EM3555-RTR Equivalent & Substitute Parts Reference

Part Overview

The EM3555-RTR is an RF integrated circuit manufactured by Silicon Labs, classified as an IC RF component. This part is currently marked as Obsolete, with 1,087 units available in new original stock. Due to its obsolete status, component sourcing for new designs or production runs requires identification of active equivalent alternatives that maintain functional compatibility with existing applications.

The EM3555-RTR serves RF applications requiring integrated circuit solutions. Substitution is necessary to ensure long-term supply chain continuity and access to parts with active manufacturer support and ongoing availability.

Substiute Parts

EM3555-RTR

Silicon LabsIn Stock: 1127EM3555-RTR Datasheet

Current PartRFQ

EFR32MG24A010F1024IM48-BR

Silicon LabsIn Stock: 929EFR32MG24A010F1024IM48-BR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete EM3555-RTR is based on the following criteria derived from provided parameters:

Primary Substitution Criteria:

• Manufacturer alignment: Silicon Labs (same manufacturer ensures design continuity and support)
• Component category: RF integrated circuit with transceiver and microcontroller functionality
• Product status: Active manufacturing status required for long-term availability
• Functional classification: RF TxRx + MCU capability

Manufacturer-Recommended Substitute: The EFR32MG24A010F1024IM48-BR is designated as the MFR (Manufacturer) Recommended substitute. This part is manufactured by Silicon Labs and maintains active product status, ensuring ongoing availability and manufacturer support.

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Production: The EFR32MG24A010F1024IM48-BR is the manufacturer-recommended substitute for the obsolete EM3555-RTR. This part carries Active product status, ensuring manufacturer support, ongoing availability, and compliance with current industry standards including ROHS3.

For Existing Inventory Management: Remaining stock of the EM3555-RTR (1,087 units) may be retained for legacy system maintenance or repair applications where direct compatibility is required. However, new component procurement should transition to the EFR32MG24A010F1024IM48-BR to ensure supply chain continuity.

Compliance Considerations: The substitute part is ROHS3 Compliant with Moisture Sensitivity Level (MSL) 2 (1 Year), meeting current environmental and handling requirements for industrial applications.

Frequently Asked Questions (FAQ)

Q: Why is the EM3555-RTR marked as obsolete? A: The EM3555-RTR has reached end-of-life status with Silicon Labs. Obsolete designation indicates the manufacturer no longer actively produces this component. Substitute parts ensure access to supported, actively manufactured alternatives.

Q: Is the EFR32MG24A010F1024IM48-BR a direct pin-for-pin replacement? A: Substitution is based on functional RF IC classification and manufacturer recommendation. The EFR32MG24A010F1024IM48-BR uses a 48-VFQFN Exposed Pad package. Pin compatibility must be verified against specific application schematics and PCB layouts.

Q: What are the key differences between these parts? A: The substitute part is a more advanced RF TxRx + MCU device with integrated Bluetooth v5.3 capability, 2.4GHz frequency operation, and enhanced memory (1024kB Flash, 128kB RAM). The EM3555-RTR specifications are not fully detailed in available documentation.

Q: Can I use remaining EM3555-RTR inventory in new production? A: Existing inventory may be used for legacy system support or repair applications. For new production designs, transition to the active substitute part is recommended to ensure long-term supply chain stability and manufacturer support.

Q: What is the package difference? A: The substitute part uses 48-VFQFN Exposed Pad packaging (6x6 QFN). Original EM3555-RTR packaging specifications are not provided. Package compatibility must be confirmed for PCB redesign requirements.

Q: Are there compliance differences? A: The EFR32MG24A010F1024IM48-BR is ROHS3 Compliant with MSL 2 (1 Year) moisture sensitivity rating. Compliance status of the obsolete EM3555-RTR is not specified in available documentation.