STM32L431CBY6TR

STMicroelectronics · WLCSP · Active

Part number: STM32L431CBY6TR
Manufacturer: STMicroelectronics
Package: WLCSP
Status: Active
Stock: Available / RFQ
Price: $7.92
Year / date code: 2025

Product Overview

STM32L431CBY6TR (STMicroelectronics, WLCSP) — IC MCU 32BIT 128KB FLASH

Technical Specifications

Part Number: STM32L431CBY6TR
Manufacturer: STMicroelectronics
Series: STM32L431
Package / Case: WLCSP
Package Family: BGA
Lifecycle Status: Active
Category: Microcontroller (MCU)
Mounting Type: Surface Mount (SMT)

Electrical Characteristics

Core Architecture: Arm Cortex-M (exact core per ST datasheet)
Flash / SRAM: Confirm density suffix on the ST ordering code before design-in
Supply Voltage: Typical MCU rail — verify VDD range in the datasheet
I/O & Peripherals: UART, SPI, I²C, timers, ADC, and USB (when present) per variant
Temperature Grade: Industrial / commercial options by suffix — confirm on datasheet
Package Constraint: WLCSP footprint and pinout must match the PCB

Package Information

Package: WLCSP
Package Family: BGA
Mounting: Surface Mount (SMT)
Outline Note: Package marking on this page is for sourcing reference. Confirm body size, pitch, and land pattern from the manufacturer datasheet before layout.

Applications

STM32L431CBY6TR is an STMicroelectronics STM32-class microcontroller used in industrial control, consumer electronics, motor drivers, USB devices, and OEM/EMS controller boards. Typical designs lock the WLCSP footprint, Flash/SRAM size, and peripheral set. Confirm the full ordering code against the ST datasheet before swapping nearby STM32L431 suffixes.

Procurement notes

Confirm the full ordering code, package (WLCSP), and quantity on RFQ. SJ Chip replies with stock, condition, and lead time. Nearby MPNs are for evaluation only.

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Potential Alternatives (WLCSP)

FAQ

Where to buy STM32L431CBY6TR?

You can request STM32L431CBY6TR from SJ Chip via the RFQ form on this page or the site-wide RFQ. We confirm manufacturer (STMicroelectronics), package, quantity, and lead time on the quotation.

Is STM32L431CBY6TR available?

Listed inventory shows 44,473 pcs. Lot, date code, and shippable quantity are confirmed on RFQ — treat the listing as availability to quote, not a guaranteed cart ship.

What is the package of STM32L431CBY6TR?

The sourcing listing shows package WLCSP. Always verify body size, pitch, and land pattern against the STMicroelectronics datasheet before PCB layout.

What are alternatives to STM32L431CBY6TR?

Potential alternatives include STM32L431CBY7TR, STM32L431CBU6TR, STM32L431CBT6TR and other same-series or same-package listings — all require datasheet and pinout checks. These are similar stock for evaluation, not automatic drop-in replacements.

Sourcing information

Part Number	STM32L431CBY6TR
Manufacturer	STMicroelectronics
Package	WLCSP
Description	IC MCU 32BIT 128KB FLASH
Availability	Listed inventory: 44,473 pcs — confirm lot, date code, and quantity on RFQ
RFQ	Submit the full part number and quantity through the RFQ form
Lead Time	Lead time is confirmed on the quotation after RFQ. In-stock conventional lots often ship in 3–5 working days from Hong Kong; special, allocation, or obsolete lines are quoted separately.
Condition	Condition is stated on the quotation/PI (new, surplus, or EOL). Lots are inspected before shipment.