NXP Semiconductors MRF21010LSR1

Overview

MRF21010LSR1 from NXP Semiconductors (formerly Freescale) is a lateral N-channel enhancement-mode RF power MOSFET designed for W-CDMA base station final-stage amplification in the 2110–2170 MHz band. It delivers 10 W PEP output with 13.5 dB typical two-tone power gain, 35% drain efficiency, and –35 dBc third-order IMD at 2140 MHz under Class AB operation at 28 Vdc and 100 mA quiescent current.

For engineers reviewing the MRF21010LSR1 datasheet, MRF21010LSR1 pinout, MRF21010LSR1 application, or MRF21010LSR1 equivalent, this device is selected for high-linearity, high-efficiency RF power amplification in multicarrier cellular infrastructure where ACPR, IMD, and thermal stability are critical design constraints.

Technical Context

This device operates as a common-source broadband RF power amplifier stage with gate-controlled transconductance (g_fs = 0.95 S typical) and optimized input/output impedance matching networks. Its lateral MOSFET architecture enables stable large-signal performance across the 2110–2170 MHz band without external harmonic termination.

Thermal design centers on low junction-to-case resistance (R_θJC = 5.5 °C/W) and maximum case temperature rating of 150 °C, enabling reliable operation in forced-air or heatsink-mounted base station PA modules. The integrated ESD protection meets HBM Class 1 and MM Class M1 requirements.

Key Specifications

Pinout & Package

Package: NI-360S (CASE 360C-05, STYLE 1), surface-mount ceramic/metal hybrid package with flange for thermal mounting. Dimensions: 9.53 × 5.72 × 2.21 mm (L × W × H), 3-terminal configuration.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MRF21010LSR1, MRF21010LR1 offers identical RF performance in a thermally more robust package, while PD57018-E provides higher output power at the cost of increased supply voltage, reduced gain, and non-drop-in layout compatibility.

Availability

MRF21010LSR1 is available at Aetrix Electronics and suitable for W-CDMA base station development, TDMA/CDMA multicarrier amplifier builds, and fixed wireless access (FWA) system prototyping requiring stable component supply and RoHS-compliant sourcing.

Supply support for MRF21010LSR1 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 Semiconductor in 2015 and continues to support its RF power portfolio for cellular infrastructure applications.

The MRF21010LSR1 belongs to NXP's legacy RF Power Lateral MOSFET family, engineered specifically for high-linearity, high-efficiency W-CDMA and multicarrier amplifier stages in macrocell and microcell base stations.

FAQ

What is the maximum continuous drain current rating for the MRF21010LSR1?

The MRF21010LSR1 does not specify a maximum continuous drain current (I_D) rating. Instead, its safe operating area is defined by total device dissipation (43.75 W at T_C = 25°C, derated 0.25 W/°C above), junction temperature limit (200 °C), and case temperature limit (150 °C). Designers must calculate I_D based on actual V_DS, duty cycle, and thermal conditions using the provided R_θJC = 5.5 °C/W value. The MRF21010LSR1 is intended for pulsed or PEP-limited RF operation, not DC switching.

Does the MRF21010LSR1 require external gate protection diodes?

No, the MRF21010LSR1 integrates ESD protection rated to HBM Class 1 and MM Class M1 per JEDEC standards, eliminating the need for external gate protection diodes in standard RF PA layouts. However, proper PCB layout practices-including short gate traces, local bypassing, and controlled-impedance gate bias lines-are still required to maintain linearity and stability. The MRF21010LSR1 gate leakage remains below 1 µA at 5 V_GS, confirming robust internal protection integrity.

What is the recommended gate bias voltage for Class AB operation of the MRF21010LSR1?

The MRF21010LSR1 is specified for Class AB operation with a quiescent drain current (I_DQ) of 100 mA at V_DD = 28 Vdc, achieved using a gate quiescent voltage (V_GS(Q)) of 2.5–4.5 Vdc (typical 4.0 Vdc). This range accounts for process variation and thermal drift; designers should set V_GS via adjustable bias network (e.g., potentiometer + resistor divider as shown in Figure 3) and verify I_DQ under thermal soak. The MRF21010LSR1 gate threshold voltage (V_GS(th)) is 2.5–4.0 Vdc, confirming stable turn-on within this bias window.

Can the MRF21010LSR1 be used in 5G NR sub-6 GHz applications?

The MRF21010LSR1 is characterized and optimized exclusively for 2110–2170 MHz W-CDMA operation and is not validated for 5G NR bands such as n1 (2100 MHz) with wider bandwidths (up to 100 MHz) or higher-order modulation (256-QAM). While its small-signal gain extends beyond 2.2 GHz, its large-signal IMD, ACPR, and efficiency data are limited to 100 kHz tone spacing and 4.096 MHz W-CDMA bandwidth. For 5G NR deployment, the MRF21010LSR1 is not recommended; newer GaN or LDMOS devices with wider instantaneous bandwidth and digital predistortion support should be evaluated instead.

What is the meaning of the "S" suffix in MRF21010LSR1?

The "S" suffix in MRF21010LSR1 denotes the NI-360S package variant with 40 µ″ nominal gold plating thickness on the leads, as opposed to the standard NI-360 (non-S) version. This reduced gold thickness mitigates gold migration risk in high-humidity, high-temperature telecom environments-critical for outdoor base station reliability. The "R1" suffix indicates tape-and-reel packaging: 500 units per 32 mm wide, 13-inch reel. The MRF21010LSR1 shares identical electrical specifications and die with the MRF21010LR1 but uses the smaller CASE 360C-05 footprint.