EM357-IRTR Equivalent & Substitute Parts

Part Overview

The EM357-IRTR is an IEEE 802.15.4 2.4GHz System-on-Chip (SoC) manufactured by Silicon Labs, classified as an RF integrated circuit. This component is currently in obsolete product status, which necessitates identification of functionally equivalent alternatives for ongoing design requirements and component sourcing. The EM357 series represents legacy wireless connectivity solutions that require modern substitutes to maintain system compatibility and ensure long-term supply chain viability.

Substiute Parts

EM357-IRTR

Silicon LabsIn Stock: 1935EM357-IRTR Datasheet

Current PartRFQ

EFR32MG24A010F1024IM48-BR

Silicon LabsIn Stock: 929EFR32MG24A010F1024IM48-BR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The EFR32MG24A010F1024IM48-BR qualifies as a manufacturer-recommended substitute based on the following substitution criteria:

Manufacturer Continuity: Both components are manufactured by Silicon Labs, ensuring design support consistency and supply chain alignment with the original equipment manufacturer.

Wireless Protocol Compatibility: The EM357-IRTR operates on IEEE 802.15.4 2.4GHz standards. The EFR32MG24A010F1024IM48-BR provides 2.4GHz wireless capability with Bluetooth v5.3 support, extending protocol compatibility beyond the original specification while maintaining the core 2.4GHz frequency band.

Regulatory and Compliance Alignment: Both components share identical ECCN (5A992C) classification and maintain RoHS compliance status (EM357-IRTR: RoHS Compliant; EFR32MG24A010F1024IM48-BR: ROHS3 Compliant), ensuring regulatory requirements are preserved across substitution.

Moisture Sensitivity Equivalence: Both components maintain MSL 2 (1 Year) ratings, allowing identical handling and storage protocols.

Product Status Transition: The EM357-IRTR (Obsolete) is replaced by the EFR32MG24A010F1024IM48-BR (Active), representing the current-generation equivalent from Silicon Labs' wireless SoC portfolio.

Parameter Comparison

Engineering Selection Recommendations

Obsolescence Management: The EM357-IRTR is classified as obsolete. The EFR32MG24A010F1024IM48-BR represents the active-status equivalent from Silicon Labs and is the manufacturer-recommended substitute for new designs and component replenishment.

Regulatory Compliance: Both components maintain equivalent export control classifications (ECCN 5A992C) and RoHS compliance certifications. The substitute meets or exceeds the regulatory requirements of the original component.

Supply Chain Continuity: Current inventory availability shows 882 units of the EFR32MG24A010F1024IM48-BR in stock, compared to 1836 units of the obsolete EM357-IRTR. Selection of the active substitute ensures long-term component availability and manufacturing support.

Manufacturer Support: Silicon Labs continues active development and support for the Mighty Gecko series (EFR32MG24A010F1024IM48-BR), whereas the EM357 series has reached end-of-life status.

Frequently Asked Questions (FAQ)

Q: Can the EFR32MG24A010F1024IM48-BR directly replace the EM357-IRTR in existing designs?

A: The EFR32MG24A010F1024IM48-BR is the manufacturer-recommended substitute and shares the same 2.4GHz frequency band, ECCN classification, and RoHS compliance status. However, design integration requires evaluation of specific protocol requirements, pin compatibility, and firmware adaptation, as the substitute represents a different product family within Silicon Labs' wireless SoC portfolio.

Q: What are the key differences in wireless protocol support?

A: The EM357-IRTR is specified for IEEE 802.15.4 2.4GHz operation. The EFR32MG24A010F1024IM48-BR provides Bluetooth v5.3 support at 2.4GHz with multiple modulation schemes (2FSK, 2GFSK, DSSS, GMSK, MSK, O-QPSK), offering extended protocol flexibility while maintaining the core 2.4GHz frequency band.

Q: Are the packaging and pin configurations compatible?

A: The EM357-IRTR packaging information is not fully specified in the available data. The EFR32MG24A010F1024IM48-BR uses a 48-VFQFN Exposed Pad package (6x6mm). Pin-level compatibility must be verified against the original component's package specification before design integration.

Q: What is the moisture sensitivity requirement for both components?

A: Both the EM357-IRTR and EFR32MG24A010F1024IM48-BR maintain MSL 2 (1 Year) ratings, indicating identical moisture sensitivity classifications and allowing the use of equivalent handling, storage, and reflow protocols.

Q: Are there supply chain advantages to selecting the substitute?

A: Yes. The EFR32MG24A010F1024IM48-BR is classified as active product status with current manufacturing support from Silicon Labs, whereas the EM357-IRTR is obsolete. The substitute ensures access to ongoing component availability, technical documentation, and manufacturer support for new production runs and long-term system maintenance.