SI4021-A1-FT is Obsolete and no longer manufactured.
Available Substitutes:

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Texas Instruments
In Stock: 3.641
Unit Price: €1.57000
Datasheet

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Microchip Technology
In Stock: 575
Unit Price: €1.79000
Datasheet
RF Transmitter FSK, OOK 433MHz, 868MHz, 915MHz 8dBm 512kbps PCB, Surface Mount Antenna 16-TSSOP (0.173", 4.40mm Width)
Image shown is a representation only. Exact specifications should be obtained from the product data sheet.

SI4021-A1-FT

DigiKey Part Number
336-1622-5-ND
Manufacturer
Manufacturer Product Number
SI4021-A1-FT
Description
RF TX IC FSK 433/868MHZ 16TSSOP
Customer Reference
Detailed Description
RF Transmitter FSK, OOK 433MHz, 868MHz, 915MHz 8dBm 512kbps PCB, Surface Mount Antenna 16-TSSOP (0.173", 4.40mm Width)
Datasheet
 Datasheet
Product Attributes
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Category
Power - Output
8dBm
Manufacturer
Silicon Labs
Current - Transmitting
24mA
Series
Data Interface
PCB, Surface Mount
Packaging
Tube
Antenna Connector
PCB, Surface Mount
Part Status
Obsolete
Voltage - Supply
2.2V ~ 5.4V
DigiKey Programmable
Not Verified
Operating Temperature
-40°C ~ 85°C
Frequency
433MHz, 868MHz, 915MHz
Mounting Type
Surface Mount
Applications
General Purpose
Package / Case
16-TSSOP (0.173", 4.40mm Width)
Modulation or Protocol
FSK, OOK
Supplier Device Package
16-TSSOP
Data Rate (Max)
512kbps
Base Product Number
Environmental & Export Classifications
Product Questions and Answers
Additional Resources
Substitutes (2)
Part NumberManufacturerQuantity AvailableDigiKey Part NumberUnit PriceSubstitute Type
CC115LRGPRTexas Instruments3.641296-35721-1-ND€1.57000Similar
MICRF405YML-TRMicrochip Technology575576-1965-1-ND€1.79000Similar
Obsolete
This product is no longer manufactured. View Substitutes or Alternative Package Types