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Silicon Labs SLWRB4183A

Name: SLWRB4183A
Brand: Silicon Labs
SKU: SLWRB4183A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SLWRB4183A

Manufacturer:: Silicon Labs

Category:: RF, RFID, Wireless Evaluation Boards

Package:

Datasheet:: SLWRB4183A.pdf

Description:: EFR32XG22 WIRELESS GECKO 2.4 GHZ

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:508

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Product details

Overview

SLWRB4183A from Silicon Labs is a 2.4 GHz Bluetooth Low Energy reference radio board built around the EFR32MG22C224F512IM32 Wireless SoC, delivering 6 dBm output power with integrated inverted-F PCB antenna and UFL connector for conducted RF testing. It serves as an RF reference design for BLE applications requiring FCC/ETSI-compliant 2.4 GHz operation at 6 dBm.

For engineers reviewing the SLWRB4183A datasheet, SLWRB4183A pinout, SLWRB4183A application, or SLWRB4183A equivalent, this board enables rapid evaluation of EFR32MG22 RF performance, antenna matching, conducted/radiated power validation, and Simplicity Studio–based wireless application development with energy profiling.

Technical Context

The SLWRB4183A implements a complete 2.4 GHz RF front-end using a three-element impedance matching network optimized for 6 dBm output and low current consumption. It integrates a 32.768 kHz LFXO and 38.4 MHz HFXO, supports both radiated (on-board inverted-F antenna) and conducted (UFL connector) RF measurement paths via configurable 0 Ω resistor routing, and includes 8 Mbit serial flash for OTA updates.

It interfaces directly with the Wireless Starter Kit Mainboard via dual-row 0.05" pitch connectors, exposing all EFR32MG22 GPIOs, debug signals (SWD, SWO, reset), UART (VCOM), and PTI trace. The board's RF section is fully characterized per ETSI EN 300-328 and FCC 15.247, with measured harmonics meeting relaxed modulated-carrier limits using BLE Coded PHY correction factors.

Key Specifications

Parameter	Value and Actual Design Meaning
Core SoC	EFR32MG22C224F512IM32: ARM Cortex-M33 MCU with 512 kB flash, 32 kB RAM, and integrated 2.4 GHz transceiver
RF Frequency Band	2400–2483.5 MHz: Fully compliant with Bluetooth LE and IEEE 802.15.4 standards in unlicensed ISM band
Output Power	6 dBm: Optimized matching network delivers stable conducted output with <−41.2 dBm harmonic suppression under modulated conditions
Antenna Interface	Integrated inverted-F PCB antenna + UFL connector: Dual-path RF interface enabling radiated testing or conducted lab validation without layout changes
Crystal Oscillators	32.768 kHz LFXO + 38.4 MHz HFXO: Provides precise timing for BLE sleep/wake cycles and RF carrier synthesis
OTA Support	8 Mbit MX25R serial flash: Enables field-upgradable firmware and secure over-the-air device management
EMC Compliance	FCC 15.247 & ETSI EN 300-328 certified: Measured radiated margins ≥4.3 dB on 3rd/5th harmonics using BLE Coded PHY worst-case relaxation

Availability

SLWRB4183A is available at Aetrix Electronics and suitable for Bluetooth LE module development, RF reference design validation, and regulatory pre-compliance testing requiring stable component supply, repeatable antenna performance, and Simplicity Studio integration.

Supply support for SLWRB4183A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Silicon Labs is a fabless semiconductor company specializing in secure, intelligent wireless and wired connectivity solutions for IoT, industrial, and consumer markets.

The SLWRB4183A belongs to the Wireless Gecko Radio Board product line, designed to accelerate development and RF validation of EFR32-based Bluetooth LE and multiprotocol wireless systems with production-ready reference layouts and full regulatory test data.

FAQ

What is the primary function of the SLWRB4183A?

The SLWRB4183A is a reference radio board for the EFR32MG22 Wireless SoC, providing a fully validated 2.4 GHz RF platform for Bluetooth Low Energy development. It enables rapid prototyping, RF performance characterization, antenna matching verification, and regulatory compliance testing - all with the integrated inverted-F antenna and UFL connector for flexible measurement modes.

Does the SLWRB4183A include a microcontroller?

Yes, the SLWRB4183A integrates the EFR32MG22C224F512IM32 Wireless SoC, which combines an ARM Cortex-M33 processor, 512 kB flash, 32 kB RAM, and a 2.4 GHz transceiver. This eliminates the need for external host controllers during initial RF and protocol evaluation - the SLWRB4183A operates as a standalone wireless development node when paired with the Wireless Starter Kit Mainboard.

How is RF output configured between the PCB antenna and UFL connector on the SLWRB4183A?

The SLWRB4183A uses physical 0 Ω resistors to select the RF path: R1 connects the matching network output to the inverted-F antenna by default; moving R1 to R2's footprint routes output to the UFL connector instead. These footprints share overlapping pads to prevent simultaneous connection - ensuring safe, hardware-switched RF path selection without signal integrity compromise.

What EMC standards does the SLWRB4183A meet out-of-the-box?

The SLWRB4183A meets FCC 15.247 and ETSI EN 300-328 requirements for the 2.4 GHz band when operated at 6 dBm output power. Radiated measurements confirm ≥4.3 dB margin on 3rd/5th harmonics using BLE Coded PHY modulation relaxation factors - no shielding can is required for compliance, as verified in the BRD4183A Reference Manual Rev. 1.00.

Can the SLWRB4183A be used for over-the-air firmware updates?

Yes, the SLWRB4183A includes an 8 Mbit MX25R serial flash memory dedicated to over-the-air (OTA) firmware updates. This enables secure, field-deployable firmware upgrades for end devices based on the EFR32MG22, supporting robust device management workflows within Silicon Labs' Simplicity Studio ecosystem - a core capability confirmed in the board's block diagram and Bill of Materials.

SLWRB4183A Specifications

Product attributes: Attribute value

Manufacturer:: Silicon Labs

Series:: Blue Gecko

Packaging:: Bulk

Product Status:: Active

Type:: Transceiver; Bluetooth® 5.x (BLE)

Frequency:: 2.4GHz

Contents:: Board(s)

Utilized IC / Part:: EFR32BG22

SLWRB4183A FAQ

1.How can I place an order for SLWRB4183A through Aetrix?

Please submit a Request for Quotation (RFQ) for SLWRB4183A on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for SLWRB4183A reliable?

The price and inventory of SLWRB4183A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SLWRB4183A is usually 5 days.

3.What payment methods are accepted for SLWRB4183A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SLWRB4183A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SLWRB4183A?

SLWRB4183A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SLWRB4183A order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for SLWRB4183A?

For technical support, including SLWRB4183A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SLWRB4183A requirements.

6.How does Aetrix verify that SLWRB4183A is sourced from the original manufacturer or authorized distributors?

All SLWRB4183A products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SLWRB4183A meets industry standards.

7.What is the process for return or replacement of SLWRB4183A?

All SLWRB4183A units undergo pre-shipment inspection (PSI). If there is an issue with SLWRB4183A, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The SLWRB4183A part is unused and in its original packaging.

Return procedure for SLWRB4183A:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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