EM342-RTR Equivalent & Substitute Parts Reference

Part Overview

The EM342-RTR is a Silicon Labs RF transceiver with integrated microcontroller designed for 802.15.4 Zigbee applications operating at 2.4GHz. This device combines a wireless transceiver and MCU in a 48-VFQFN package with exposed pad. The EM342-RTR is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity.

Substiute Parts

EM342-RTR

Silicon LabsIn Stock: 1052EM342-RTR Datasheet

Current PartRFQ

EFR32MG24A010F1024IM48-BR

Silicon LabsIn Stock: 929EFR32MG24A010F1024IM48-BR Datasheet

MFR RecommendedRFQ

EFR32MG13P732F512GM48-DR

Silicon LabsIn Stock: 202659EFR32MG13P732F512GM48-DR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the EM342-RTR are identified based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

• Package compatibility: 48-VFQFN Exposed Pad form factor
• Frequency band: 2.4GHz operation
• Device type: Integrated RF TxRx + MCU architecture
• Supply voltage range overlap with original specification
• Operating temperature range compatibility
• RoHS3 compliance and MSL rating consistency

Substitution Categories:

MFR Recommended Substitute: EFR32MG24A010F1024IM48-BR represents the manufacturer-recommended upgrade path. This device maintains the 48-VFQFN package and 2.4GHz frequency band while transitioning to Bluetooth v5.3 protocol support. The EFR32MG24A010F1024IM48-BR is an active product with enhanced memory capacity and improved power efficiency characteristics.

Similar Substitute: EFR32MG13P732F512GM48-DR provides multi-protocol support including 802.15.4, Bluetooth v5.0, Thread, and Zigbee®. This device maintains direct protocol compatibility with the EM342-RTR while offering expanded functionality. The EFR32MG13P732F512GM48-DR is an active product with significantly higher inventory availability.

Parameter Comparison

Engineering Selection Recommendations

For Direct Protocol Replacement: The EFR32MG13P732F512GM48-DR is the appropriate selection when maintaining 802.15.4 and Zigbee® protocol support is required. This device provides multi-protocol capability including the original 802.15.4 standard while offering expanded memory resources and active product status. The EFR32MG13P732F512GM48-DR maintains identical package form factor and MSL rating as the EM342-RTR.

For Next-Generation Design: The EFR32MG24A010F1024IM48-BR represents the manufacturer-recommended upgrade path for new designs. This device offers significantly improved power efficiency with reduced receive and transmit current consumption, expanded memory capacity, and extended operating temperature range to 125°C. The EFR32MG24A010F1024IM48-BR transitions protocol support to Bluetooth v5.3 while maintaining the 48-VFQFN package specification.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and MSL Level 2 (1 Year) rating consistent with the EM342-RTR. All devices are manufactured by Silicon Labs and share identical ECCN and HTSUS classifications.

Frequently Asked Questions (FAQ)

Q: Can the EFR32MG24A010F1024IM48-BR directly replace the EM342-RTR in existing Zigbee applications?

A: The EFR32MG24A010F1024IM48-BR supports Bluetooth v5.3 protocol. Direct replacement in 802.15.4 Zigbee applications requires protocol stack verification and firmware adaptation. For applications requiring native 802.15.4 support without modification, the EFR32MG13P732F512GM48-DR is the appropriate selection.

Q: What are the package compatibility considerations?

A: All three devices utilize the 48-VFQFN Exposed Pad package. The EM342-RTR and EFR32MG13P732F512GM48-DR use 7x7mm QFN packages, while the EFR32MG24A010F1024IM48-BR uses a 6x6mm QFN package. PCB layout modifications may be required for the EFR32MG24A010F1024IM48-BR due to the reduced package footprint.

Q: How do power consumption characteristics compare?

A: The EFR32MG24A010F1024IM48-BR demonstrates significantly lower receive current (4.4mA ~ 5.1mA versus 22mA ~ 28.5mA) and transmit current (5mA ~ 19.1mA versus 21.5mA ~ 44.6mA) compared to the EM342-RTR. The EFR32MG13P732F512GM48-DR provides intermediate power consumption levels with receive current of 8.4mA ~ 14mA and transmit current of 8.5mA ~ 134.3mA.

Q: Are memory resources sufficient for migration?

A: The EM342-RTR provides 128kB Flash and 12kB RAM. The EFR32MG13P732F512GM48-DR offers 512kB Flash and 64kB RAM, providing expanded memory headroom. The EFR32MG24A010F1024IM48-BR provides 1024kB Flash and 128kB RAM, supporting more complex application firmware.

Q: What is the supply voltage compatibility?

A: The EM342-RTR operates at 2.1V ~ 3.6V. Both substitute parts support wider voltage ranges: EFR32MG24A010F1024IM48-BR operates at 1.71V ~ 3.8V, and EFR32MG13P732F512GM48-DR operates at 1.8V ~ 3.8V. Both substitutes are compatible with the original supply voltage specification.

Q: Is inventory availability a consideration?

A: The EM342-RTR has 1,038 pieces in stock with obsolete status. The EFR32MG13P732F512GM48-DR has 202,648 pieces available with active product status. The EFR32MG24A010F1024IM48-BR has 882 pieces in stock with active product status. For long-term production continuity, active products are recommended.