NXP Semiconductors MRFE6VS25NR1

Overview

MRFE6VS25NR1 from NXP Semiconductors is a 25 W, 50 V RF power LDMOS transistor designed for narrowband ISM, broadcast, and aerospace amplifiers operating at 512 MHz. It delivers 25.5 dB power gain and 74.7% drain efficiency in CW mode, with ruggedness validated at >65:1 VSWR under 3 dB overdrive. Its TO-270-2 plastic package supports high-power RF final-stage amplification in industrial transmitters.

For engineers reviewing the MRFE6VS25NR1 datasheet, MRFE6VS25NR1 pinout, MRFE6VS25NR1 application, or MRFE6VS25NR1 equivalent, key selection criteria include its 512 MHz narrowband test circuit validation, 1.2 °C/W thermal resistance (CW), integrated ESD protection (HBM Class 2), and gate-source voltage range of 1.5–2.5 Vdc at turn-on.

Technical Context

The MRFE6VS25NR1 is an enhancement-mode, N-channel lateral MOSFET fabricated on NXP's high-ruggedness platform. It operates with 50 Vdc drain supply and 10 mA quiescent drain current, optimized for narrowband matching at 512 MHz where source impedance is 1.56 + j11.6 Ω and load impedance is 9.5 + j18.3 Ω.

Its design integrates stability enhancements and low thermal resistance to sustain operation at junction temperatures up to +225 °C. The device exhibits 0.26 pF reverse transfer capacitance and 39.2 pF input capacitance at 1 MHz, enabling stable broadband matching across 1.8–2000 MHz when used in appropriate reference circuits.

Key Specifications

Pinout & Package

MRFE6VS25NR1 uses the TO-270-2 plastic over-molded package. The backside of the package is electrically connected to the source terminal. Mounting requires bolt-down or clamping per AN3263/AN3789; solder reflow is not recommended (AN1907).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MRFE6VS25NR1, MRFE6VS25GNR1 offers identical RF performance but mandates SMT assembly, while MRF6V2010NR1 trades output power for higher gain and lower thermal load-making it viable only in cascaded amplifier topologies where 25 W is not required at the final stage.

Availability

MRFE6VS25NR1 is available at Aetrix Electronics and suitable for UHF broadcast transmitters, aerospace radar systems, ISM industrial heaters, and avionics communication amplifiers requiring stable component supply and long-term production continuity.

Supply support for MRFE6VS25NR1 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 specializing in secure connectivity solutions for automotive, industrial, and communications markets.

The MRFE6VS25NR1 belongs to NXP's RF Power LDMOS Transistor product line, engineered for high-ruggedness, high-efficiency RF amplification in mission-critical ISM, broadcast, and aerospace systems operating from 1.8 to 2000 MHz.

FAQ

What is the maximum junction temperature rating for the MRFE6VS25NR1?

The MRFE6VS25NR1 has a maximum operating junction temperature (TJ) of +225 °C, as specified in Table 1. This rating enables reliable operation in high-ambient environments such as enclosed broadcast cabinets or avionics bays, provided thermal design maintains case temperature ≤ +150 °C and accounts for the 1.2 °C/W RθJC value under CW conditions. Derating is required above 80 °C case temperature.

Does the MRFE6VS25NR1 require external gate protection diodes?

No, the MRFE6VS25NR1 incorporates extended ESD protection circuitry validated to HBM Class 2 (2500 V), Machine Model Class B (250 V), and CDM Class IV (2000 V). External gate protection diodes are not required for standard handling or circuit operation, though proper PCB layout (short gate traces, local decoupling) remains essential to preserve stability and prevent oscillation.

Can the MRFE6VS25NR1 be used in broadband applications outside the 512 MHz narrowband test circuit?

Yes-the MRFE6VS25NR1 is explicitly characterized for broadband use from 1.8 to 2000 MHz using NXP's three reference circuits: 1.8–30 MHz, 30–512 MHz, and 1030 MHz narrowband. Its unmatched design and integrated stability enhancements allow deployment across these bands, though matching networks must be redesigned per frequency band using the published Zsource/Zload impedances in Figures 10, 20, 31, and 37.

What is the gate-source leakage current specification for the MRFE6VS25NR1?

The MRFE6VS25NR1 specifies a maximum gate-source leakage current (IGSS) of 400 nAdc at VGS = 5 Vdc and VDS = 0 Vdc, per Table 5. This ultra-low leakage ensures minimal gate bias drift and stable Class AB operation over temperature and time, supporting precision bias networks with high-value resistors (e.g., 100 kΩ–1 MΩ) without significant error.

How does the MRFE6VS25NR1's ruggedness testing differ between narrowband and broadband configurations?

Ruggedness testing for the MRFE6VS25NR1 is performed in both configurations: at 512 MHz narrowband (Table 5, >65:1 VSWR with 0.14 W input), and at 30 MHz broadband (Table 10, >65:1 VSWR with 0.23 W input). The narrowband test uses the specific microstrip layout in Table 8, while the broadband test employs the 1.8–30 MHz reference circuit in Figure 11-both confirming no device degradation under extreme mismatch.