at 200 W CW), enabling operation up to 225°C junction temperature. The device is characterized with series-equivalent large-signal impedance parameters and common-source S-parameters across 920–960 MHz, supporting accurate load-pull modeling for DPD and envelope tracking integration.

Key Specifications

Pinout & Package

Package: CASE 2021–03, STYLE 1 - Plastic overmolded package with 4 exposed source tabs for low-inductance thermal and electrical grounding. Dimensions per OM-780-2 outline; RoHS compliant, MSL Level 3 (260°C peak reflow).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MRF8S9200NR3, MRF8P9200NR3 offers superior thermal performance and voltage headroom in identical packaging, while PD85008-E extends frequency coverage and output power at the cost of mechanical and layout incompatibility - making MRF8S9200NR3 optimal for cost- and footprint-sensitive 900 MHz CDMA/W-CDMA upgrades.

Availability

MRF8S9200NR3 is available at Aetrix Electronics and suitable for CDMA base station amplifiers, W-CDMA macrocell transmitters, Doherty PA modules, 900 MHz infrastructure equipment, and high-PAR RF transmitters requiring stable component supply and long-term industrial availability.

Supply support for MRF8S9200NR3 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 MRF8S9200NR3 belongs to Freescale's MRF8S family of high-efficiency LDMOS transistors engineered specifically for 3G/4G macrocell base station power amplifiers operating in the 700–1000 MHz bands.

FAQ

What is the maximum continuous drain voltage rating for the MRF8S9200NR3?

The MRF8S9200NR3 has a maximum drain-source voltage rating (VDSS) of +70 Vdc and –0.5 Vdc. This rating ensures safe operation under transient overvoltage conditions typical in base station PA stages, including antenna mismatch events and switching transients. The MRF8S9200NR3 is tested to survive 10:1 VSWR at 32 Vdc, confirming robustness well within its absolute maximum ratings.

Does the MRF8S9200NR3 require external input/output matching networks?

No, the MRF8S9200NR3 is internally matched for 50 Ω operation across 920–960 MHz, eliminating the need for discrete input/output matching networks in standard designs. Its series-equivalent large-signal impedance parameters are provided in the datasheet to support custom matching if required for specific PA architectures. The MRF8S9200NR3 achieves –22 dB input return loss at 940 MHz in the reference test circuit.

What is the thermal resistance junction-to-case for the MRF8S9200NR3 at 200 W CW operation?

At 200 W CW output (28 V, 1400 mA IDQ), the MRF8S9200NR3 exhibits a thermal resistance of 0.25 °C/W from junction to case. This value is measured with case temperature held at 80°C and reflects the device's optimized plastic package with four exposed source tabs. The MRF8S9200NR3's 225°C maximum junction temperature rating enables reliable operation even under high ambient thermal loads.

Is the MRF8S9200NR3 suitable for Doherty amplifier configurations?

Yes, the MRF8S9200NR3 is explicitly optimized for Doherty applications, featuring greater negative gate-source voltage range for improved Class C peaking operation, symmetric third-order intermodulation behavior (≥15 MHz IMD symmetry bandwidth), and broadband gain flatness (0.7 dB over 40 MHz). These characteristics allow precise carrier-peaking alignment and efficient power combining in MRF8S9200NR3-based Doherty PAs.

What ESD protection level does the MRF8S9200NR3 provide?

The MRF8S9200NR3 provides integrated ESD protection rated at Human Body Model Class 2 (≥2 kV), Machine Model Class A, and Charge Device Model Class IV. This protection is verified per JESD22-A114, JESD22-A115, and JESD22-C101 standards. The ESD-hardened gate structure allows safe handling and assembly without special precautions beyond standard ESD-safe practices, and is integral to the MRF8S9200NR3's reliability in field-deployed infrastructure.