{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32G431KBU3","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32G431KBU3","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32G431KBU3","factsUrl":"https://icboms.com/api/mcp/products/STM32G431KBU3","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32G4 series STM32G431KBU3, ARM Cortex-M4F 32-Bit Single-Core MCU, 170MHz, 128KB (128K x 8) FLASH, 32K x 8 RAM, 26 I/O, 1.71V~3.6V, -40°C~125°C, 32-UFQFN Exposed Pad.","salesMarkdown":"The 11-channel 12-bit ADC and four 12-bit DACs let it sample phase currents and output analog setpoints without external converters — a common BOM simplification on servo-drive and battery-charger boards. ## Package and thermal: 32-UFQFPN with exposed pad Housed in a 32-UFQFN exposed-pad package (5x5 mm body), this MCU is a surface-mount part that needs the central thermal pad soldered to a PCB copper island for both mechanical stability and heat sinking. The 26 I/O are brought out on the perimeter; the pad itself is not a signal pin but must be connected to ground (or the appropriate supply plane per the datasheet layout guidelines). ## Supply range and power-on reset The integrated brown-out detect and POR (power-on reset) peripherals mean no external supervisor IC is needed for basic reset sequencing — a cost and board-area saving on high-density designs. ## Lifecycle and sourcing posture STMicroelectronics lists the STM32G431KBU3 as an active product — no NRND or EOL flags, no last-time-buy window.","metaTitle":"STM32G431KBU3 STM32G4 MCU, ARM Cortex-M4F 170MHz","metaDescription":"STM32G431KBU3 32-bit ARM Cortex-M4F MCU, 170MHz, 128KB Flash, 32KB SRAM, 11x12b ADC, 4x12b DAC, -40°C to 125°C, 32-UFQFPN.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"170MHz","Series":"STM32G4","Package":"Tray","RAM Size":"32K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT","Connectivity":"CANbus, I²C, IrDA, LINbus, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"26","Core Processor":"ARM® Cortex®-M4F","Package / Case":"32-UFQFN Exposed Pad","Product Status":"Active","Data Converters":"A/D 11x12b; D/A 4x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32G431","Program Memory Size":"128KB (128K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~125°C(TA)","Supplier Device Package":"32-UFQFPN (5x5)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.1100","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/88082d99dc99f94106e4989f731259ef.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is STM32G431KBU3 obsolete or nearing end of life?","answer":"No."},{"question":"What are the alternatives or equivalents to STM32G431KBU3?","answer":"Within the STM32G4 series, pin-compatible variants differ mainly in Flash density (up to 512 KB) and package pin count. The STM32G431KBU3 sits at the 128 KB Flash / 32-UFQFPN entry point; a higher-memory sibling like the STM32G441 would be the next step up if firmware size exceeds 128 KB. All share the same Cortex-M4F core and peripheral set, so migration is a linker-script change plus a BOM swap."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32G431KBU3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32G431KBU3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T12:53:11.432Z","lastPublished":"2026-07-16T12:53:11.432Z","indexable":true}}