MHT1003NR3 Equivalent & Substitute Parts

Part Overview

The MHT1003NR3 is an RF MOSFET LDMOS device manufactured by NXP USA Inc., designed for 2.4GHz to 2.5GHz applications with 250W output power and 15.9dB gain. This component operates at a rated voltage of 32V and is housed in the OM-780-2 surface mount package. The product is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new design implementations.

Substiute Parts

MHT1003NR3

NXP USA Inc.In Stock: 953MHT1003NR3 Datasheet

Current PartRFQ

MRF24G300HSR5

NXP USA Inc.In Stock: 988MRF24G300HSR5 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MHT1003NR3 is determined by alignment of the following critical parameters:

Frequency Compatibility: The substitute part must operate within the 2.4GHz to 2.5GHz band to maintain system RF performance.

Power Output Capability: The substitute must deliver equal or greater output power (minimum 250W) to support the intended application load.

Gain Performance: Gain values must be within acceptable operational range (15.3dB or higher) to ensure signal amplification requirements are met.

Voltage Rating: The substitute must support the system voltage requirements. The MHT1003NR3 operates at 32V rated voltage; substitutes with higher voltage ratings (such as 48V or 125V) are acceptable as they provide operational margin.

Package and Mounting: Surface mount configuration is required for PCB integration compatibility.

Compliance Standards: RoHS3 compliance and REACH unaffected status ensure regulatory alignment.

The MRF24G300HSR5 meets these substitution criteria through equivalent frequency range, superior power output (300W), comparable gain (15.3dB), higher voltage rating (125V), surface mount configuration, and matching compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The MRF24G300HSR5 is the manufacturer-recommended substitute for the MHT1003NR3. Both devices are manufactured by NXP USA Inc. and maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity.

Advantages of the MRF24G300HSR5:

The substitute provides 300W output power compared to the original 250W, delivering 20% additional power capacity. The GaN technology platform offers improved efficiency characteristics relative to the LDMOS technology of the original part. The rated voltage of 125V provides substantial operational margin above the 32V requirement of the original design. Moisture sensitivity is reduced to MSL 1 (Unlimited), eliminating the 168-hour storage constraint of the original part.

Design Considerations:

The package transition from OM-780-2 to NI-780S-4L requires PCB layout modification. The gain differential of 0.6dB (15.9dB to 15.3dB) is within typical system tolerance ranges for RF amplifier stages. The higher voltage rating of the substitute necessitates verification of bias network and gate drive circuit compatibility with the original design.

Both parts are classified as obsolete, indicating limited future availability. Current inventory levels are comparable (925 units for MHT1003NR3 and 922 units for MRF24G300HSR5).

Frequently Asked Questions (FAQ)

Q: Can the MRF24G300HSR5 directly replace the MHT1003NR3 without circuit modification?

A: The MRF24G300HSR5 is functionally equivalent in RF performance (frequency, gain, power output) but requires PCB layout redesign due to package differences (OM-780-2 versus NI-780S-4L). Bias and gate drive circuits must be evaluated for compatibility with the higher voltage rating (125V versus 32V).

Q: What is the significance of the technology difference between LDMOS and GaN?

A: LDMOS (Laterally Diffused Metal Oxide Semiconductor) and GaN (Gallium Nitride) are distinct semiconductor technologies. Both operate within the specified 2.4GHz to 2.5GHz frequency band and deliver the required power output. GaN technology typically offers improved efficiency and thermal performance. The selection between these technologies depends on system-level thermal management and efficiency requirements.

Q: Are there compatibility issues with the different package types?

A: Yes. The MHT1003NR3 uses the OM-780-2 package while the MRF24G300HSR5 uses the NI-780S-4L package. These are distinct surface mount packages with different pin configurations and footprints. PCB redesign is required for substitution.

Q: What does the Moisture Sensitivity Level (MSL) difference mean for handling?

A: The MHT1003NR3 has MSL 3 (168 Hours), requiring storage in controlled humidity environments and limiting shelf life. The MRF24G300HSR5 has MSL 1 (Unlimited), eliminating moisture sensitivity constraints and simplifying inventory management.

Q: Is the 0.6dB gain reduction from 15.9dB to 15.3dB significant?

A: In RF amplifier applications, a 0.6dB gain differential is typically within acceptable system tolerance. System-level gain compensation through bias adjustment or external matching networks can address this minor difference if required by application specifications.

Q: Are both parts currently available for procurement?

A: Both the MHT1003NR3 and MRF24G300HSR5 are classified as obsolete products. Current inventory is available (925 and 922 units respectively), but future availability is not guaranteed. Long-term design strategies should consider alternative active RF components from current product lines.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and use in the European Union and equivalent markets.