EN
  • EN
  • DE
loading
Mfr. Part No. Qty. Price

No items in the cart

View Cart
Same model may have multiple batches, images only for reference.
SI4431-B1-FM Real Image
Same model may have multiple batches, images only for reference.

SI4431-B1-FM

Part No SI4431-B1-FM
Manufacturer Silicon Labs
Catalog RF Transceiver ICs
Description Si4430/31/32 ISM TRANSCEIVER
Datasheet
SI4431-B1-FM Datasheet
Sample
Rohs State rohs
ECAD Module
Need Help

Products specifications Report Issue?

Categories RF/IF and RFID
Manufacturer Silicon Labs
Packaging Tube
Type TxRx Only
RF Family/Standard General ISM
Modulation FSK, GFSK, OOK
Frequency 240MHz ~ 930MHz
Data Rate (Maximum) 256kbps
Power - Output 13dBm (Maximum)
Sensitivity -121dBm
Serial Interfaces SPI
GPIO 3
Operating Supply Voltage 1.8 V ~ 3.6 V
Current - Receiving 18.5mA
Current - Transmitting 17mA ~ 30mA
Operating Temperature Range -40°C ~ 85°C
Package 20-VFQFN Exposed Pad
Win Source Part Number 1249071-SI4431-B1-FM
Manufacturer Homepage www.silabs.com
Popularity Medium
Supply and Demand Status Limited
Family Name Si4431
Introduction Date July 24, 2008
ECCN 5A991.b
Country of Origin Taiwan
Halogen Free Compliant
Estimated EOL Date 2019
Ultra Librarian 3D Model Ultra Librarian SI4431-B1-FM CAD Model

Description

The Silicon Labs SI4431-B1-FM is an RF/IF and RFID component that operates at a frequency range of 240MHz to 930MHz.

  • Sensitivity: -121dBm
  • Power Output: 13dBm
  • Application: suitable for use in general ISM RF family/standard applications
  • Modulation: uses FSK, GFSK, and OOK modulation
  • Maximum Data Rate: 256kbps
  • Serial Interfaces: uses SPI serial interfaces

You May Also Be Interested in

QN9030HN/001Z NXP USA Inc.
QN9030HN/001Z
NXP / Nexperia
IC RF TXRX+MCU BLE 40HVQFN
Need more? Email Us
NRF54L05-QFAA-R7 Nordic Semiconductor ASA
NRF54L05-QFAA-R7
Nordic Semiconductors
IC RF TXRX+MCU
Lowest to $4.3985
EFR32FG25B221F1920IM56-B Silicon Labs
EFR32FG25B221F1920IM56-B
Silicon Labs
IC RF TXRX 802.15.4 56QFN
Need more? Email Us
DA14699-00000HR2 Renesas Electronics Corporation
DA14699-00000HR2
Renesas Electronics America
IC RF TXRX+MCU BLE 100VFBGA
Need more? Email Us
EFR32FG1V131F64GM48-C0 Silicon Labs
EFR32FG1V131F64GM48-C0
Silicon Labs
IC RF TXRX+MCU 802.15.4 48QFN
Need more? Email Us
EFR32BG13P632F512GM48-D Silicon Labs
EFR32BG13P632F512GM48-D
Silicon Labs
IC RF TXRX+MCU BLE 48QFN
Need more? Email Us
EFR32MG1P132F256IM32-C0R Silicon Labs
EFR32MG1P132F256IM32-C0R
Silicon Labs
IC RF TXRX+MCU 802.15.4 32QFN
Need more? Email Us
EFR32FG1V132F256GM32-C0 Silicon Labs
EFR32FG1V132F256GM32-C0
Silicon Labs
IC RF TXRX+MCU 32QFN
Need more? Email Us
EFR32MG12P433F1024IM48-C Silicon Labs
EFR32MG12P433F1024IM48-C
Silicon Labs
IC RF TXRX+MCU 802.15.4 48QFN
Need more? Email Us

