STM32L431KBU3 is out of stock and can be placed on backorder.
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Infineon Technologies
In Stock: 0
Unit Price: $2.06360
Datasheet
ARM® Cortex®-M4 STM32L4 Microcontroller IC 32-Bit 80MHz 128KB (128K x 8) FLASH 32-UFQFPN (5x5)
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ARM® Cortex®-M4 STM32L4 Microcontroller IC 32-Bit 80MHz 128KB (128K x 8) FLASH 32-UFQFPN (5x5)
Getting Started with STM32 and Nucleo Part 1: Introduction to STM32CubeIDE and Blinky – Digi-Key

STM32L431KBU3

DigiKey Part Number
497-18594-ND
Manufacturer
Manufacturer Product Number
STM32L431KBU3
Description
IC MCU 32BIT 128KB FLSH 32UFQFPN
Manufacturer Standard Lead Time
52 Weeks
Customer Reference
Detailed Description
ARM® Cortex®-M4 STM32L4 Microcontroller IC 32-Bit 80MHz 128KB (128K x 8) FLASH 32-UFQFPN (5x5)
Datasheet
 Datasheet
EDA/CAD Models
STM32L431KBU3 Models
Product Attributes
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Category
Program Memory Size
Mfr
Program Memory Type
FLASH
Series
RAM Size
64K x 8
Packaging
Tray
Voltage - Supply (Vcc/Vdd)
1.71V ~ 3.6V
Part Status
Active
Data Converters
A/D 10x12b; D/A 2x12b
DigiKey Programmable
Not Verified
Oscillator Type
Internal
Core Processor
ARM® Cortex®-M4
Operating Temperature
-40°C ~ 125°C (TA)
Core Size
Mounting Type
Surface Mount
Speed
80MHz
Supplier Device Package
32-UFQFPN (5x5)
Connectivity
CANbus, I2C, IrDA, LINbus, QSPI, SAI, SPI, SWPMI, UART/USART
Package / Case
32-UFQFN Exposed Pad
Peripherals
Brown-out Detect/Reset, DMA, PWM, WDT
Base Product Number
Number of I/O
26
Associated Products
Environmental & Export Classifications
Product Questions and Answers
Additional Resources
Substitutes (1)
Part NumberManufacturerQuantity AvailableDigiKey Part NumberUnit PriceSubstitute Type
S6E1C12B0AGN20000Infineon Technologies0448-S6E1C12B0AGN20000-ND$2.06360Similar
In-Stock: 0
2,940 expected in stock on 06-Jan-2027
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All prices are in USD
Tray
QuantityUnit PriceExt Price
1$5.36000$5.36
10$4.06700$40.67
50$3.54700$177.35
100$3.38620$338.62
500$3.11390$1,556.95
Note: Due to DigiKey value-add services the packaging type may change when product is purchased at quantities beneath the standard package.
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