NXP Semiconductors MRFE6VP61K25HR5

Overview

MRFE6VP61K25HR5 from NXP Semiconductors (formerly Freescale) is a high-ruggedness, 50 V, 1250 W CW RF power LDMOS transistor optimized for broadband operation from 1.8 to 600 MHz. It delivers 27 dB gain and 84% drain efficiency at 81.36 MHz CW, supports unmatched input/output matching, and is qualified for industrial plasma exciters, FM broadcast transmitters, and land mobile radio amplifiers.

For engineers reviewing the MRFE6VP61K25HR5 datasheet, MRFE6VP61K25HR5 pinout, MRFE6VP61K25HR5 application, or MRFE6VP61K25HR5 equivalent, this page provides verified electrical specifications, thermal performance data, ruggedness validation at >65:1 VSWR, push-pull configuration guidance, and package-specific layout constraints for high-power RF amplifier design.

Technical Context

This dual-gate, dual-drain LDMOS device operates in enhancement-mode with gate threshold voltage of 1.7–2.7 V and supports both single-ended and push-pull configurations. Its series-equivalent large-signal impedance is characterized across 1.8–600 MHz - e.g., Z_source = 1.29 + j3.54 Ω and Z_load = 2.12 + j2.68 Ω at 230 MHz pulse operation.

The transistor features integrated ESD protection (HBM Class 2, CDM Class IV), operates up to 225 °C junction temperature, and is thermally rated for 0.15 °C/W junction-to-case resistance under 1250 W CW conditions at T_C = 63 °C. It is characterized from 30 V to 50 V drain supply for extended power range control.

Key Specifications

Pinout & Package

MRFE6VP61K25HR5 is housed in the NI-1230H-4S overmolded ceramic package (1.70″ × 1.45″ × 0.25″), with source connected to the metal backside flange. The 4-pin top-side layout supports symmetrical push-pull mounting and thermal conduction via soldered flange.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MRFE6VP61K25HR5, the HSR5 variant offers identical RF specs in a gull-wing package for alternative assembly methods, while the GSR5 adds gold plating for harsh-environment reliability - neither is pin-compatible due to differing mechanical form factors and thermal mounting requirements.

Availability

MRFE6VP61K25HR5 is available at Aetrix Electronics and suitable for FM broadcast transmitters, industrial plasma exciters, and aerospace HF communications systems requiring stable component supply, full traceability, and long-lifecycle support.

Supply support for MRFE6VP61K25HR5 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 robust, high-efficiency semiconductor devices for mission-critical wireless infrastructure.

The MRFE6VP61K25HR5 belongs to NXP's wideband RF power LDMOS family, engineered specifically for high-VSWR resilience and broadband operation in broadcast, industrial, and defense transmitters - not general-purpose switching or logic applications.

FAQ

What is the maximum continuous drain current rating for MRFE6VP61K25HR5?

The MRFE6VP61K25HR5 does not specify a maximum continuous drain current (I_D) rating in its datasheet. Instead, it is characterized by power dissipation limits: total device dissipation is 1333 W at T_C = 25 °C, derating at 6.67 W/°C above that temperature. Actual I_D depends on operating V_DS, duty cycle, and thermal management - for example, at 50 V and 1250 W CW, average I_D ≈ 25 A, but peak pulsed current exceeds 100 A.

Can MRFE6VP61K25HR5 be operated at 30 V drain supply?

Yes, MRFE6VP61K25HR5 is explicitly characterized from 30 V to 50 V for extended power range control. At 30 V, typical CW output power drops to ~600 W at 230 MHz, with reduced gain (~22 dB) and efficiency (~60%), enabling flexible supply scaling for lower-power modes or staged amplifier architectures without changing the transistor.

Does MRFE6VP61K25HR5 require external gate protection diodes?

No, MRFE6VP61K25HR5 integrates ESD protection meeting HBM Class 2 (3500 V), MM Class B (250 V), and CDM Class IV (4000 V) standards. External gate protection is not required for normal handling or circuit operation, though transient-suppression networks may still be used in high-noise RF environments per system-level EMC requirements.

What is the recommended gate bias voltage for Class AB operation of MRFE6VP61K25HR5?

The gate quiescent voltage (V_GS(Q)) for MRFE6VP61K25HR5 is specified as 1.9–2.9 V at V_DD = 50 V and I_DQ = 100 mA. For stable Class AB operation, a precision bias network targeting 2.2 V ±0.1 V is recommended, using temperature-compensated reference circuits to maintain I_DQ stability across −30 °C to +85 °C ambient.

Is the backside flange of MRFE6VP61K25HR5 electrically isolated?

No, the backside flange of MRFE6VP61K25HR5 is the source terminal for both internal transistor cells. It must be electrically connected to RF ground and thermally bonded to the heatsink using conductive thermal interface material. Insulating the flange will cause catastrophic failure due to floating source potential and thermal runaway.