Top Sellers

ULN2803ADW Real Image
ULN2803ADW
Texas Instruments
DARLINGTON TRANSISTOR ARRAY | TRANS 8NPN DARL 50V 0.5A 18SO
Lowest to $5.4647
FT4232HL real image4446
FT4232HL
FTDI, Future Technology Devices International Ltd
IC USB HS QUAD UART/SYNC 64-LQFP
Lowest to $13.3053
PI3740-00-LGIZ real image
PI3740-00-LGIZ
Vicor Corporation
DC DC CONVERTER 10-50V / 8V – 60VIN , 10V – 50VOUT , 50 – 140W Cool-Power ZVS Buck-Boost Regulator
Lowest to $41.3948
ICM-42688-P Real Image2
ICM-42688-P
TDK InvenSense
MOTION SENSOR / Accelerometer, Gyroscope, 6 Axis Sensor Output
Lowest to $17.8196
BMI160 real image
BMI160
Bosch Sensortec
IMU ACCEL/GYRO I2C/SPI 14LGA / Accelerometer, Gyroscope, 6 Axis Sensor I2C, SPI Output
Lowest to $3.6828
FT234XD-R real image
FT234XD-R
FTDI, Future Technology Devices International Ltd
USB-to-UART 1-CH 512byte FIFO 5V 12-Pin DFN EP T/R / IC USB SERIAL BASIC UART 12DFN
Lowest to $4.5143
NTA4153NT1G real image4110
NTA4153NT1G
ON Semiconductor
MOSFET N-CH 20V 915MA SOT-416
Lowest to $0.0543
BME280 Real Image
BME280
Bosch Sensortec
SENSOR PRESSURE HUMIDITY TEMP
Lowest to $3.9204
AR8033-AL1A real image2016
AR8033-AL1A
Atheros
Ethernet TXRX Single Chip 1-Port 3.3V 10Mbps/100Mbps/1000Mbps 48-Pin QFN EP Tray
Lowest to $2.6071
74HC595D,118 label picture
74HC595D,118
Nexperia USA Inc.
Counter Shift Registers 8-bit serial-in, serial or parallel-out shift register with output latches; 3 - state
Lowest to $0.1046
TPSM63606RDLR Real Image
TPSM63606RDLR
Texas Instruments
DC DC CONVERTER 1-16V / Non-Isolated PoL Module DC DC Converter 1 Output 1 ~ 16V 6A 3V - 36V Input
Lowest to $13.4125
EPM3128ATC100-10N real image
EPM3128ATC100-10N
Altera
IC CPLD 128MC 10NS 100TQFP
Lowest to $3.3015
FT230XQ-R real image21397
FT230XQ-R
FTDI, Future Technology Devices International Ltd
IC USB SERIAL BASIC UART 16QFN
Lowest to $5.9399
FT232RL-REEL Real Image
FT232RL-REEL
FTDI, Future Technology Devices International Ltd
IC USB FS SERIAL UART 28-SSOP
Lowest to $5.2271
BM06B-GHS-TBT(LF)(SN)(N) Real Image2
BM06B-GHS-TBT(LF)(SN)(N)
JST Sales America Inc.
CONN HEADER SMD 6POS 1.25MM
Lowest to $0.4985

Pricing & Ordering

Quantity Unit Price Ext. Price
14+ $3.8121 $53.3694
32+ $3.1279 $100.0928
50+ $3.0301 $151.5050
69+ $2.9324 $202.3356
89+ $2.8346 $252.2794
119+ $2.5414 $302.4266
* Prices exclude shipping and taxes. Shipping costs are calculated at checkout.
Estimate Shipping
Enter your destination to get a shipping estimate
*
Availability: 12,500 pieces
MOQ: 14 pcs
Order Increment : 1 pcs
*Need More Quantity? *Request a Bulk Quantity Quotation?
Ordering Guidelines

Shipping Information

Shipped from HK warehouse
Expected Shipping Date
Ship today if order in (HKT)
Supplier Lead-Time Call for availability
Estimate shipping fee
Enter your destination to get a shipping estimate
Estimate Shipping Fee

Contact Us

*
*
*

FRAUD PREVENTION REMINDERS

Recently, We have discovered that criminals falsely claimed to be WIN SOURCE to commit fraud. Please note that the only official website & email suffix are win-source.group, win-source.net, winsourcectl.com and winsourceelec.com

More details about fraud prevention
About Us
Customer Service
Solutions
Copyright © 2026 WIN SOURCE. All rights reserved.
For detailed contact information and office addresses in our key locations, including Irvine, Munich, Toronto, Singapore, Seoul, Bangalore, Bologna, Yamanashi, Hong Kong, and Mainland China, please visit our website.
Trust Guard Security Scanned
RFQ RFQ RFQ BOM BOM BOM API API API Sell Sell Sell your Excess