NXP Semiconductors MRF9180R6

Overview

MRF9180R6 from Freescale Semiconductor is an N-channel enhancement-mode lateral RF power MOSFET designed for broadband common-source amplifier applications in 26 V base station equipment operating from 865 to 895 MHz. It delivers 170 W CW output power at 880 MHz, achieves 16.5 dB power gain and 55% drain efficiency under CW conditions, and supports IS-95 CDMA pilot, sync, paging, and traffic codes 8–13 in base station infrastructure.

For engineers reviewing the MRF9180R6 datasheet, MRF9180R6 pinout, MRF9180R6 application, or MRF9180R6 equivalent, this device is selected for high-power, high-linearity RF amplification where VSWR tolerance (10:1), thermal stability (T_J = 200°C), and internally matched 50 Ω input/output impedance are critical design requirements.

Technical Context

The MRF9180R6 operates as a single-ended, laterally diffused MOSFET optimized for Class AB broadband amplification. Its internal matching network enables direct 50 Ω system integration without external tuning components at 865–895 MHz, and its push-pull test configuration confirms two-tone IMD performance of –31 dBc at 170 W PEP.

Thermal management is enabled by a low R_θJC of 0.45°C/W and a case-operating temperature limit of 150°C. The device is characterized with series-equivalent large-signal impedance parameters (e.g., Z_source = 2.44 – j1.18 Ω at 880 MHz), supporting precise broadband matching network design.

Key Specifications

Pinout & Package

Package: NI-1230 (Case 375D-05, Style 1), metal-ceramic flange-mount package with integral lid and insulator; thermally optimized for conduction cooling via flange mounting.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MRF9180R6, MRF9045LR6 offers lower power and voltage compatibility but lacks the VSWR ruggedness and thermal capability for final-stage use; PD57018-E provides higher frequency margin and power but demands new mechanical and biasing implementation - neither is pin-compatible or a direct replacement.

Availability

MRF9180R6 is available at Aetrix Electronics and suitable for CDMA base station transmitters, public safety repeaters, ISM industrial RF systems, and broadband wireless access infrastructure requiring stable component supply and legacy part continuity.

Supply support for MRF9180R6 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) was a leading designer of RF power transistors for wireless infrastructure, automotive radar, and industrial RF systems before its 2015 acquisition.

The MRF9180R6 belongs to Freescale's MRF9xxx family of lateral MOSFETs engineered specifically for high-efficiency, high-linearity 800–1000 MHz base station amplifiers with rugged VSWR tolerance and simplified matching.

FAQ

What is the maximum continuous drain current rating for the MRF9180R6?

The MRF9180R6 does not specify a maximum continuous drain current (I_D) rating directly; instead, it defines maximum ratings by voltage, power, and thermal limits. At 26 V DC and 1400 mA quiescent current (I_DQ), the device delivers 170 W CW output. Its safe operating area is bounded by V_DSS = +65 V, P_D = 388 W at T_C = 25°C (derating to 2.22 W/°C above), and T_J = 200°C - all verified in Freescale's test fixture per Document MRF9180 Rev. 10.

Is the MRF9180R6 still in active production?

No, the MRF9180R6 is an archived product. Freescale Semiconductor discontinued manufacturing the MRF9180R6, as confirmed in Revision History (Rev. 10, Dec. 2009): "Data sheet archived. Part no longer manufactured." However, Aetrix Electronics maintains traceable, tested inventory for legacy base station repair, spares, and continuity programs.

What is the gate threshold voltage range for the MRF9180R6?

The MRF9180R6 has a gate threshold voltage (V_GS(th)) range of 2.0–4.0 V DC, measured at V_DS = 10 V and I_D = 300 μA, per Table 4 in the official datasheet. Its typical gate quiescent voltage (V_GS(Q)) is 3.7 V at V_DS = 26 V and I_DQ = 1400 mA - a key parameter for setting Class AB bias in production amplifiers using the MRF9180R6.

Does the MRF9180R6 require external matching networks for 50 Ω systems?

No, the MRF9180R6 is internally matched for 50 Ω input and output impedance across 865–895 MHz, as stated in its features and validated in functional test data. Freescale's reference test circuit (Figure 1) uses only microstrip lines and passive components for fine-tuning - not fundamental matching - confirming that the MRF9180R6 can operate directly into 50 Ω systems without discrete matching networks.

What is the thermal resistance from junction to case (R_θJC) for the MRF9180R6?

The MRF9180R6 has a thermal resistance of R_θJC = 0.45°C/W, specified in Table 2 of the official datasheet. This value is measured under standard mounting conditions on a copper heatsink with thermal compound and reflects the device's ability to transfer heat efficiently from the silicon die to the flange - a critical parameter for thermal design of amplifiers using the MRF9180R6.