NXP Semiconductors MRFE6VP61K25HR6

Overview

MRFE6VP61K25HR6 from NXP Semiconductors (formerly Freescale) is a high-ruggedness 50 V LDMOS RF power transistor designed for broadband industrial, broadcast, and aerospace amplifiers operating from 1.8 to 600 MHz. It delivers 1250 W peak output at 230 MHz under pulse conditions (100 µs, 20% duty), with 24.0 dB power gain and 74.0% drain efficiency. Its unmatched input/output enables wideband matching in FM broadcast, DVB-T, and plasma exciter systems.

For engineers reviewing the MRFE6VP61K25HR6 datasheet, MRFE6VP61K25HR6 pinout, MRFE6VP61K25HR6 application, or MRFE6VP61K25HR6 equivalent, key selection criteria include its 225 °C max junction temperature, >65:1 load VSWR tolerance at 230 MHz, 0.15 °C/W thermal resistance (CW), dual-gate/dual-drain configuration, and NI-1230H-4S package compatibility with high-power microstrip layouts.

Technical Context

This device is a laterally diffused metal-oxide-semiconductor (LDMOS) transistor optimized for high-voltage, high-efficiency RF power amplification. It operates in enhancement-mode with gate threshold voltage of 1.7–2.7 V and supports both single-ended and push-pull configurations using its symmetrical dual-gate/dual-drain structure.

Its series-equivalent large-signal impedance characterization-e.g., Z_source = 1.29 + j3.54 Ω and Z_load = 2.12 + j2.68 Ω at 230 MHz pulse-is validated for production test circuits and reference designs across 87.5–108 MHz FM, 144–148 MHz land mobile, and 230 MHz industrial bands.

Key Specifications

Pinout & Package

The MRFE6VP61K25HR6 is housed in the NI-1230H-4S flanged ceramic/metal package (1.230" × 1.230", 0.250" height), with source connected to the metal baseplate. The backside serves as the common source terminal for both transistor cells.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MRFE6VP61K25HR5 and MRFE6VP61K25HSR5, the MRFE6VP61K25HR6 offers identical RF performance and ruggedness but provides higher unit density per reel (150 pcs), making it optimal for high-volume production lines where feeder change frequency and material handling efficiency matter.

Availability

MRFE6VP61K25HR6 is available at Aetrix Electronics and suitable for FM broadcast transmitters, industrial plasma exciters, and aerospace communication systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for MRFE6VP61K25HR6 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 leader in high-performance RF power solutions, formed from the acquisition of Freescale Semiconductor in 2015. It specializes in silicon and GaN RF transistors for mission-critical infrastructure.

The MRFE6VP61K25HR6 belongs to NXP's MRFE6VP6xK25 family of 50 V LDMOS transistors engineered for ultra-high-ruggedness broadband amplification in broadcast, industrial heating, and defense systems where reliability under extreme VSWR is non-negotiable.

FAQ

What is the maximum continuous drain current rating for MRFE6VP61K25HR6?

The MRFE6VP61K25HR6 does not specify a maximum continuous drain current (I_D) rating in its datasheet. Instead, it defines safe operating limits via total device dissipation (1333 W at T_C = 25 °C), junction temperature (225 °C), and thermal resistance (0.15 °C/W). Actual I_D depends on V_DS, duty cycle, and thermal management - for example, at 50 V and 1250 W CW, average I_D ≈ 25 A, but peak pulse current exceeds 100 A. Always verify thermal design using the MTTF calculator provided by NXP.

Can MRFE6VP61K25HR6 be operated at 30 V instead of 50 V?

Yes, the MRFE6VP61K25HR6 is characterized and qualified for operation from 30 V to 50 V DC supply. At 30 V, it delivers reduced output power (e.g., ~600 W CW at 230 MHz) with lower gain (~22 dB) and efficiency (~60%), enabling flexible power scaling and improved linearity in Class A or AB modes. The device maintains full ruggedness and thermal specifications across this range, as confirmed in Table 4 and Figure 7 of the datasheet.

Is MRFE6VP61K25HR6 pin-compatible with MRFE6VP61K25HSR5?

No, MRFE6VP61K25HR6 is not pin-compatible with MRFE6VP61K25HSR5. The HR6 uses the NI-1230H-4S flanged ceramic/metal package with gull-wing–free leads, while the HSR5 uses the NI-1230S-4S gull-wing variant. Their pinouts differ mechanically: HR6 has straight leads for bolt-down mounting; HSR5 has bent leads for solder-reflow attachment. PCB layout, heatsinking, and thermal interface must be redesigned for HSR5 - they are functionally equivalent but not mechanically interchangeable.

What is the recommended gate bias voltage for linear operation of MRFE6VP61K25HR6?

The recommended gate quiescent voltage (V_GS(Q)) for linear operation of MRFE6VP61K25HR6 is 1.9–2.9 Vdc at V_DD = 50 V and I_DQ = 100 mA, with a typical value of 2.2 Vdc. For higher-linearity applications like OFDM or multi-carrier signals, biasing at I_DQ = 200–2500 mA (e.g., 200 mA for FM broadcast, 2500 mA for land mobile) is required - achieved by adjusting V_GS(Q) accordingly (e.g., ~2.5 V for 200 mA, ~3.8 V for 2500 mA). Always use active bias stabilization circuits due to V_GS(th) drift with temperature.

Does MRFE6VP61K25HR6 require external ESD protection in circuit design?

No, MRFE6VP61K25HR6 integrates on-die ESD protection meeting HBM Class 2 (3500 V), MM Class B (250 V), and CDM Class IV (4000 V) standards. External ESD protection is not required for handling or board-level robustness under normal conditions. However, RF input/output ports remain susceptible to fast transient events (e.g., lightning-induced surges), so front-end filtering and gas discharge tubes are still recommended in outdoor or high-energy environments - independent of the transistor's internal ESD structures.