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HomeProductsRF/IF and RFIDRF Transceiver ICsSI4438-B1C-FMR
Silicon Labs
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SI4438-B1C-FMR - Silicon Labs

Manufacturer Part Number
SI4438-B1C-FMR
Manufacturer
Energy Micro (Silicon Labs)
Allelco Part Number
32D-SI4438-B1C-FMR
ECAD Model
Parts Description
IC RF TXRX+MCU ISM<1GHZ 20VFQFN
Detailed Description
Package
20-VFQFN Exposed Pad
Data sheet
Si4438.pdf
Si4438.pdf
RoHs Status
RoHS Compliant
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In stock: 6940

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Specifications

SI4438-B1C-FMR Tech Specifications
Silicon Labs - SI4438-B1C-FMR technical specifications, attributes, parameters and parts with similar specifications to Silicon Labs - SI4438-B1C-FMR

Product Attribute Attribute Value  
Manufacturer Energy Micro (Silicon Labs)  
Voltage - Supply 1.8V ~ 3.6V  
Type TxRx Only  
Supplier Device Package 20-QFN (4x4)  
Series -  
Serial Interfaces SPI  
Sensitivity -124dBm  
RF Family/Standard General ISM < 1GHz  
Protocol -  
Power - Output 20dBm (Max)  
Package / Case 20-VFQFN Exposed Pad  
Product Attribute Attribute Value  
Package Tape & Reel (TR)  
Operating Temperature -40°C ~ 85°C  
Mounting Type Surface Mount  
Modulation FSK, GFSK, GMSK, OOK  
Memory Size -  
GPIO 4  
Frequency 425MHz ~ 525MHz  
Data Rate (Max) 500kbps  
Current - Transmitting 75mA  
Current - Receiving 14mA  
Base Product Number SI4438  

Parts Introduction

Manufacturer Part Number

SI4438-B1C-FMR

Manufacturer

Energy Micro (Silicon Labs)

Introduction

RF Transceiver IC designed for general ISM band applications below 1GHz

Product Features and Performance

Frequency range: 425MHz to 525MHz

Operating temperature: -40°C to 85°C

Supply voltage: 1.8V to 3.6V

Transmit current: 75mA

Transmit power: 20dBm (max)

Data rate: up to 500kbps

Receiver sensitivity: -124dBm

Supports FSK, GFSK, GMSK, and OOK modulation

4 GPIOs

SPI serial interface

Product Advantages

High transmit power and receiver sensitivity for long range communication

Low power consumption in both transmit and receive modes

Configurable and flexible for various ISM band applications

Key Technical Parameters

Package: 20-VFQFN Exposed Pad

Mounting type: Surface mount

Quality and Safety Features

RoHS compliant

Compatibility

Can be used in general ISM band applications below 1GHz

Application Areas

Wireless sensors, smart home devices, industrial automation, etc.

Product Lifecycle

Current product, no signs of discontinuation

Replacements and upgrades may be available in the future as technology evolves

Key Reasons to Choose

High performance RF transceiver capabilities

Low power operation

Flexible and configurable for diverse applications

Proven reliability and quality from a reputable manufacturer

Parts with Similar Specifications

The three parts on the right have similar specifications to Silicon Labs SI4438-B1C-FMR

Product Attribute SI4438-B1C-FMR SI4438-C2A-GM SI4438-B1C-FM SI4438-C2A-GMR
Part Number SI4438-B1C-FMR SI4438-C2A-GM SI4438-B1C-FM SI4438-C2A-GMR
Manufacturer Silicon Labs Silicon Labs Silicon Labs Silicon Labs
RF Family/Standard General ISM < 1GHz General ISM < 1GHz General ISM < 1GHz General ISM < 1GHz
Modulation FSK, GFSK, GMSK, OOK FSK, GFSK, GMSK, OOK FSK, GFSK, GMSK, OOK FSK, GFSK, GMSK, OOK
Memory Size - - - -
Voltage - Supply 1.8V ~ 3.6V 1.8V ~ 3.6V 1.8V ~ 3.6V 1.8V ~ 3.6V
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Type TxRx Only TxRx Only TxRx Only TxRx Only
Package / Case 20-VFQFN Exposed Pad 20-VFQFN Exposed Pad 20-VFQFN Exposed Pad 20-VFQFN Exposed Pad
Frequency 425MHz ~ 525MHz 425MHz ~ 525MHz 425MHz ~ 525MHz 425MHz ~ 525MHz
Data Rate (Max) 500kbps 500kbps 500kbps 500kbps
Sensitivity -124dBm -124dBm -124dBm -124dBm
Supplier Device Package 20-QFN (4x4) 20-QFN (4x4) 20-QFN (4x4) 20-QFN (4x4)
GPIO 4 4 4 4
Operating Temperature -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C
Current - Transmitting 75mA 75mA 75mA 75mA
Power - Output 20dBm (Max) 20dBm (Max) 20dBm (Max) 20dBm (Max)
Protocol - - - -
Current - Receiving 14mA 13.7mA 14mA 13.7mA
Serial Interfaces SPI SPI SPI SPI
Base Product Number SI4438 SI4438 SI4438 SI4438
Package Tape & Reel (TR) Tray Tray Tape & Reel (TR)
Series - - - -

SI4438-B1C-FMR Datasheet PDF

Download SI4438-B1C-FMR pdf datasheets and Silicon Labs documentation for SI4438-B1C-FMR - Silicon Labs.

Datasheets
Si4438.pdf
PCN Packaging
Labeling Change 14/Dec/2021.pdf Mult Dev Label Chgs 20/Oct/2021.pdf
PCN Assembly/Origin
Site Change 18/Jan/2022.pdf
Errata
Si4x6x-B1B and Si4438-B1C Errata.pdf
PCN Design/Specification
PB-1412051 05/Dec/2014.pdf PB-1406191 19/Jun/2014.pdf
HTML Datasheet
Si4438.pdf

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

View More
Silicon Labs

SI4438-B1C-FMR

Silicon Labs
32D-SI4438-B1C-FMR

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