STM32L431KBU3TRAlternatives & Equivalent Parts
About STM32L431KBU3TR
STM32L431KBU3TR is a Integrated Circuit component manufactured by STMicroelectronics. It comes in a Quad Flat No-Lead package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
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Specification Comparison
| Parameter | STM32L431KBU3TRSource | STM32L431KBU6TR | STM32L431KCU6TR | STM32L431KBU3 | STM32L412KBU6TR | STM32L431KBU6 | STM32L431KCU6 | STM32L412K8U6TR |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package Type | Quad Flat No-Lead | Quad Flat No-Lead | Quad Flat No-Lead | Quad Flat No-Lead | Quad Flat No-Lead | Quad Flat No-Lead | Quad Flat No-Lead | Quad Flat No-Lead |
| Pin Count | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 |
| Temperature Range | -40.0°C ~ 125.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 125.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | — | -40.0°C ~ 85.0°C |
| Price | $2.1568 | $1.8537 | $2.1857 | $2.2887 | $1.6678 | $1.7986 | $2.1317 | $1.7600 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE |
| Electrical Parameters | ||||||||
| Factory Lead Time | 12 Weeks | 12 Weeks | 12 Weeks | 12 Weeks | 12 Weeks | 12 Weeks | — | 12 Weeks |
| YTEOL | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| Has ADC | YES | YES | YES | YES | YES | YES | YES | YES |
| Bit Size | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 |
| Boundary Scan | YES | YES | YES | YES | YES | YES | — | YES |
| CPU Family | CORTEX-M4 | CORTEX-M4 | CORTEX-M4 | CORTEX-M4 | CORTEX-M4 | CORTEX-M4 | — | CORTEX-M4 |
| Clock Frequency-Max | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| DAC Channels | YES | YES | YES | YES | NO | YES | — | NO |
| DMA Channels | YES | YES | YES | YES | YES | YES | YES | YES |
| JESD-30 Code | S-XQCC-N32 | S-XQCC-N32 | S-XQCC-N32 | S-PQCC-N32 | S-XQCC-N32 | S-XQCC-N32 | — | S-XQCC-N32 |
| Number of DMA Channels | 14 | 14 | 14 | 14 | 14 | 14 | — | 14 |
| Number of I/O Lines | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
| Number of Timers | 9 | 9 | 9 | 9 | 8 | 9 | — | 8 |
| On Chip Program ROM Width | 8 | 8 | 8 | 8 | 8 | 8 | — | 8 |
| PWM Channels | YES | YES | YES | YES | YES | YES | YES | YES |
| Package Body Material | UNSPECIFIED | UNSPECIFIED | UNSPECIFIED | PLASTIC/EPOXY | UNSPECIFIED | UNSPECIFIED | — | UNSPECIFIED |
| Package Shape | SQUARE | SQUARE | SQUARE | SQUARE | SQUARE | SQUARE | SQUARE | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| RAM (bytes) | 65536 | 65536 | 65536 | 65536 | 40960 | 65536 | — | 40960 |
| ROM (words) | 131072 | 131072 | 262144 | 131072 | 131072 | 131072 | — | 65536 |
| ROM Programmability | FLASH | FLASH | FLASH | FLASH | FLASH | FLASH | — | FLASH |
| Speed | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Supply Voltage-Max | 3.6 V | 3.6 V | 3.6 V | 3.6 V | 3.6 V | 3.6 V | 3.6 V | 3.6 V |
| Supply Voltage-Min | 1.71 V | 1.8 V | 1.8 V | 1.71 V | 1.8 V | 1.8 V | 1.8 V | 3 V |
| Supply Voltage-Nom | 1.8 V | 1.8 V | 1.8 V | 3 V | 1.8 V | 1.8 V | 3 V | 3 V |
| Surface Mount | YES | YES | YES | YES | YES | YES | YES | YES |
| Technology | CMOS | CMOS | CMOS | CMOS | CMOS | CMOS | — | CMOS |
| Temperature Grade | AUTOMOTIVE | INDUSTRIAL | INDUSTRIAL | — | INDUSTRIAL | INDUSTRIAL | — | INDUSTRIAL |
| Terminal Form | NO LEAD | NO LEAD | NO LEAD | NO LEAD | NO LEAD | NO LEAD | NO LEAD | NO LEAD |
| Terminal Pitch | 0.5 mm | 0.5 mm | 0.5 mm | 0.5 mm | 0.5 mm | 0.5 mm | 0.5 mm | 0.5 mm |
| Terminal Position | QUAD | QUAD | QUAD | QUAD | QUAD | QUAD | QUAD | QUAD |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC |
| JESD-609 Code | — | e3 | e3 | — | — | e3 | e3 | e3 |
| Peak Reflow Temperature (Cel) | — | 260 | 260 | NOT SPECIFIED | 260 | 260 | 260 | 260 |
| Terminal Finish | — | Matte Tin (Sn) | Matte Tin (Sn) | — | Tin (Sn) - immersion | Matte Tin (Sn) | Matte Tin (Sn) | Tin (Sn) - immersion |
| Format | — | — | — | FLOATING POINT | FLOATING-POINT | FLOATING POINT | — | FIXED POINT |
| Integrated Cache | — | — | — | YES | YES | YES | — | YES |
| Low Power Mode | — | — | — | YES | YES | YES | — | YES |
| Number of External Interrupts | — | — | — | 16 | 16 | 16 | — | 16 |
| Number of Serial I/Os | — | — | — | 4 | 3 | 4 | — | 3 |
| On Chip Data RAM Width | — | — | — | 8 | 8 | 8 | — | 8 |
| Package Equivalence Code | — | — | — | LCC32,.2SQ,20 | LCC32,.2SQ,20 | LCC32,.2SQ,20 | — | LCC32,.2SQ,20 |
| Supply Current-Max | — | — | — | 10.3 mA | 7.8 mA | 100 mA | — | 100 mA |
| Time@Peak Reflow Temperature-Max (s) | — | — | — | NOT SPECIFIED | — | 30 | — | — |
| Date Of Intro | — | — | — | — | 2018-11-19 | — | — | 2018-11-19 |
| Manufacturer Package Code | — | — | — | — | — | UFQFPN 32 5x5x0.55 | UFQFPN 32 5x5x0.55 | — |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
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Quick Links
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M4 CPU, 80MHz, CMOS, PQCC32
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M4 CPU, 80MHz, CMOS, QCC32
Why Look for Alternatives?
Finding alternatives for STM32L431KBU3TR is essential for supply chain resilience. Component shortages, long lead times, and end-of-life notices can disrupt production schedules. Having verified alternative parts ensures your designs remain manufacturable.
When evaluating STM32L431KBU3TR replacements, consider key parameters such as package compatibility, electrical specifications, and operating temperature range. Our engineering team can help verify pin-to-pin compatibility for your specific application.
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FAQ
What is equivalent to STM32L431KBU3TR?
Known equivalents for STM32L431KBU3TR include STM32L431KBU6TR, STM32L431KCU6TR, STM32L431KBU3. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of STM32L431KBU3TR?
In many cases, yes. Cross-manufacturer alternatives exist for most standard components. However, always verify pin compatibility, electrical specs, and package dimensions before substituting in production.
How do I verify STM32L431KBU3TR alternatives?
Compare the datasheet specifications including pinout, voltage ratings, timing parameters, and package dimensions. FindMyChip's engineering team can help with compatibility verification — submit an RFQ to get started.