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.
SX1243IULTRT Real Image
Same model may have multiple batches, images only for reference.

SX1243IULTRT

Part No SX1243IULTRT
Manufacturer Semtech Corporation
Catalog RF Transmitters
Description Low Cost Low Current Integrated Transmitter 310 to 928MHz Frequency Agile | RF TX IC FHSS 310-450MHZ 8UFDFN
Sample
Rohs State rohs
ECAD Module
Need Help

Products specifications Report Issue?

Categories RF/IF and RFID
Manufacturer Semtech Corporation
Packaging Reel
Frequency 310MHz ~ 450MHz, 860MHz ~ 870MHz, 902MHz ~ 928MHz
Applications RKE, Security Systems
Modulation or Protocol FHSS, FSK, OOK
Data Rate (Maximum) 100kbps
Power - Output 10dBm
Transmitting Current 17.5mA
Data Interface PCB, Surface Mount
Antenna Connector PCB, Surface Mount
Supply Voltage (V) 1.8V ~ 3.7V
Temperature Range - Operating -40°C ~ 85°C
Manufacturer Package 8-UFDFN Exposed Pad
Manufacturer Pack Quantity 1
MSL Level 1 (Unlimited)
Win Source Part Number 1262749-SX1243IULTRT
Manufacturer Homepage www.semtech.com
Popularity Medium
Supply and Demand Status Balance
Ultra Librarian 3D Model Ultra Librarian SX1243IULTRT CAD Model

Description

The Semtech SX1243IULTRT is a low-power, multi-channel sub-GHz transceiver designed for use in remote keyless entry (RKE) and security systems.

  • Frequency Range: 310MHz to 450MHz, 860MHz to 870MHz, and 902MHz to 928MHz
  • Modulation: supports frequency hopping spread spectrum (FHSS), frequency shift keying (FSK), and on-off keying (OOK) modulation.
  • Output Power: up to 10dBm
  • Data Rate: up to 100kbps
  • Package: 8-UFDFN exposed pad package
  • Applications: RF/IF and RFID applications.
  • Supply Voltage Range: 1.8V to 3.7V
  • Transmitting Current: 17.5mA

You May Also Be Interested in

ATA8404-6DQY Real Image
ATA8404-6DQY
Atmel
UHF ASK/FSK Industrial Transmitter
Need more? Email Us
BH1418KN Real Image
BH1418KN
Rohm Semiconductor
FM stereo transmitter IC for audio systems
Lowest to $1.7106
T5754-6AQ Real Image
T5754-6AQ
Microchip Technology
UHF ASK/FSK TRANSMITTER | RF TX IC ASK 429-439MHZ 8TSSOP
Need more? Email Us
Picture of SI4011-CC-GTR
SI4011-CC-GTR
Silicon Labs
IC TRANSMITTER 10MSOP / RF Transmitter Antenna
Need more? Email Us
MAX1479ATE+T Real Image
MAX1479ATE+T
Maxim Integrated
IC TRANSM ASK/FSK 16-TQFN
Lowest to $16.3225
MAX1472EKA-T Maxim Integrated
MAX1472EKA-T
Maxim Integrated
Need more? Email Us
ATA8742C-PXQW Real Image
ATA8742C-PXQW
Microchip Technology
RF XMITTER ASK/FSK 433MHZ 24VQFN
Need more? Email Us
MAX1472AKA+T Real Image
MAX1472AKA+T
Maxim Integrated
Low-Power Crystal-Based Ask Transmitter Automotive 8-Pin SOT-23 T/R / IC TRANSMITTER ASK SOT23-8
Lowest to $1.8866
ATA8403-6AQY Real Image
ATA8403-6AQY
Atmel
UHF ASK/FSK Industrial Transmitter
Need more? Email Us

Top Sellers

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 $17.3444
DRV8432DKD Real Image1
DRV8432DKD
Texas Instruments
IC BRIDGE DRIVER PAR 36HSSOP
Lowest to $19.3374
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
SSD1963QL9 real image6483
SSD1963QL9
Solomon
LCD Display Controller 128-Pin LQFP Tray
Lowest to $4.2055
ICM-42605 real image24295
ICM-42605
TDK InvenSense
IMU ACCEL/GYRO/TEMP I2C/SPI LGA
Lowest to $10.4542
EC2-5NU real image3736
EC2-5NU
Kemet
RELAY GEN PURPOSE DPDT 2A 5V
Lowest to $0.9677
ULN2803ADWR real image9675
ULN2803ADWR
Texas Instruments
TRANS 8NPN DARL 50V 0.5A 18SO
Lowest to $5.2271
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 $2.6155
BME280 Real Image
BME280
Bosch Sensortec
SENSOR PRESSURE HUMIDITY TEMP
Lowest to $3.9204
FT4232HL-REEL real image4451
FT4232HL-REEL
FTDI, Future Technology Devices International Ltd
IC USB HS QUAD UART/SYNC 64-LQFP
Lowest to $13.3053
FT4232HL real image4446
FT4232HL
FTDI, Future Technology Devices International Ltd
IC USB HS QUAD UART/SYNC 64-LQFP
Lowest to $13.3053
BMI160 real image
BMI160
Bosch Sensortec
IMU ACCEL/GYRO I2C/SPI 14LGA / Accelerometer, Gyroscope, 6 Axis Sensor I2C, SPI Output
Lowest to $3.6828
FT232RL-REEL Real Image
FT232RL-REEL
FTDI, Future Technology Devices International Ltd
IC USB FS SERIAL UART 28-SSOP
Lowest to $5.4647
FT230XS-R real image4301
FT230XS-R
FTDI, Future Technology Devices International Ltd
IC USB SERIAL BASIC UART 16SSOP
Lowest to $5.9399

Pricing & Ordering

Quantity Unit Price Ext. Price
30+ $1.9061 $57.1830
65+ $1.5640 $101.6600
100+ $1.5151 $151.5100
140+ $1.4662 $205.2680
180+ $1.4173 $255.1140
240+ $1.2707 $304.9680
* Prices exclude shipping and taxes. Shipping costs are calculated at checkout.
Estimate Shipping
Enter your destination to get a shipping estimate
*
Availability: 28,590 pieces
MOQ: 30 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