Equivalent & Substitute Parts Reference: Silicon Labs EM3581-IRTR

Part Overview

The Silicon Labs EM3581-IRTR is an IC RF transceiver designed for wireless communication protocols such as 802.15.4, Bluetooth, WiFi (802.11g), and Zigbee® within the 2.4GHz to 2.5GHz frequency range. The device features 256kB Flash and 32kB RAM, supports various serial interfaces (I2C, SPI, UART, USB), and is available in a 48-VFQFN exposed pad package. With a product status listed as Obsolete, sourcing direct replacements is increasingly difficult, making it necessary to identify alternative and substitute models that match key electrical, mechanical, and protocol-related parameters.

Substiute Parts

EM3581-IRTR

Silicon LabsIn Stock: 991EM3581-IRTR Datasheet

Current PartRFQ

EFR32MG24A010F1024IM48-BR

Silicon LabsIn Stock: 929EFR32MG24A010F1024IM48-BR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic is based strictly on alignment with key electrical, protocol, and mechanical parameters. Candidate substitutes must support the appropriate RF family or standards, protocol features, frequency range, data rate, modulation types, memory size, serial interfaces, GPIO count, supply voltage range, current consumption, operating temperature range, mounting type, and package format.

Parameter Comparison

Engineering Selection Recommendations

The EM3581-IRTR is listed as Obsolete, which directly affects design sustainability and future procurement. The EFR32MG24A010F1024IM48-BR is identified as Active and ROHS3 Compliant with MSL 2 (1 Year), suitable for new designs requiring sustained availability and compliance with hazardous materials regulations. Both parts meet surface mount and 48-VFQFN mechanical requirements.

Frequently Asked Questions (FAQ)

Q1: What are the main electrical criteria when substituting EM3581-IRTR?
A1: Key criteria are RF family/standard support, operating frequency range, protocol, modulation, data rate, supply voltage, current consumption, memory size, serial interfaces, and GPIO count.

Q2: Do substitute parts maintain the same mechanical mounting and package format?
A2: The EM3581-IRTR and EFR32MG24A010F1024IM48-BR both utilize a 48-VFQFN exposed pad package, supporting surface-mount processes.

Q3: How does product status affect substitution?
A3: The obsolete status of EM3581-IRTR requires evaluation of active substitutes to ensure supply continuity, while substitutes like EFR32MG24A010F1024IM48-BR maintain active production status.

Q4: Is RoHS compliance addressed in the substitutes?
A4: The EFR32MG24A010F1024IM48-BR is ROHS3 Compliant, meeting contemporary environmental and hazardous materials requirements.

Q5: Are there differences in voltage supply or current specs between the parts?
A5: Supply voltage and current values differ between the two models. It is necessary to check compatibility with system power rails and overall power management requirements strictly per the supplied parameters.