EM3588-IRT Equivalent & Substitute Parts Reference

Part Overview

The EM3588-IRT is a Silicon Labs RF transceiver IC designed for 2.4GHz wireless applications including 802.15.4, Bluetooth, WiFi 802.11g, and Zigbee® protocols. This device operates as a TxRx Only module without integrated MCU functionality. The EM3588-IRT is classified as Obsolete product status, making identification of functionally equivalent alternatives necessary for ongoing design support, production continuity, and new project implementations.

The primary driver for substitution is the discontinuation of the EM358x series, requiring engineers to evaluate compatible alternatives that maintain RF performance characteristics and package compatibility while potentially offering enhanced capabilities or extended lifecycle support.

Substiute Parts

EM3588-IRT

Silicon LabsIn Stock: 727EM3588-IRT Datasheet

Current PartRFQ

EFR32MG24A010F1024IM48-B

Silicon LabsIn Stock: 685EFR32MG24A010F1024IM48-B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EM3588-IRT is evaluated based on the following critical parameters that define functional equivalence:

RF Performance Alignment:

• Frequency band coverage (2.4GHz operation required)
• Modulation support (O-QPSK capability)
• Power output and sensitivity specifications
• Data rate capacity

Physical Compatibility:

• Package type: 48-VFQFN Exposed Pad form factor
• Mounting type: Surface Mount
• Pin count and footprint compatibility

Electrical Characteristics:

• Supply voltage ranges
• Current consumption profiles (RX/TX modes)
• Operating temperature range

Interface Capability:

• Serial communication protocols (I2C, SPI, UART minimum)
• GPIO availability for system integration

The EFR32MG24A010F1024IM48-B qualifies as a manufacturer-recommended substitute based on shared package format (48-VFQFN), 2.4GHz frequency operation, compatible serial interfaces, and active product status with extended lifecycle support. However, this substitute introduces architectural differences (TxRx + MCU integration versus TxRx Only) that require design evaluation.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The EM3588-IRT is classified as Obsolete, indicating end-of-life status with no ongoing manufacturing or support. The EFR32MG24A010F1024IM48-B maintains Active product status with full lifecycle support from Silicon Labs, ensuring availability of technical documentation, design resources, and production continuity.

Compliance and Certification: The EFR32MG24A010F1024IM48-B provides ROHS3 compliance certification and defined Moisture Sensitivity Level (MSL) rating of 2 (1 Year), supporting manufacturing and supply chain requirements. ECCN and HTSUS classifications are documented for export and tariff purposes.

Package Compatibility: Both devices utilize 48-VFQFN Exposed Pad Surface Mount packages. The substitute features a 6x6mm footprint compared to the original 7x7mm footprint. PCB layout modifications are required to accommodate the different package dimensions. Pin-to-pin compatibility must be verified against specific application schematics.

Architectural Differences: The substitute integrates MCU functionality (TxRx + MCU) versus the original TxRx Only architecture. Applications requiring external MCU control may require firmware adaptation to leverage or bypass integrated processing capabilities. The expanded memory (1024kB Flash, 128kB RAM versus 512kB/64kB) and additional GPIO (32 versus 24) provide enhanced system integration potential.

Power Consumption Profile: The EFR32MG24A010F1024IM48-B demonstrates significantly lower current consumption in receive mode (4.4mA ~ 5.1mA versus 28mA) and transmit mode (5mA ~ 19.1mA versus 33.5mA), offering substantial power efficiency improvements for battery-powered applications.

RF Performance Trade-offs: The substitute supports extended modulation options (2FSK, 2GFSK, DSSS, GMSK, MSK, O-QPSK) while maintaining O-QPSK compatibility. Maximum data rate is reduced to 2Mbps from 5Mbps. Sensitivity specification (-94.8dBm versus -100dBm) represents a 5.2dB reduction. These RF characteristics require evaluation against specific application link budget requirements.

Frequently Asked Questions (FAQ)

Q: Can the EFR32MG24A010F1024IM48-B directly replace the EM3588-IRT in existing PCB designs?

A: Direct PCB replacement is not possible due to package footprint differences (6x6mm versus 7x7mm). PCB layout modifications are required. Pin mapping must be verified against application-specific schematics to confirm signal routing compatibility.

Q: What are the primary differences between TxRx Only and TxRx + MCU architectures?

A: The EM3588-IRT operates as a dedicated RF transceiver requiring external MCU control via serial interfaces (SPI, UART, I2C). The EFR32MG24A010F1024IM48-B integrates RF transceiver and MCU functions on a single die, reducing component count and potentially simplifying system design. Applications must evaluate whether integrated MCU functionality aligns with existing firmware architecture.

Q: How do the RF performance specifications compare?

A: The EM3588-IRT provides 5Mbps maximum data rate and -100dBm sensitivity. The EFR32MG24A010F1024IM48-B operates at 2Mbps maximum data rate with -94.8dBm sensitivity. Applications requiring maximum data throughput or extended range performance must evaluate whether these differences impact system requirements.

Q: What is the impact of different supply voltage ranges?

A: The EM3588-IRT operates at 1.18V ~ 1.32V and 1.7V ~ 1.9V. The EFR32MG24A010F1024IM48-B operates at 1.71V ~ 3.8V. The substitute supports broader voltage range, enabling single-supply operation from 1.71V upward. Power supply design modifications may be required to accommodate the different voltage specifications.

Q: Are there protocol or standard compatibility concerns?

A: The EM3588-IRT supports 802.15.4, Bluetooth, WiFi 802.11g, and Zigbee® protocols. The EFR32MG24A010F1024IM48-B is specified for Bluetooth v5.3 with extended modulation support. Applications requiring 802.15.4, WiFi 802.11g, or Zigbee® protocol support must verify that the substitute's Bluetooth v5.3 specification meets protocol requirements.

Q: What are the power consumption implications for battery-powered applications?

A: The EFR32MG24A010F1024IM48-B demonstrates 85% reduction in receive current (4.4mA ~ 5.1mA versus 28mA) and 40% ~ 43% reduction in transmit current (5mA ~ 19.1mA versus 33.5mA). Battery life extension is significant for low-power wireless applications. System power budget analysis is required to quantify battery runtime improvements.

Q: Is the substitute suitable for industrial temperature range applications?

A: The EM3588-IRT operates at -40°C ~ 85°C. The EFR32MG24A010F1024IM48-B extends operating temperature to -40°C ~ 125°C, supporting extended industrial temperature requirements. Applications requiring operation above 85°C benefit from the substitute's expanded temperature specification.

Q: What compliance certifications are relevant for supply chain and manufacturing?

A: The EFR32MG24A010F1024IM48-B provides ROHS3 compliance, MSL rating of 2 (1 Year), ECCN classification (5A992C), and HTSUS code (8542.39.0001). These certifications support regulatory compliance, moisture control during storage and assembly, and export/tariff documentation requirements.