# STM32C031 Compact Dev Board ## Description Compact STM32C031C6 development board with USB-C power, onboard CMSIS-DAP SWD debugging, 3.3 V regulation, and dual 2.54 mm GPIO breakout headers. ## Project Details - **Owner:** j001 - **Created:** 8/9/2026 - **Last Updated:** 8/9/2026 - **Visibility:** Public ## Key Components ### D1 — [USBLC6-2SC6](https://www.flux.ai/vasy_skral/usblc6-2sc6~g1b.md) - Part Type: Protection - Functional Group: USB / Protection - Symbol Style: parametric-v1 - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.st.com/content/ccc/resource/technical/document/datasheet/06/1d/48/9c/6c/20/4a/b2/CD00050750.pdf/files/CD00050750.pdf/jcr:content/translations/en.CD00050750.pdf - Manufacturer Name: STMicroelectronics - LCSC Part Number: C7519 - Manufacturer Part Number: USBLC6-2SC6 **Pins:** - GND [pin 2] - I/O1 [pin 6] - I/O1 [pin 1] - I/O2 [pin 3] - I/O2 [pin 4] - VBUS [pin 5] ### D2 — [SMBJ5.0A-13-F](https://www.flux.ai/lcsc/smbj5p0a-13-f~q28r.md) - Manufacturer Part Number: SMBJ5.0A-13-F - JLCPCB Part Class: Extended Part - LCSC Part Number: C110528 - Part Type: TVS - Manufacturer Name: DIODES(美台) - Functional Group: USB / Protection - Product Info Url: https://lcsc.com/product-detail/TVS_DIODES_SMBJ5-0A-13-F_SMBJ5-0A-13-F_C110528.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Diodes-Incorporated-SMBJ5-0A-13-F_C110528.pdf - Package or Case Code: SMB_L4.6-W3.6-LS5.3-RD **Pins:** - A [pin 2] - C [pin 1] ### F1 — [1206L050/15YR](https://www.flux.ai/jecstronic/1206l05015yr~ad2.md) - Functional Group: USB / Protection - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.littelfuse.com/media?resourcetype=datasheets&itemid=2b6a1515-d4ee-4c83-8bd4-152b4901b8f5&filename=littelfuse_ptc_1206l_datasheet.pdf - Manufacturer Name: Littelfuse Inc. - Manufacturer Part Number: 1206L050/15YR - Part Type: Fuse **Pins:** - P1 [pin 1] - P2 [pin 2] ### J1 — [USB4105-GF-A](https://www.flux.ai/adrian95/usb4105-gf-a~im9.md) - Manufacturer Name: GCT - Symbol Style: parametric-v1 - Manufacturer Part Number: USB4105-GF-A - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/c2c7fba82d64960d510c5688ccda39e92973a3ef64f0758ccd8dce8a07cbda76.pdf - Part Type: USB C - License: https://creativecommons.org/licenses/by/4.0/ - Functional Group: USB / Protection - Manufacturer Name: GCT **Pins:** - CC1 [pin A5] - CC2 [pin B5] - DN1 [pin A7] - DN2 [pin B7] - DP1 [pin A6] - DP2 [pin B6] - GND [pin A1_B12] - GND__1 [pin B1_A12] - SBU1 [pin A8] - SBU2 [pin B8] - SHELL_GND [pin SH1] - SHELL_GND__1 [pin SH2] - SHELL_GND__2 [pin SH3] - SHELL_GND__3 [pin SH4] - VBUS [pin A4_B9] - VBUS__1 [pin B4_A9] ### J2 — [Pin Header 01x05 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-01x05-254mm-vertical~cas.md) - Part Type: Connector - Functional Group: Expansion Headers - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] ### J3 — [Pin Header 01x16 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-01x16-254mm-vertical~9zm.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Functional Group: Expansion Headers **Pins:** - Pin_1 [pin 1] - Pin_10 [pin 10] - Pin_11 [pin 11] - Pin_12 [pin 12] - Pin_13 [pin 13] - Pin_14 [pin 14] - Pin_15 [pin 15] - Pin_16 [pin 16] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] - Pin_9 [pin 9] ### J4 — [Pin Header 01x16 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-01x16-254mm-vertical~9zm.