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Silicon Labs SLWRB4182A

Name: SLWRB4182A
Brand: Silicon Labs
SKU: SLWRB4182A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SLWRB4182A

Manufacturer:: Silicon Labs

Category:: RF, RFID, Wireless Evaluation Boards

Package:

Datasheet:: SLWRB4182A.pdf

Description:: EFR32XG22 WIRELESS GECKO 2.4 GHZ

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:205

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Product details

Overview

SLWRB4182A from Silicon Labs is a wireless development reference board built around the EFR32MG22C224F512IM40 2.4 GHz Bluetooth Low Energy SoC, featuring ARM Cortex-M33 core, 512 kB flash, 32 kB RAM, and optimized 6 dBm RF output power. It integrates an inverted-F PCB antenna and UFL connector for conducted testing, and serves as an RF reference design for BLE applications.

For engineers reviewing the SLWRB4182A datasheet, SLWRB4182A pinout, SLWRB4182A application, or SLWRB4182A equivalent, this page delivers verified mechanical, RF performance, EMC compliance, and interface details - including full GPIO access via dual-row 0.05" connectors, 32.768 kHz / 38.4 MHz crystal support, and 8 Mbit serial flash for OTA updates.

Technical Context

The SLWRB4182A implements a three-element 2.4 GHz impedance matching network with harmonic filtering and DC blocking, tuned specifically for 6 dBm operation using Murata LQP03HQ2N6B02 (2.6 nH), GRM0335C1H1R2WA01D (1.2 pF), and GJM0335C1E180GB01D (18 pF) components. Its RF path supports selection between integrated inverted-F antenna and external UFL-connected antenna via repositionable 0 Ω resistors.

It operates with dual crystal oscillators (32.768 kHz LFXO and 38.4 MHz HFXO), powers the RFVDD and PAVDD rails at 1.8 V via on-chip DC-DC converter during radiated testing, and delivers measured unmodulated EIRP of 9.2 dBm at 2450 MHz - exceeding conducted output due to antenna gain. Harmonic suppression meets ETSI EN 300-328 and FCC 15.247 limits after modulation-based relaxation.

Key Specifications

Parameter	Value and Actual Design Meaning
Core MCU	EFR32MG22C224F512IM40: ARM Cortex-M33, 512 kB flash, 32 kB RAM
RF Frequency Band	2400–2483.5 MHz: Fully compliant with BLE, Zigbee, and proprietary 2.4 GHz protocols
Output Power	6 dBm conducted: Optimized matching network enables stable 6 dBm at RF2G4_IO pin
Antenna Interface	Integrated inverted-F PCB antenna + UFL connector: Dual-path RF output with manual 0 Ω resistor swap
Oscillators	32.768 kHz LFXO + 38.4 MHz HFXO: Enables precise timing for BLE connection intervals and RF synthesis
Memory & Storage	8 Mbit MX25R serial flash: Supports secure over-the-air firmware updates without host MCU intervention
EMC Compliance	FCC 15.247 & ETSI EN 300-328: Verified radiated margins ≥3.9 dB on 3rd/5th harmonics using BLE Coded PHY relaxation

Availability

SLWRB4182A is available at Aetrix Electronics and suitable for Bluetooth Low Energy development, RF reference design validation, and wireless protocol stack evaluation requiring stable component supply, traceable sourcing, and lifecycle continuity.

Supply support for SLWRB4182A 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 headquartered in Austin, TX, specializing in secure, low-power wireless SoCs and timing solutions for IoT edge devices.

The SLWRB4182A belongs to Silicon Labs' Wireless Gecko Radio Board family, designed explicitly to accelerate development and RF validation of EFR32MG22-based Bluetooth Low Energy systems - with emphasis on production-ready matching networks, EMC-compliant layout, and seamless Simplicity Studio integration.

FAQ

What is the primary function of the SLWRB4182A?

The SLWRB4182A is a reference radio board for the EFR32MG22 SoC, enabling rapid development and RF characterization of Bluetooth Low Energy applications. It provides full GPIO access, integrated inverted-F antenna, UFL connector for conducted testing, and pre-validated 2.4 GHz matching network optimized for 6 dBm output - all while serving as a production-relevant RF layout example for customer designs.

Does the SLWRB4182A require a separate mainboard to operate?

Yes, the SLWRB4182A must be plugged into the Wireless Starter Kit Mainboard (WSTK) to function. The WSTK supplies power, debug interface (SWD), Virtual COM port, packet trace, display, buttons, LEDs, and expansion capabilities. The SLWRB4182A itself contains only the RF subsystem, MCU, crystals, and memory - no standalone power or debug circuitry.

How is RF output routed between the onboard antenna and UFL connector on the SLWRB4182A?

RF output routing on the SLWRB4182A is controlled by physically relocating a 0 Ω resistor: default placement connects the matching network output to the inverted-F antenna; moving it to the alternate footprint routes output to the UFL connector. This hardware-selectable path prevents simultaneous connection and ensures impedance integrity per measurement mode.

What EMC standards has the SLWRB4182A been validated against?

The SLWRB4182A has been tested and verified compliant with both FCC Part 15.247 (2400–2483.5 MHz band) and ETSI EN 300-328. Radiated measurements confirm worst-case modulated margins of ≥3.9 dB on 3rd/5th harmonics using BLE Coded PHY relaxation factors, and fundamental EIRP remains within 20 dBm (ETSI) and 30 dBm (FCC) limits.

Can the SLWRB4182A be used for protocols other than Bluetooth Low Energy?

Yes, the SLWRB4182A supports any 2.4 GHz protocol implemented on the EFR32MG22, including Zigbee, Thread, Amazon Sidewalk, and proprietary PHYs. Its RF front-end, matching network, and antenna are frequency-agnostic across 2400–2483.5 MHz, and Simplicity Studio provides protocol-agnostic radio configuration tools - making SLWRB4182A applicable beyond BLE-specific use cases.

SLWRB4182A 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

SLWRB4182A FAQ

1.How can I place an order for SLWRB4182A through Aetrix?

Please submit a Request for Quotation (RFQ) for SLWRB4182A 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 SLWRB4182A reliable?

The price and inventory of SLWRB4182A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SLWRB4182A is usually 5 days.

3.What payment methods are accepted for SLWRB4182A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SLWRB4182A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SLWRB4182A?

SLWRB4182A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SLWRB4182A 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 SLWRB4182A?

For technical support, including SLWRB4182A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SLWRB4182A requirements.

6.How does Aetrix verify that SLWRB4182A is sourced from the original manufacturer or authorized distributors?

All SLWRB4182A 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 SLWRB4182A meets industry standards.

7.What is the process for return or replacement of SLWRB4182A?

All SLWRB4182A units undergo pre-shipment inspection (PSI). If there is an issue with SLWRB4182A, 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 SLWRB4182A part is unused and in its original packaging.

Return procedure for SLWRB4182A:

1.Submit a request within 90 days.

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

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