NXP Semiconductors MRF7S16150HR3

Overview

MRF7S16150HR3 from Freescale Semiconductor is an N-channel enhancement-mode lateral RF power MOSFET designed for WiMAX base station amplifiers operating at 1600–1660 MHz. It delivers 32 W average RF output power at 28 Vdc, 1500 mA quiescent drain current, with 19.7 dB power gain and −47.5 dBc ACPR at 5.25 MHz offset under 802.16d 64-QAM 3/4 signal conditions.

For engineers reviewing the MRF7S16150HR3 datasheet, MRF7S16150HR3 pinout, MRF7S16150HR3 application, or MRF7S16150HR3 equivalent, this device is selected for high-efficiency Class AB/C multicarrier OFDM amplifier stages where drain efficiency (25.4%), ruggedness (10:1 VSWR tolerance), and PAR handling (8.2 dB @ 0.01% CCDF) are critical in WiBro and BWA infrastructure.

Technical Context

This LDMOS transistor operates with internally matched input and output impedances optimized for 1600–1660 MHz WiMAX bands. Its gate threshold voltage (1.2–2.7 Vdc) and quiescent gate voltage (2.0–3.5 Vdc) support stable Class C biasing, while integrated ESD protection meets HBM Class IC, MM Class A, and CDM Class IV standards.

Thermal design is enabled by a low junction-to-case thermal resistance of 0.34 °C/W at 149 W CW, with maximum junction temperature rated at 225°C and case temperature limited to 150°C. The device sustains 150 W CW output at 1 dB compression and handles 10:1 VSWR at 32 Vdc and 1630 MHz without damage.

Key Specifications

Pinout & Package

Package: NI-780 (Case 465-06, Style 1), flanged ceramic/metal hermetic package with copper-tungsten baseplate for high thermal conductivity and RF grounding. Dimensions: 33.91 × 9.65 × 4.32 mm (L × W × H), 3-terminal configuration.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MRF7S16150HR3, the MRF7S16150HSR3 offers identical RF performance in a smaller NI-780S package for denser layouts, while the PD57018-E trades output power and bandwidth for lower cost and simpler thermal management in sub-20 W applications.

Availability

MRF7S16150HR3 is available at Aetrix Electronics and suitable for WiMAX base station infrastructure, WiBro uplink transmitters, and BWA point-to-multipoint hubs requiring stable component supply, long-lifecycle support, and RoHS-compliant high-power RF transistors.

Supply support for MRF7S16150HR3 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 MRF7S16150HR3 belongs to Freescale's MRF7S family of laterally diffused MOSFETs engineered specifically for high-efficiency, high-linearity multicarrier OFDM amplification in 1.5–2.7 GHz base station transceivers.

FAQ

What is the maximum continuous drain current rating for the MRF7S16150HR3?

The MRF7S16150HR3 does not specify a maximum continuous drain current (ID) rating independent of thermal conditions. Its safe operating area is defined by junction temperature (225°C max), case temperature (150°C max), and thermal resistance (0.34 °C/W). At 149 W CW with 80°C case temperature, the device operates at ~1500 mA IDQ in typical WiMAX test conditions - actual ID depends on bias point and thermal design. Always verify current under your specific VDD, Pout, and heatsink conditions using Freescale's MTTF calculator.

Does the MRF7S16150HR3 require external input/output matching networks?

No, the MRF7S16150HR3 is internally matched for 50 Ω systems across 1600–1660 MHz. Freescale provides series-equivalent source and load impedances (e.g., Zsource = 0.96 − j3.07 Ω at 1600 MHz) to guide external microstrip or lumped-element tuning if needed for narrowband optimization. The reference test circuit achieves full specification performance without discrete matching components beyond DC blocking and bypass capacitors.

What is the gate voltage range required to achieve Class C operation with the MRF7S16150HR3?

The MRF7S16150HR3 supports Class C operation via its extended gate-source voltage range of −6.0 to +10 Vdc. For stable Class C biasing, gate quiescent voltage (VGS(Q)) is specified at 2.0–3.5 Vdc under 28 Vdd and 1500 mA IDQ. Applying negative VGS (e.g., −1 to −3 Vdc) shifts the conduction angle, improving efficiency at the expense of linearity - verified in Freescale's characterization data showing enhanced drain efficiency with deeper cutoff.

Can the MRF7S16150HR3 be used in pulsed RF applications outside WiMAX bandwidth?

Yes, the MRF7S16150HR3 is characterized for broadband operation from 1500–1700 MHz and supports pulsed RF use cases. Its 150 W CW P1dB and 180 W PEP capability, combined with 20 MHz video bandwidth at 180 W PEP, make it suitable for radar, test instrumentation, and broadband jammer applications - provided thermal management, gate drive stability, and load VSWR remain within datasheet limits (e.g., ≤10:1 VSWR, TC ≤150°C).

How does the MRF7S16150HR3 compare to GaN alternatives in WiMAX base station designs?

The MRF7S16150HR3 delivers proven reliability and mature thermal models for 28 Vdc WiMAX PAs, whereas GaN devices typically require 48–50 Vdc supplies and more complex gate biasing. While GaN offers higher gain and efficiency above 2 GHz, the MRF7S16150HR3 remains preferred for cost-sensitive, volume-deployed 1.6 GHz infrastructure where LDMOS ruggedness, established qualification, and 10:1 VSWR tolerance reduce system-level protection overhead. Its 25.4% efficiency and −47.5 dBc ACPR meet Tier-1 operator specifications without GaN's gate charge sensitivity.