SE2621L-R Equivalent & Substitute Parts

Part Overview

The SE2621L-R is an RF IC Front End module manufactured by Skyworks Solutions Inc., designed for 802.11b/g/n wireless applications operating in the 2.4GHz to 2.5GHz frequency band. This component integrates diversity functionality in a compact 24-QFN (3x4) surface mount package. The product is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, legacy design maintenance, and component procurement planning.

Substiute Parts

SE2621L-R

Skyworks Solutions Inc.In Stock: 5377SE2621L-R Datasheet

Current PartRFQ

LX5537LQ

Microchip TechnologyIn Stock: 1149LX5537LQ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SE2621L-R is determined by the following critical parameters:

• RF Standard Compatibility: The substitute must support 802.11b/g/n wireless protocols
• Frequency Band Alignment: Operating frequency must encompass or overlap the 2.4GHz to 2.5GHz range
• Package Compatibility: Surface mount QFN packaging with compatible pin count and footprint
• Compliance Requirements: RoHS3 compliance and MSL rating suitable for manufacturing processes
• Product Status: Active or current production status to ensure ongoing availability

The LX5537LQ from Microchip Technology meets these substitution criteria through overlapping RF standard support (802.11b/g/n included within its broader 2.3GHz ~ 2.7GHz range), active product status, and equivalent RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

The LX5537LQ serves as a functional substitute for the obsolete SE2621L-R based on the following engineering criteria:

• RF Standard Coverage: Both components support 802.11b/g/n protocols; the LX5537LQ extends coverage to additional standards (WiBro, WiMAX) within an expanded frequency range that fully encompasses the SE2621L-R operating band
• Compliance Alignment: Both components maintain ROHS3 compliance, meeting current regulatory requirements for electronic component manufacturing and deployment
• Product Availability: The LX5537LQ maintains active production status, ensuring reliable component procurement and supply chain continuity for legacy system support
• MSL Consideration: The LX5537LQ carries MSL 3 (168 Hours) versus MSL 1 for the original part; this requires verification of manufacturing process compatibility and storage conditions during assembly operations

Frequently Asked Questions (FAQ)

Q: Can the LX5537LQ directly replace the SE2621L-R in existing designs?

A: The LX5537LQ provides functional equivalence for 802.11b/g/n RF front-end applications within the 2.4GHz to 2.5GHz band. However, physical package compatibility, pin configuration, and electrical interface characteristics must be verified against the original design schematic and PCB layout before implementation.

Q: What is the significance of the frequency range difference (2.4-2.5GHz vs. 2.3-2.7GHz)?

A: The LX5537LQ operates across a broader frequency spectrum that fully contains the SE2621L-R operating range. This extended bandwidth supports additional wireless standards (WiBro, WiMAX) while maintaining full compatibility with the original 802.11b/g/n 2.4GHz to 2.5GHz specification.

Q: How does the MSL rating difference affect component selection?

A: The SE2621L-R carries MSL 1 (unlimited moisture exposure tolerance), while the LX5537LQ carries MSL 3 (168-hour limit). MSL 3 components require controlled storage conditions and have a defined floor life after moisture exposure. Manufacturing processes must accommodate the more stringent handling requirements of MSL 3 components.

Q: Are both components RoHS compliant?

A: Yes, both the SE2621L-R and LX5537LQ maintain ROHS3 compliance, meeting current environmental and regulatory standards for electronic component manufacturing and end-of-life management.

Q: Why is the SE2621L-R classified as obsolete?

A: Obsolete status indicates the component is no longer in active production by the manufacturer. The LX5537LQ, with active product status, provides continued access to equivalent RF front-end functionality for 802.11b/g/n applications.