SI4455-B1A-FMR

IC RF TXRX ISM<1GHZ 20VFQFN
Part Description

IC RF TxRx Only General ISM < 1GHz 283MHz ~ 960MHz 20-VFQFN Exposed Pad

Quantity 61 Available (as of May 5, 2026)
Product CategoryRF Transceiver ICs
ManufacturerSilicon Labs
Manufacturing StatusNot For New Designs
Manufacturer Standard Lead Time12 Weeks
Datasheet

Specifications

Part Package 20-VFQFN Exposed Pad
Device Package 20-QFN (3×3)
Mounting Method Surface Mount
Voltage 1.8V ~ 3.6V
Operating Temperature -40°C ~ 85°C
Type: TxRx Only
RF Family/Standard: General ISM < 1GHz
Modulation: FSK, GFSK, OOK
Frequency: 283MHz ~ 960MHz
Data Rate (Max): 500kbps
Power – Output: 13dBm (Max)
Sensitivity: -116dBm
Serial Interfaces: SPI
GPIO: 4
Voltage – Supply: 1.8V ~ 3.6V
Current – Receiving: 10mA
Current – Transmitting: 18mA ~ 30mA

Environmental

REACH ComplianceREACH Unknown
RoHS ComplianceROHS3 Compliant
Moisture Sensitivity Level2 (1 Year)
ECCN5A991B
HTS Code8542.39.0001
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