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Functional Group: Expansion Headers **Pins:** - Pin_1 [pin 1] - Pin_10 [pin 10] - Pin_11 [pin 11] - Pin_12 [pin 12] - Pin_13 [pin 13] - Pin_14 [pin 14] - Pin_15 [pin 15] - Pin_16 [pin 16] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] - Pin_9 [pin 9] ### J5 — [Pin Header 01x12 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-01x12-254mm-vertical~yy0.md) - Functional Group: Expansion Headers - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_10 [pin 10] - Pin_11 [pin 11] - Pin_12 [pin 12] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] - Pin_9 [pin 9] ### J6 — [Pin Header 01x12 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-01x12-254mm-vertical~yy0.md) - License: https://creativecommons.org/licenses/by/4.0/ - Functional Group: Expansion Headers - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_10 [pin 10] - Pin_11 [pin 11] - Pin_12 [pin 12] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] - Pin_9 [pin 9] ### LED1 — [150060VS55040](https://www.flux.ai/adrian95/150060vs55040~c2q.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Würth Elektronik - Functional Group: 3.3 V Power - Datasheet URL: https://www.we-online.com/components/products/datasheet/150060VS55040.pdf - Manufacturer Part Number: 150060VS55040 - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### LED2 — [APG1608ZGCK](https://www.flux.ai/adrian95/apg1608zgck~r8.md) - Part Type: LED - Manufacturer Part Number: APG1608ZGCK - Datasheet URL: https://www.kingbrightusa.com/images/catalog/SPEC/APG1608ZGCK.pdf - Functional Group: Debugger MCU - Manufacturer Name: Kingbright - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - A [pin 2] - K [pin 1] ### LED3 — [150060BS75020](https://www.flux.ai/adrian95/150060bs75020~jcq.md) - Manufacturer Name: Würth Elektronik - Functional Group: Target MCU / Support - Manufacturer Part Number: 150060BS75020 - Datasheet URL: https://www.we-online.com/components/products/datasheet/150060BS75020.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: LED **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW1 — [JS102011JCQN](https://www.flux.ai/adrian95/js102011jcqn~oia.md) - Part Type: Switch - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: C&K - Datasheet URL: https://www.ckswitches.com/media/1422/js.pdf - Functional Group: 3.3 V Power - Manufacturer Part Number: JS102011JCQN **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### SW2 — [B3U-1000P](https://www.flux.ai/adrian95/b3u-1000p~kb2.md) - Part Type: Switch - Manufacturer Part Number: B3U-1000P - Functional Group: Target MCU / Support - Datasheet URL: https://omronfs.omron.com/en_US/ecb/products/pdf/en-b3u.pdf - Manufacturer Name: Omron Electronics Inc-EMC Div - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW3 — [B3U-1000P](https://www.flux.ai/adrian95/b3u-1000p~kb2.md) - License: https://creativecommons.org/licenses/by/4.0/ - Functional Group: Target MCU / Support - Manufacturer Name: Omron Electronics Inc-EMC Div - Datasheet URL: https://omronfs.omron.com/en_US/ecb/products/pdf/en-b3u.pdf - Manufacturer Part Number: B3U-1000P - Part Type: Switch **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW4 — [B3U-1000P](https://www.flux.ai/adrian95/b3u-1000p~kb2.md) - Manufacturer Name: Omron Electronics Inc-EMC Div - Functional Group: Target MCU / Support - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Switch - Manufacturer Part Number: B3U-1000P - Datasheet URL: https://omronfs.omron.com/en_US/ecb/products/pdf/en-b3u.