MGA-43728-BLKG Equivalent & Substitute Parts

Part Overview

The MGA-43728-BLKG is an RF Amplifier IC manufactured by Broadcom Limited, designed for cellular applications in the 2.62GHz to 2.69GHz frequency band. This component is packaged in a 28-QFN (5x5) surface mount configuration with a P1dB of 36dBm and gain of 38.3dB. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations where this frequency band and performance envelope are required.

Substiute Parts

MGA-43728-BLKG

Broadcom LimitedIn Stock: 1051MGA-43728-BLKG Datasheet

Current PartRFQ

MMZ25333BT1

NXP USA Inc.In Stock: 2159MMZ25333BT1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MGA-43728-BLKG is determined by the following critical parameters:

• Frequency coverage must encompass the 2.62GHz to 2.69GHz operating band
• RF amplifier classification for cellular applications
• Surface mount packaging technology
• Supply voltage compatibility at 5V
• P1dB and gain characteristics suitable for the application
• Active product status and availability

The MMZ25333BT1 manufactured by NXP USA Inc. qualifies as a substitute based on its frequency range of 1.5GHz to 2.7GHz, which fully encompasses the 2.62GHz to 2.69GHz requirement. Both components operate at 5V supply voltage and are classified as cellular RF amplifiers in surface mount packages.

Parameter Comparison

Engineering Selection Recommendations

The MMZ25333BT1 is an active product with current manufacturing support from NXP USA Inc., providing supply chain continuity for applications requiring cellular RF amplification in the 2.62GHz to 2.69GHz band. The substitute part demonstrates superior compliance posture with ROHS3 certification and improved moisture sensitivity rating (MSL 1 versus MSL 3), reducing handling and storage constraints.

The MMZ25333BT1 operates at lower supply current (265mA versus 350mA), offering improved power efficiency. The frequency range of 1.5GHz to 2.7GHz provides broader operational coverage than the original part's 2.62GHz to 2.69GHz specification. Package differences (24-VFQFN versus 28-VFQFN) require PCB layout modification and thermal management reassessment.

Frequently Asked Questions (FAQ)

Q: Can the MMZ25333BT1 directly replace the MGA-43728-BLKG without circuit modifications?

A: The MMZ25333BT1 covers the required 2.62GHz to 2.69GHz frequency band and operates at the same 5V supply voltage. However, the package change from 28-VFQFN to 24-VFQFN requires PCB footprint redesign. Differences in P1dB (32dBm versus 36dBm) and gain (42.7dB versus 38.3dB) may require output matching network adjustment.

Q: What are the key differences in electrical performance?

A: The MMZ25333BT1 provides higher gain (42.7dB versus 38.3dB) but lower P1dB output power (32dBm versus 36dBm). Supply current is reduced from 350mA to 265mA. These differences must be evaluated against specific application requirements for output power and linearity.

Q: How do the package differences affect implementation?

A: The MGA-43728-BLKG uses a 28-pin VFQFN package (5x5mm), while the MMZ25333BT1 uses a 24-pin HVQFN package (4x4mm) with exposed pad. The smaller footprint and reduced pin count require complete PCB redesign and thermal management reassessment.

Q: What compliance advantages does the substitute part offer?

A: The MMZ25333BT1 is ROHS3 compliant and carries an MSL rating of 1 (unlimited moisture exposure), compared to the original part's MSL 3 (168 hours). This reduces storage and handling constraints and aligns with current environmental compliance requirements.

Q: Is the MMZ25333BT1 readily available?

A: The MMZ25333BT1 is classified as active product status with 2100 pieces in current inventory, ensuring supply chain availability. The MGA-43728-BLKG is obsolete with no ongoing manufacturing support.