SST12LF02-QXCE Equivalent & Substitute Parts

Part Overview

The SST12LF02-QXCE is an RF front-end IC designed for 2.4GHz 802.11b/g/n wireless applications, manufactured by Microchip Technology in a 16-XQFN (3x3) package with exposed pad. This component integrates analog front-end functionality for WLAN connectivity in compact form factor.

The SST12LF02-QXCE has reached obsolete product status. Identifying qualified substitute components is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this RF front-end architecture.

Substiute Parts

SST12LF02-QXCE

Microchip TechnologyIn Stock: 768SST12LF02-QXCE Datasheet

Current PartRFQ

SE2611T-R

Skyworks Solutions Inc.In Stock: 17437SE2611T-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SST12LF02-QXCE is determined by the following critical parameters:

• RF Standard Compatibility: Substitute parts must support 802.11b/g/n wireless protocols
• Frequency Band: Operation within or overlapping the 2.4GHz band
• Package Type: Physical form factor and pin configuration must accommodate board-level integration
• Regulatory Compliance: RoHS3 compliance and REACH status alignment
• Moisture Sensitivity: MSL rating appropriate for manufacturing and storage conditions

The SE2611T-R qualifies as a substitute based on matching RF type (802.11b/g/n), overlapping frequency range (2.4GHz ~ 2.5GHz), and equivalent regulatory compliance (ROHS3 Compliant). Package differences (20-QFN vs. 16-XQFN) require PCB layout evaluation but do not preclude functional substitution.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The SST12LF02-QXCE is obsolete, while SE2611T-R maintains active product status with current manufacturing support and availability (17,363 pcs in stock vs. 722 pcs for the original part).

Compliance Alignment: Both components meet ROHS3 compliance requirements. The SE2611T-R offers improved moisture sensitivity (MSL 1 vs. MSL 3), reducing handling and storage constraints during manufacturing.

Frequency Coverage: The SE2611T-R extends frequency range to 2.5GHz, providing broader operational bandwidth while maintaining full 802.11b/g/n protocol support at 2.4GHz.

Package Transition: The shift from 16-XQFN to 20-QFN requires PCB layout modification. Both packages maintain 3x3mm footprint dimensions and exposed pad configuration, but pin count and routing differ. Design validation is necessary prior to production implementation.

Frequently Asked Questions (FAQ)

Q: Can SE2611T-R directly replace SST12LF02-QXCE without PCB modification?

A: No. The pin count difference (20 vs. 16) and package designation change (UFQFN vs. XQFN) require PCB layout redesign. Pinout verification against both datasheets is mandatory before substitution.

Q: What is the significance of MSL rating difference between these parts?

A: MSL 3 (SST12LF02-QXCE) allows 168 hours of floor life before reflow, while MSL 1 (SE2611T-R) permits unlimited floor life. The SE2611T-R reduces moisture-related handling constraints and risk of solder joint degradation during manufacturing.

Q: Are both parts suitable for 2.4GHz 802.11b/g/n applications?

A: Yes. Both components support 802.11b/g/n protocols at 2.4GHz. The SE2611T-R additionally covers 2.5GHz operation, providing extended frequency capability.

Q: What regulatory compliance should be verified before substitution?

A: Both parts are ROHS3 compliant. Verify REACH compliance status for SE2611T-R against your supply chain requirements. Confirm ECCN classification (EAR99 for original, 5A991G for substitute) aligns with export control requirements.

Q: Is the 3x3mm package dimension identical between both parts?

A: Yes, both maintain 3x3mm physical dimensions with exposed pad configuration. However, the internal pin layout and total pin count differ, requiring complete PCB footprint redesign.