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] ### U1 — [STM32C031C_4-6_Tx](https://www.flux.ai/kicad-part-library/stm32c031c4-6tx~bvd.md) - Manufacturer Name: STMicroelectronics NV - Manufacturer Part Number: STM32C031C_4-6_Tx - Functional Group: Target MCU / Support - Package or Case Code: LQFP-48_7x7mm_P0.5mm - Datasheet URL: https://www.st.com/resource/en/datasheet/stm32c031c4.pdf **Pins:** - PA0 [pin 11] - PA1 [pin 12] - PA10/NC [pin 32] - PA11/PA9 [pin 33] - PA12/PA10 [pin 34] - PA13 [pin 35] - PA14 [pin 36] - PA15 [pin 37] - PA2 [pin 13] - PA3 [pin 14] - PA4 [pin 15] - PA5 [pin 16] - PA6 [pin 17] - PA7 [pin 18] - PA8 [pin 28] - PA9/NC [pin 29] - PB0 [pin 19] - PB1 [pin 20] - PB10 [pin 22] - PB11 [pin 23] - PB12 [pin 24] - PB13 [pin 25] - PB14 [pin 26] - PB15 [pin 27] - PB2 [pin 21] - PB3 [pin 42] - PB4 [pin 43] - PB5 [pin 44] - PB6 [pin 45] - PB7 [pin 46] - PB8 [pin 47] - PB9 [pin 48] - PC13 [pin 1] - PC14 [pin 2] - PC15 [pin 3] - PC6 [pin 30] - PC7 [pin 31] - PD0 [pin 38] - PD1 [pin 39] - PD2 [pin 40] - PD3 [pin 41] - PF0 [pin 8] - PF1 [pin 9] - PF2 [pin 10] - PF3 [pin 4] - VDD [pin 6] - VREF+ [pin 5] - VSS [pin 7] ### U2 — [STM32F072CBT6](https://www.flux.ai/vasy_skral/stm32f072cbt6~2vc.md) - Datasheet URL: http://www.st.com/content/ccc/resource/technical/document/datasheet/cd/46/43/83/22/d3/40/c8/DM00090510.pdf/files/DM00090510.pdf/jcr:content/translations/en.DM00090510.pdf - Manufacturer Name: STMicroelectronics - Functional Group: Debugger MCU - Manufacturer Part Number: STM32F072CBT6 - Part Type: Microcontroller **Pins:** - BOOT0 [pin 44] - NRST [pin 7] - PA0 [pin 10] - PA1 [pin 11] - PA10 [pin 31] - PA11 [pin 32] - PA12 [pin 33] - PA13 [pin 34] - PA14 [pin 37] - PA15 [pin 38] - PA2 [pin 12] - PA3 [pin 13] - PA4 [pin 14] - PA5 [pin 15] - PA6 [pin 16] - PA7 [pin 17] - PA8 [pin 29] - PA9 [pin 30] - PB0 [pin 18] - PB1 [pin 19] - PB10 [pin 21] - PB11 [pin 22] - PB12 [pin 25] - PB13 [pin 26] - PB14 [pin 27] - PB15 [pin 28] - PB2 [pin 20] - PB3 [pin 39] - PB4 [pin 40] - PB5 [pin 41] - PB6 [pin 42] - PB7 [pin 43] - PB8 [pin 45] - PB9 [pin 46] - PC13 [pin 2] - PC14 [pin 3] - PC15 [pin 4] - PF0 [pin 5] - PF1 [pin 6] - VBAT [pin 1] - VDD [pin 48] - VDD [pin 24] - VDDA [pin 9] - VDDIO2 [pin 36] - VSS [pin 23] - VSS [pin 47] - VSS [pin 35] - VSSA [pin 8] ### U3 — [TLV75533PDBVR](https://www.flux.ai/lcsc/tlv75533pdbvr~gnuj.md) - Package or Case Code: SOT-23-5_L3.0-W1.7-P0.95-LS2.8-BR - Symbol Style: parametric-v1 - Manufacturer Part Number: TLV75533PDBVR - Part Type: Linear Voltage Regulators (LDO) - JLCPCB Part Class: Extended Part - LCSC Part Number: C404027 - Functional Group: 3.3 V Power - Manufacturer Name: TI(德州仪器) - Product Info Url: https://lcsc.com/product-detail/Low-Dropout-Regulators-LDO_Texas-Instruments-TI-TLV75533PDBVR_C404027.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1912111437_Texas-Instruments-TLV75533PDBVR_C404027.pdf **Pins:** - EN [pin 3] - GND [pin 2] - IN [pin 1] - NC [pin 4] - OUT [pin 5] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/j001/stm32c031-compact-dev-board~r3](https://www.flux.ai/j001/stm32c031-compact-dev-board~r3).* --- *Generated from [https://www.flux.ai/j001/stm32c031-compact-dev-board~r3](https://www.flux.ai/j001/stm32c031-compact-dev-board~r3)*