NXP Semiconductors MRFE6S9135HSR3

Overview

MRFE6S9135HSR3 from NXP Semiconductors (formerly Freescale) is an N-channel enhancement-mode lateral RF power MOSFET optimized for broadband base station amplifiers operating up to 1000 MHz. It delivers 39 W average output power at 940 MHz under W-CDMA conditions (28 V, 1000 mA IDQ), with 21 dB power gain, 32.3% drain efficiency, and -39.5 dBc ACPR at ±5 MHz offset in 3.84 MHz channel bandwidth - enabling high-linearity, high-efficiency macrocell and microcell PA stages.

For engineers reviewing the MRFE6S9135HSR3 datasheet, MRFE6S9135HSR3 pinout, MRFE6S9135HSR3 application, or MRFE6S9135HSR3 equivalent, key selection criteria include its 940 MHz W-CDMA performance, rugged 10:1 VSWR capability at 32 V, integrated ESD protection (HBM Class II), NI-880 package with source-grounded flange, and Doherty-optimized internal matching.

Technical Context

This device operates as a common-source RF power amplifier stage in 28 V base station transmitters. Its lateral LDMOS structure supports high peak-to-average ratio (PAR) signal handling (6.4 dB @ 0.01% CCDF), wide video bandwidth (10 MHz at 160 W PEP), and stable gain flatness (0.3 dB over 40 MHz). Internally matched input/output impedances simplify PCB layout while maintaining broadband operation from 920–960 MHz.

Thermal design is enabled by low junction-to-case thermal resistance (0.48 °C/W at 39 W CW), rated junction temperature of 225°C, and flange-mounted NI-880 mechanical interface. The device is characterized with series-equivalent large-signal impedance parameters (e.g., Zsource = 2.41 − j5.58 Ω, Zload = 2.13 − j0.63 Ω at 940 MHz), supporting accurate load-pull-based PA design.

Key Specifications

Pinout & Package

MRFE6S9135HSR3 uses the NI-880 metal-ceramic flanged package (Case 465B-03, Style 1), featuring a source-connected flange for direct thermal and electrical grounding. Dimensions: 22.99–23.24 mm × 13.60–13.80 mm × 5.08 mm max height, with 3-terminal configuration.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MRFE6S9135HR3, the MRFE6S9135HSR3 offers superior thermal dissipation via larger flange area, while AFM905S targets different frequency bands and power classes - neither serves as a drop-in replacement, but both address adjacent segments of the RF power portfolio.

Availability

MRFE6S9135HSR3 is available at Aetrix Electronics and suitable for macrocell base stations, small cell transmitters, W-CDMA repeaters, and industrial RF heating systems requiring stable component supply, long-lifecycle support, and traceable sourcing.

Supply support for MRFE6S9135HSR3 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 technology inherited from Freescale.

The MRFE6S9135HSR3 belongs to NXP's LDMOS RF power transistor family, engineered specifically for high-efficiency, high-linearity cellular infrastructure amplifiers operating in sub-1 GHz bands including 800/900 MHz.

FAQ

What is the maximum DC supply voltage rating for MRFE6S9135HSR3?

The MRFE6S9135HSR3 has a maximum drain-source voltage (VDSS) rating of +66 Vdc, with recommended operating voltage up to 32 Vdc per qualification testing. It is designed for 28 V base station applications but supports transient margins up to 32 V without derating, as confirmed in Table 1 of the official datasheet.

Does MRFE6S9135HSR3 require external input/output matching networks?

No - the MRFE6S9135HSR3 is internally matched for 50 Ω operation on both input and output, as stated in Table 4 footnote and Feature list. While external tuning may optimize performance for specific frequencies or linearity targets, functional operation at 940 MHz with 39 W output is achieved using only the recommended test circuit components (e.g., ATC capacitors, Fair-Rite beads) shown in Figures 1–2.

What thermal interface requirements apply to MRFE6S9135HSR3?

The MRFE6S9135HSR3 requires direct soldering of its source-connected flange to a thermally conductive, grounded copper plane. With RθJC = 0.48 °C/W at 39 W CW, maintaining case temperature ≤80°C demands ≥15 cm² of 2 oz copper with thermal vias to inner ground layers. Mounting pressure and thermal interface material (e.g., thermal grease or phase-change pad) must comply with NI-880 mechanical specifications to avoid flange warping.

Is MRFE6S9135HSR3 suitable for Doherty amplifier configurations?

Yes - the MRFE6S9135HSR3 is explicitly optimized for Doherty applications, as highlighted in the Features section. Its high gain, broadband linearity, and ability to maintain efficiency at 6–10 dB power back-off make it ideal for main and auxiliary paths in asymmetric Doherty PAs targeting 900 MHz infrastructure deployments.

What ESD protection level does MRFE6S9135HSR3 provide?

The MRFE6S9135HSR3 incorporates integrated ESD protection rated per industry standards: Human Body Model Class II (≥2 kV), Machine Model Class A, and Charge Device Model Class IV. This eliminates the need for external ESD protection devices in most RF front-end layouts, as verified in Table 3 and confirmed in the "Features" list.