{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32G431CBU3","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32G431CBU3","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32G431CBU3","factsUrl":"https://icboms.com/api/mcp/products/STM32G431CBU3","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32G431CBU3, STM32G4 series, 32-Bit Single-Core ARM Cortex-M4F MCU, 170MHz, 128KB Flash, 32K x 8 RAM, 42 I/O, 1.71V–3.6V, -40°C to 125°C, 48-UFQFN Exposed Pad.","salesMarkdown":"The 18-channel 12-bit ADC and four 12-bit DACs let it handle multiple analog feedback signals directly, which cuts the BOM count for mixed-signal designs. ## Extended temperature range — where this part lives The 125°C ceiling is a genuine differentiator from the 85°C limit on many Cortex-M3 parts in the same footprint, and it avoids a separate high-temp derating exercise. ## 48-UFQFN exposed pad — rework and thermal notes The 48-UFQFN package (7x7 mm body) with an exposed pad is a small footprint that saves board area, but the thermal pad needs a via stitch under it to pull heat into the ground plane — without that, the junction climbs fast above 85°C ambient. ## Supply range and peripheral set The internal oscillator means you can skip an external crystal for non-timing-critical applications, though the RTC accuracy will drift without one. ROHS3 compliant, which simplifies compliance for EU and global markets.","metaTitle":"STM32G431CBU3 MCU, ARM Cortex-M4F 170 MHz, 128KB Flash","metaDescription":"STMicroelectronics STM32G431CBU3 32-bit MCU with 170 MHz ARM Cortex-M4F, 128KB Flash, 32K x 8 RAM, 18x12b ADC, 4x12b DAC, -40°C to 125°C.","metaKeywords":null},"attributes":{"series":"STM32G4","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","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":"42","Core Processor":"ARM® Cortex®-M4F","Package / Case":"48-UFQFN Exposed Pad","Product Status":"Active","Data Converters":"A/D 18x12b; 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":"48-UFQFPN (7x7)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.3000","priceTiers":[{"qty":1,"price":"$6.30000","currency":"USD"},{"qty":10,"price":"$5.69300","currency":"USD"},{"qty":25,"price":"$5.42880","currency":"USD"},{"qty":80,"price":"$4.71363","currency":"USD"},{"qty":230,"price":"$4.50178","currency":"USD"},{"qty":440,"price":"$4.10459","currency":"USD"},{"qty":1560,"price":"$3.57496","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/88082d99dc99f94106e4989f731259ef.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32G431CBU3/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between STM32G431CBU3 and STM32G431CBU6?","answer":"The STM32G431CBU3 and STM32G431CBU6 share the same core, memory, and package footprint; the suffix difference typically indicates a variant in temperature range or packaging option. Without the BU6 datasheet in hand, the safest move is to verify the specific ordering code against your BOM requirements — the base part number STM32G431 is common to both."},{"question":"Does STM32G431CBU3 have USB connectivity?","answer":"No, the connectivity list includes CANbus, I²C, IrDA, LINbus, SPI, and UART/USART, but USB is not among them. If USB is needed, look at the STM32G4 series parts with a 'U' in the ordering code."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32G431CBU3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32G431CBU3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}