SE2425U-R Equivalent & Substitute Parts

Part Overview

The SE2425U-R is an RF Amplifier IC manufactured by Skyworks Solutions Inc., designed for Bluetooth 2.4GHz ~ 2.5GHz applications in a 16-QFN (3x3) surface mount package. This part is classified as obsolete, making identification of functionally compatible alternatives essential for ongoing design support and production continuity. The SE2425U-R delivers 29.5dB gain at 2.45GHz test frequency with supply voltage range of 2.7V ~ 3.6V and 123mA supply current, optimized for Bluetooth RF amplification in the SiGe series.

Substiute Parts

SE2425U-R

Skyworks Solutions Inc.In Stock: 6006SE2425U-R Datasheet

Current PartRFQ

SE2433T-R

Skyworks Solutions Inc.In Stock: 18979SE2433T-R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The SE2433T-R is identified as a substitute for the SE2425U-R based on the following substitution criteria:

Common Electrical Parameters:

• Manufacturer: Skyworks Solutions Inc. (same source)
• Frequency Band: 2.4GHz ISM band overlap with Bluetooth 2.4GHz ~ 2.5GHz range
• Supply Voltage Compatibility: SE2433T-R range (2V ~ 3.6V) encompasses SE2425U-R requirement (2.7V ~ 3.6V)
• Surface Mount Technology: Both use surface mount configuration
• RoHS3 Compliance: Both meet ROHS3 Compliant standard
• MSL Rating: Both rated MSL 1 (Unlimited)

Substitution Limitations:

• Package difference: SE2425U-R uses 16-QFN (3x3); SE2433T-R uses 12-QFN (2.5x2)
• Gain difference: SE2425U-R provides 29.5dB; SE2433T-R provides 22dB
• Current consumption: SE2425U-R draws 123mA; SE2433T-R draws 50mA ~ 100mA
• RF Type: SE2425U-R is Bluetooth-specific; SE2433T-R is ISM band general-purpose
• Product Status: SE2433T-R is Active (ongoing availability)

Parameter Comparison

Engineering Selection Recommendations

SE2433T-R Substitution Applicability:

The SE2433T-R is suitable as a substitute for the SE2425U-R in applications where the following conditions are met:

1. Gain Tolerance: Circuit design must accommodate 22dB gain instead of 29.5dB. A 7.5dB reduction requires corresponding adjustments to downstream amplification stages or input signal levels.

2. Package Redesign: PCB layout modification is mandatory. The transition from 16-QFN (3x3) to 12-QFN (2.5x2) requires new footprint design, trace routing, and thermal management evaluation.

3. Current Budget: Power supply design may be optimized. SE2433T-R operates at 50mA ~ 100mA versus SE2425U-R at 123mA, potentially reducing thermal load.

4. Supply Voltage: SE2433T-R supports 2V minimum supply voltage, providing additional design flexibility below the SE2425U-R 2.7V minimum.

5. Compliance Status: Both parts maintain ROHS3 compliance and MSL 1 rating, ensuring regulatory and moisture handling requirements are preserved.

6. Active Production: SE2433T-R is actively manufactured, ensuring long-term availability and supply chain stability compared to the obsolete SE2425U-R.

Frequently Asked Questions (FAQ)

Q: Can SE2433T-R be used as a direct pin-for-pin replacement?

A: No. SE2425U-R uses 16-QFN (3x3) packaging while SE2433T-R uses 12-QFN (2.5x2) packaging. Pin count and physical footprint differ, requiring PCB redesign and schematic modifications.

Q: What is the impact of the 7.5dB gain difference?

A: The lower gain of SE2433T-R (22dB vs. 29.5dB) requires circuit compensation through additional amplification stages, input signal adjustment, or impedance matching optimization to maintain system performance specifications.

Q: Are both parts RoHS compliant?

A: Yes. Both SE2425U-R and SE2433T-R are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, meeting equivalent environmental and regulatory standards.

Q: What is the frequency band difference?

A: SE2425U-R covers 2.4GHz ~ 2.5GHz (Bluetooth-specific). SE2433T-R covers 2.4GHz ~ 2.48GHz (ISM band general-purpose). The overlap is 2.4GHz ~ 2.48GHz, suitable for standard Bluetooth 2.4GHz operation.

Q: Why is SE2433T-R recommended despite being a different RF type?

A: SE2433T-R is ISM band rated rather than Bluetooth-specific, but operates within the Bluetooth frequency range. It is actively manufactured by the same supplier, providing production continuity for the obsolete SE2425U-R.

Q: What supply voltage range should be used?

A: SE2433T-R supports 2V ~ 3.6V. For designs originally using SE2425U-R (2.7V ~ 3.6V), operation within 2.7V ~ 3.6V ensures compatibility with existing power supply designs.

Q: Is thermal management different between the two parts?

A: SE2433T-R draws 50mA ~ 100mA compared to SE2425U-R at 123mA. Lower current consumption may reduce thermal dissipation requirements, but package size reduction (3x3 to 2.5x2) may affect thermal spreading characteristics. Thermal analysis is required for specific applications.