NXP Semiconductors MRF7S15100HSR3

Overview

MRF7S15100HSR3 from NXP Semiconductors (formerly Freescale) is an N-channel enhancement-mode lateral RF power MOSFET designed for CDMA and W-CDMA base station final-stage amplification in the 1470–1510 MHz band. It delivers 23 W average output power at 28 V, 19.5 dB power gain, and 32% drain efficiency under single-carrier W-CDMA conditions (1507.5 MHz, 3.84 MHz channel BW, 7.5 dB PAR), optimized for Class AB/C and Doherty architectures.

For engineers reviewing the MRF7S15100HSR3 datasheet, MRF7S15100HSR3 pinout, MRF7S15100HSR3 application, or MRF7S15100HSR3 equivalent, key selection criteria include guaranteed 100 W CW P1dB, 10:1 VSWR ruggedness at 32 V, integrated ESD protection (HBM Class 1C), internal input/output matching, and NI-780 package thermal performance (RθJC = 0.65°C/W @ 55 W).

Technical Context

This device employs a laterally diffused MOS (LDMOS) structure with series-equivalent large-signal impedance characterization across 1410–1570 MHz. Its gate threshold voltage (1.2–2.7 V) and quiescent gate voltage (2.0–3.5 V) support stable Class C biasing, while the −6.0 to +10 V gate-source rating enables robust negative-VGS operation for improved linearity control.

The internally matched design eliminates external broadband matching networks for fundamental-band operation; source and load impedances are specified as complex values (e.g., Zsource = 2.62 − j4.97 Ω, Zload = 3.45 − j3.65 Ω at 1490 MHz), enabling precise Doherty combiner integration and load-pull optimization.

Key Specifications

Pinout & Package

Package: NI-780 (Case 465-06, Style 1), flanged ceramic/metal hermetic package with solderable baseplate. Thermal resistance optimized for high-power RF operation; case temperature rated to 150°C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MRF7S15100HSR3, MRF7S15100HR3 offers identical RF performance in a smaller NI-780S package with marginally reduced thermal efficiency, while AFM70205-001 trades off gain and ESD integration for broader frequency coverage and higher CW power-neither is pin-compatible, requiring layout changes and re-characterization.

Availability

MRF7S15100HSR3 is available at Aetrix Electronics and suitable for macrocell base stations, distributed antenna systems, active antenna arrays, and multi-standard aggregation platforms requiring stable component supply, long-lifecycle support, and traceable RF power transistor sourcing.

Supply support for MRF7S15100HSR3 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 acquired Freescale's RF Power business in 2015, inheriting its leadership in cellular infrastructure LDMOS technology with focus on reliability, efficiency, and ruggedness for mission-critical wireless infrastructure.

The MRF7S15100HSR3 belongs to NXP's high-efficiency RF power transistor product line, engineered specifically for 3G/4G base station final amplifiers demanding high linearity, thermal resilience, and VSWR tolerance in outdoor macrocell and distributed environments.

FAQ

What is the maximum continuous drain voltage rating for the MRF7S15100HSR3?

The MRF7S15100HSR3 has a maximum drain-source voltage (VDSS) rating of +65 Vdc, with a minimum of −0.5 Vdc. This rating allows safe operation up to 32 Vdc supply (VDD) while accommodating transient voltage spikes and RF signal swing during high-power amplification. The device is characterized and tested at 28 Vdc for W-CDMA applications, and its 32 Vdc operating voltage limit is explicitly defined in Table 1 of the datasheet.

Does the MRF7S15100HSR3 require external matching networks for 1470–1510 MHz operation?

No, the MRF7S15100HSR3 is internally matched for both input and output in the 1470–1510 MHz band, as confirmed in Table 4 footnote and Figure 12 impedance data. Its design eliminates the need for external broadband matching components in standard 50 Ω test fixtures, though narrowband tuning may still be applied for specific ACPR or efficiency targets. The series-equivalent source and load impedances (e.g., Zsource = 2.62 − j4.97 Ω at 1490 MHz) are provided to guide Doherty combiner or harmonic trap integration.

What is the thermal resistance (RθJC) of the MRF7S15100HSR3 under typical operating conditions?

The MRF7S15100HSR3 has a thermal resistance from junction to case (RθJC) of 0.65°C/W when operated at 55 W CW with case temperature at 80°C, per Table 2. This value is measured under controlled thermal test conditions and enables accurate junction temperature calculation (TJ = TC + P × 0.65). At lower power levels like 23 W avg W-CDMA, the effective RθJC remains consistent, supporting reliable thermal design for air-cooled macrocell deployments.

Is the MRF7S15100HSR3 suitable for Doherty amplifier configurations?

Yes, the MRF7S15100HSR3 is explicitly optimized for Doherty applications, as stated in the Features section. Its greater negative gate-source voltage range (−6.0 V) improves Class C peaking amplifier control, and its characterized IMD symmetry (≥40 MHz) and VBW resonance point (70 MHz) support balanced carrier/peaking response. The device's series-equivalent impedance data across frequency further enables precise load modulation network design for Doherty efficiency enhancement.

What ESD protection level does the MRF7S15100HSR3 provide, and how is it verified?

The MRF7S15100HSR3 provides HBM Class 1C (≥1.5 kV), Machine Model Class A, and CDM Class IV ESD protection, verified per JESD22-A114, JESD22-A115, and JESD22-C101 standards respectively (Table 3). This integrated protection eliminates the need for external ESD suppression components in most assembly and field environments, and every unit undergoes 100% PAR testing that inherently validates gate robustness under real-world signal stress conditions.