NXP Semiconductors MRF5S9100NBR1

Overview

MRF5S9100NBR1 from NXP Semiconductors (formerly Freescale) is an N-channel enhancement-mode lateral RF power MOSFET designed for broadband common-source amplifier applications in 26 V base station equipment operating up to 1000 MHz. It delivers 20 W average output power at 880 MHz under N-CDMA modulation, with 19.5 dB power gain, 28% drain efficiency, and -46.8 dBc ACPR at ±750 kHz offset - optimized for cellular infrastructure transmitters.

For engineers reviewing the MRF5S9100NBR1 datasheet, MRF5S9100NBR1 pinout, MRF5S9100NBR1 application, or MRF5S9100NBR1 equivalent, this device requires attention to gate bias stability, thermal management at 200°C junction rating, VSWR ruggedness up to 10:1, internal input matching, and lead-free termination compliance per RoHS.

Technical Context

This device operates as a single-ended, large-signal RF power amplifier stage with internally matched 5 Ω source and load impedance networks at 880 MHz. Its lateral MOSFET architecture supports high linearity under N-CDMA modulation while maintaining robustness against mismatched loads.

It features integrated ESD protection rated Class 1C (HBM), qualified for 32 VDD operation, and characterized using series-equivalent large-signal impedance parameters - enabling direct integration into 50 Ω systems without external input matching networks.

Key Specifications

Pinout & Package

Package: TO-270 WB-4 (Case 1486-03, Style 1), plastic surface-mount package with exposed heat slug for thermal conduction. Pin 1–2: Drain; Pin 3–4: Gate; Pin 5: Source.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MRF5S9100NBR1, MRF5S9100NR1 offers identical RF performance with simplified packaging logistics, while MRFE6VP61K25H provides superior power density and efficiency but demands full circuit redesign - making MRF5S9100NBR1 optimal for cost-sensitive, legacy 880 MHz infrastructure upgrades.

Availability

MRF5S9100NBR1 is available at Aetrix Electronics and suitable for cellular infrastructure, ISM band transmitters, and avionics communication systems requiring stable component supply, long-lifecycle support, and RoHS-compliant manufacturing.

Supply support for MRF5S9100NBR1 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

NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and communications markets, with deep heritage in RF power from its Freescale acquisition.

The MRF5S9100NBR1 belongs to NXP's legacy RF Power MOSFET product line, engineered specifically for high-reliability, high-efficiency cellular base station amplifiers operating below 1 GHz.

FAQ

What is the maximum drain voltage rating for MRF5S9100NBR1?

The MRF5S9100NBR1 has a maximum drain-source voltage (V_DSS) rating of +68 Vdc, with qualification extended to 32 VDD operation under normal switching conditions. This allows safe margin for transient voltage spikes in 26 V base station supplies and supports testing at elevated bias points without device failure.

Does MRF5S9100NBR1 require external input matching?

No, MRF5S9100NBR1 is internally matched for 50 Ω input impedance at 880 MHz, eliminating the need for external input matching networks in standard applications. The datasheet confirms "Part is internally input matched" and provides series-equivalent source impedance data (e.g., 2.8 − j1.9 Ω at 880 MHz) to validate matching integrity.

What thermal interface material is recommended for MRF5S9100NBR1?

For MRF5S9100NBR1, a thermally conductive, electrically insulating interface material with ≤0.2°C·in²/W thermal resistance is recommended - such as Laird T-flex 400 or Parker Chomerics CHO-THERM 5500. This ensures the specified R_θJC = 0.52°C/W is achieved, keeping junction temperature below 200°C at 20 W avg. output with 80°C case temperature.

Is MRF5S9100NBR1 pin-compatible with MRF5S9100MR1?

Yes, MRF5S9100NBR1 shares identical TO-270 WB-4 package (Case 1486-03), pinout (Pins 1–2: Drain, 3–4: Gate, 5: Source), and mechanical dimensions with MRF5S9100MR1. The NBR1 variant adds lead-free terminations and updated marking but maintains full form, fit, and function compatibility per Freescale archive notice.

What is the gate threshold voltage range for MRF5S9100NBR1?

The gate threshold voltage (V_GS(th)) for MRF5S9100NBR1 is specified from 2.0 Vdc to 3.5 Vdc (typical 2.8 Vdc) at V_DS = 10 Vdc and I_D = 400 μA. This range ensures stable turn-on behavior across process variation and supports standard 3.3 V or 5 V gate driver circuits without level-shifting.