EM355-IRTR Equivalent & Substitute Parts Reference

Part Overview

The EM355-IRTR is an RF integrated circuit manufactured by Silicon Labs, classified as an IC RF component. This part is currently in Obsolete product status, indicating it is no longer in active production or supported by the manufacturer. Due to its obsolescence, sourcing replacement units becomes increasingly difficult, making identification of functionally equivalent substitute parts essential for ongoing system support, redesigns, and new production runs.

Substiute Parts

EM355-IRTR

Silicon LabsIn Stock: 2624EM355-IRTR Datasheet

Current PartRFQ

EFR32MG24A010F1024IM48-BR

Silicon LabsIn Stock: 929EFR32MG24A010F1024IM48-BR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete EM355-IRTR is based on the following criteria derived from the provided parameters:

Primary Substitution Basis:

• Manufacturer alignment: Silicon Labs (same manufacturer ensures design continuity and support ecosystem)
• Product category: RF integrated circuits with transceiver and microcontroller integration
• Functional classification: RF TxRx + MCU devices capable of wireless communication

Substitute Part Identified: The EFR32MG24A010F1024IM48-BR from Silicon Labs represents the manufacturer-recommended substitute. This part is designated as an active, production-grade component within the Mighty Gecko series, providing a direct upgrade path from the obsolete EM355-IRTR.

Parameter Comparison

Engineering Selection Recommendations

Substitute Part Selection Rationale:

The EFR32MG24A010F1024IM48-BR is the manufacturer-recommended substitute for the obsolete EM355-IRTR based on the following engineering factors:

1. Manufacturer Continuity: Both parts are manufactured by Silicon Labs, ensuring design philosophy alignment and technical support consistency.

2. Product Status: The substitute part holds Active product status, guaranteeing ongoing availability, manufacturing support, and technical documentation from the manufacturer.

3. Compliance Certifications: The EFR32MG24A010F1024IM48-BR is ROHS3 compliant and carries MSL 2 moisture sensitivity rating, meeting modern regulatory and reliability requirements.

4. Functional Integration: The substitute provides integrated RF transceiver and microcontroller functionality, representing an evolution of the RF IC category.

5. Production Viability: With 882 units currently in stock, the substitute part is available for immediate procurement and integration into production schedules.

Frequently Asked Questions (FAQ)

Q: Why is the EM355-IRTR classified as obsolete?

A: The EM355-IRTR has reached end-of-life status within Silicon Labs' product portfolio. Obsolete classification indicates the manufacturer no longer produces this part, and existing inventory will eventually deplete. Transition to active alternatives is necessary for long-term system support.

Q: Is the EFR32MG24A010F1024IM48-BR a direct pin-for-pin replacement?

A: The substitute part is a manufacturer-recommended equivalent based on functional RF IC classification. Pin compatibility must be verified through detailed schematic and PCB layout review against the respective datasheets. Package differences (48-VFQFN Exposed Pad) require PCB redesign consideration.

Q: What are the key differences in package configuration?

A: The EFR32MG24A010F1024IM48-BR uses a 48-VFQFN (Very Fine Pitch Quad Flat No-lead) package with exposed pad in 6x6mm form factor. PCB layout, via placement, and thermal management design must be adapted accordingly.

Q: Are there compliance or certification differences between the parts?

A: The substitute part is ROHS3 compliant with MSL 2 moisture sensitivity rating. These certifications ensure compatibility with modern manufacturing processes and regulatory requirements. Verify compliance requirements for your specific application.

Q: What is the inventory status for long-term production planning?

A: The EM355-IRTR has 2546 units available; however, as an obsolete part, this inventory is finite and non-replenishable. The EFR32MG24A010F1024IM48-BR (882 units in stock) is actively manufactured and represents the sustainable long-term solution.