NXP Semiconductors MRF24G300HS-2450

Overview

MRF24G300HS-2450 from NXP Semiconductors is a 300 W continuous-wave GaN-on-SiC RF power transistor optimized for industrial, scientific, and medical (ISM) applications at 2450 MHz. It delivers 332 W output power, 15.2 dB power gain, and 73.0% drain efficiency at 48 V_DD, –5 V_GS(A+B), with rugged load mismatch tolerance up to VSWR >20:1. It is used in microwave ablation systems requiring high reliability under pulsed RF stress.

For engineers reviewing the MRF24G300HS-2450 datasheet, MRF24G300HS-2450 pinout, MRF24G300HS-2450 application, or MRF24G300HS-2450 equivalent, key selection criteria include guaranteed 2400–2500 MHz CW performance, thermal resistance of 0.52 °C/W (IR), gate threshold voltage of –3.16 V (typ), and qualification for operation up to +55 V_DD.

Technical Context

This dual-gate GaN HEMT operates in depletion mode and requires precise bias sequencing: gate pre-bias to –5 V before applying 48 V_DD, then RF input. Its symmetrical A/B gate structure supports single-ended or push-pull configurations without external combining networks.

Thermal design is critical: maximum channel temperature is rated at 350 °C, but reliability modeling (MTTF = 10^{[–10.3 + 8263/(T+273)]}) mandates use of R_θCHC(FEA) = 0.72 °C/W for lifetime estimation. Input matching is integrated, simplifying 50 Ω system integration across the 2400–2500 MHz band.

Key Specifications

Pinout & Package

The MRF24G300HS-2450 is housed in the NI-780S-4L air-cavity ceramic package with metalized backside acting as the common source terminal. The package features four leads: two drains (A/B), two gates (A/B), and thermally enhanced baseplate contact.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CGHV1F025S and BLF2425M9LS, the MRF24G300HS-2450 delivers 82 W more output power than either alternative while maintaining identical package footprint and exceeding both in load mismatch resilience-critical for ablation and plasma systems where impedance varies dynamically.

Availability

MRF24G300HS-2450 is available at Aetrix Electronics and suitable for industrial heating, medical microwave ablation, and plasma generation requiring stable component supply, long-lifecycle assurance, and traceable GaN wafer lots.

Supply support for MRF24G300HS-2450 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 focused on secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in RF power technologies since the Philips era.

The MRF24G300HS-2450 belongs to NXP's high-power GaN transistor product line, engineered specifically for 2.4 GHz ISM-band solid-state replacement of vacuum tubes in demanding thermal and reliability-critical environments.

FAQ

What is the recommended gate bias sequence for safe operation of the MRF24G300HS-2450?

The MRF24G300HS-2450 requires strict depletion-mode bias sequencing: first apply –5 V_GS to both gates, then ramp V_DD to 48 V, then set operating I_DS via gate voltage adjustment, and finally apply RF input. Reversing this order risks catastrophic failure. The MRF24G300HS-2450 datasheet (Rev. 0, Sept. 2019) specifies this sequence explicitly in the "Correct Biasing Sequence" note on page 3.

Does the MRF24G300HS-2450 support push-pull configuration, and how is it implemented?

Yes, the MRF24G300HS-2450 supports true push-pull operation using independent Gate A and Gate B terminals. Each side is fully characterized and matched; differential drive with 180° phase shift enables harmonic suppression and doubled output power without external combiners. The MRF24G300HS-2450 reference circuit documentation confirms symmetrical performance across both sides in Table 4 and Figure 7.

What is the maximum allowable case temperature for continuous operation of the MRF24G300HS-2450?

The MRF24G300HS-2450 has a case operating temperature range of –55 °C to +150 °C per Table 1. However, for reliable 300 W CW operation, NXP recommends limiting case temperature to ≤125 °C to maintain MTTF >10⁵ hours, as shown in Figure 2. Exceeding 125 °C accelerates degradation per the channel temperature model applied to the MRF24G300HS-2450.

Is the MRF24G300HS-2450 pin-compatible with the MRF24G300H variant?

No, the MRF24G300HS-2450 and MRF24G300H are not pin-compatible. The MRF24G300HS-2450 uses the NI-780S-4L package (4-lead, symmetrical layout), while the MRF24G300H uses NI-780H-4L (different lead pitch and thermal pad geometry). Both are documented in the same datasheet but require distinct PCB footprints and thermal designs.

How is thermal resistance measured for the MRF24G300HS-2450, and which value should be used for reliability analysis?

The MRF24G300HS-2450 specifies two thermal resistances: R_θJC(IR) = 0.52 °C/W (infrared measurement, for heatsink interface design) and R_θCHC(FEA) = 0.72 °C/W (finite element analysis, for channel-to-case reliability modeling). For MTTF estimation and lifetime prediction, only R_θCHC(FEA) must be used, as stated in Note 3 of Table 2 in the MRF24G300HS-2450 datasheet.