2 layers388 × 126.1 mm
2 layers282.6 × 92 mm
Chavdai40
dvorak55/chavdai406Challenge to Handle Acoustic-noise, Verify Drastic Abductive Implementation.
- Size
- 282.6 × 92 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 109
- Nets
- 79
- Pads
- 423
- Tracks, vias
- 817, 34
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 2 May 2020
- Updated
- 13 Aug 2026
Overview
Chavdai40 is an open-source printed circuit board by dvorak55, from the dvorak55/chavdai40 repository on GitHub, published under the MIT licence. It is a 2-layer board of 282.6 × 92 mm with 109 parts on 79 nets, routed with 817 tracks and 34 vias.
It is built around the STM32F042K6T6, XC6206P332MR and ESDAXLC6-1BT2, with the TS-1187A-B-A-B and NSMD025 among its other parts. Its parts include 44 diodes, 6 capacitors, 3 resistors, 2 ICs and 2 connectors. It belongs with the STM32 boards of this library.
Main components
5
STM32F042K6T6
LQFP-32(7x7)-40℃~+85℃ 1.65V~3.6V 12bit 26 32 Bit 32KB 48MHz 6KB ARM Cortex-M0 Built-in FLASH LQFP-32(7x7) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
XC6206P332MR
SOT-23-40℃~+85℃@(Ta) 1 1uA 200mA 3.3V 6V Fixed Over Current Protection Positive SOT-23-3L Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTorex SemiconductorVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
ESDAXLC6-1BT2
SOD-882T-40℃~+150℃ 0.4pF 1 1.3A@8/20us 17V 3V 40W@8/20us 6V 70nA Bidirectional IEC 61000-4-2 TVS SOD-882T ESD and Surge Protection (TVS/ESD) ROHSSTMicroelectronicsESD And Surge Protection (TVS/ESD)
TS-1187A-B-A-B
SMD-4P,5.1x5.1mm-30℃~+85℃ 1.5mm 1.6N 100,000 cycles 12V 5.1mm 5.1mm 50mA Gold No Round Button SPST Surface Mount,Vertical Without Bracket SMD-4P,5.1x5.1mm Tactile Switches ROHSXKB ConnectionTactile Switches
NSMD025
1206-40℃~+85℃ 100A 16V 2.5Ω 250mA 350mΩ 500mA 600mW 80ms 1206 Resettable Fuses ROHS台湾陆海Resettable Fuses
README
README.mdChavdai40% Socketをご購入の方はこちら↓
https://github.com/dvorak55/chavdai40socket
2020年、2023年発売のChavdai40%をご購入の方で、以前のサポートページをご覧になりたい方はこちら↓
Parts
109| Qty | Value | Footprint | References |
|---|---|---|---|
| 44 | SOD-123 | Diode_SMD:D_SOD-123 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +28 |
| 30 | MX-NoLED | MX_Only:MXOnly-1U-NoLED | MX2, MX10, MX11, MX12, MX15, MX16, MX17, MX18, MX19, MX20, MX21, MX22, MX23, MX24, MX27, MX28 +14 |
| 7 | MX-NoLED | MX_Only:MXOnly-1.25U-NoLED | MX36, MX37, MX38, MX39, MX43, MX44, MX45 |
| 4 | 100nF | Capacitor_SMD:C_0402_1005Metric | C1, C2, C3, C4 |
| 2 | 1uF | Capacitor_SMD:C_0603_1608Metric | C5, C6 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R2, R3 |
| 2 | ESDAXLC6-1BT2 | Diode_SMD:D_0402_1005Metric | ESD1, ESD2 |
| 2 | MX-NoLED | MX_Only:MXOnly-1.5U-NoLED | MX1, MX13 |
| 2 | MX-NoLED | MX_Only:MXOnly-2.25U-ReversedStabilizers-NoLED | MX26, MX40 |
| 2 | TS-1187A-B-A-B | random-keyboard-parts:SKQGADE010 | SW_BOOT1, SW_RESET1 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | Chavdai40% | Type-C:logo2-small | logo1 |
| 1 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J2 |
| 1 | HRO-TYPE-C-31-M-12 | Type-C:HRO-TYPE-C-31-M-12-HandSoldering | USB1 |
| 1 | MX-NoLED | MX_Only:MXOnly-1.75U-NoLED | MX14 |
| 1 | MX-NoLED | MX_Only:MXOnly-6.25U-ReversedStabilizers-NoLED | MX42 |
| 1 | MX-NoLED | MX_Only:MXOnly-2.25U-NoLED | MX25 |
| 1 | MX-NoLED | MX_Only:MXOnly-2.75U-ReversedStabilizers-NoLED | MX41 |
| 1 | STM32F042K6T6 | Package_QFP:LQFP-32_7x7mm_P0.8mm | U1 |
| 1 | XC6206P332MR | Package_TO_SOT_SMD:TSOT-23 | U2 |
| 1 | nSMD025 | Fuse:Fuse_1206_3216Metric | F1 |
Questions
How big is the Chavdai40 PCB?
It measures 282.6 × 92 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Chavdai40 use?
109 parts, built around the STM32F042K6T6, XC6206P332MR, ESDAXLC6-1BT2 and TS-1187A-B-A-B. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Chavdai40 KiCad files?
From the dvorak55/chavdai40 repository on GitHub, at the commit this page was made from: the board is chavdai40.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Chavdai40 design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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