6 layers148 × 121 mm
2 layers56 × 22 mm
Grits
GHF/gritsBreakfast Corntroller
- Size
- 56 × 22 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 64
- Nets
- 51
- Pads
- 288
- Tracks, vias
- 468, 226
- Pours
- 13
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 16 Jan 2024
- Updated
- 16 Jan 2024
Overview
Grits is an open-source printed circuit board by GHF, from the GHF/grits repository on GitHub. It is a 2-layer board of 56 × 22 mm with 64 parts on 51 nets, routed with 468 tracks and 226 vias.
It is built around the STSPIN32F0B, BUK7M9R9-60EX and FTSH-105-01-F-DV, with the SMAJ33A among its other parts. Its parts include 26 resistors, 15 capacitors, 6 transistors, 6 connectors and 5 diodes.
Main components
4
STSPIN32F0B
VFQFPN-48(7x7)-40℃~+125℃@(TJ) 20 32KB 4KB 6.7V~45V ARM Cortex-M0 FLASH VFQFPN-48(7x7) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
BUK7M9R9-60EX
LFPAK33-8-55℃~+175℃ 1 N-channel 10.4nC@10V 174pF 2.007nF 241pF 4V 60A 60V 79W 9.9mΩ@10V N-Channel ±20V LFPAK33-8 MOSFETs ROHSNexperiaMOSFETs
FTSH-105-01-F-DV
SMD,P=1.27mm-55℃~+125℃ 1.27mm 1.27mm 10P 2 2x5P 3.05mm 3.4A Black Phosphor bronze Pin Header Surface Mount,Vertical Tin SMD,P=1.27mm Pin Headers ROHSSamtecPin Headers
SMAJ33A
SMA-65℃~+150℃ 1uA 33V 40.6V 400W@10/1000us 53.3V 7.5A@10/1000us TVS SMA ESD and Surge Protection (TVS/ESD) ROHSShandong Jingdao MicroelectronicsESD And Surge Protection (TVS/ESD)
Parts
64| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 100nF 50V X7R | Capacitor_SMD:C_0603_1608Metric | C3, C4, C5, C6, C10, C12, C13, C14, C15 |
| 6 | 5.1Ω | Resistor_SMD:R_0603_1608Metric | R2, R4, R9, R10, R15, R16 |
| 6 | BUK7M9R9-60E | Package_TO_SOT_SMD:LFPAK33 | Q1, Q2, Q3, Q4, Q5, Q6 |
| 4 | 20kΩ 1% | Resistor_SMD:R_0603_1608Metric | R11, R12, R13, R14 |
| 4 | 220kΩ 1% | Resistor_SMD:R_0603_1608Metric | R5, R6, R7, R8 |
| 3 | 22Ω | Resistor_SMD:R_0603_1608Metric | R24, R25, R26 |
| 3 | 3.3kΩ | Resistor_SMD:R_0603_1608Metric | R3, R21, R22 |
| 3 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP1, TP2, TP3 |
| 2 | 10µF 50V | Capacitor_SMD:C_1206_3216Metric | C7, C9 |
| 2 | Conn_01x04_MountingPin | Connector_JST:JST_GH_SM04B-GHS-TB_1x04-1MP_P1.25mm_Horizontal | J4, J5 |
| 1 | 1.5kΩ | Resistor_SMD:R_0603_1608Metric | R23 |
| 1 | 10kΩ 0.5% | Resistor_SMD:R_0603_1608Metric | R20 |
| 1 | 10mΩ 1W | Resistor_SMD:R_1206_3216Metric | R18 |
| 1 | 150kΩ 0.5% | Resistor_SMD:R_0603_1608Metric | R19 |
| 1 | 1nF | Capacitor_SMD:C_0603_1608Metric | C8 |
| 1 | 2.2µF 16V | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | 220µF 35V | Capacitor_SMD:CP_Elec_8x10.5 | C2 |
| 1 | 22kΩ | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 22µH | Inductor_SMD:L_1008_2520Metric | L1 |
| 1 | 47µF 6.3V | Capacitor_SMD:C_0805_2012Metric | C11 |
| 1 | Conn_01x03 | Connector_Molex:Molex_Micro-Fit_3.0_43650-0300_1x03_P3.00mm_Horizontal | J2 |
| 1 | Conn_01x06_MountingPin | Connector_JST:JST_GH_BM06B-GHS-TBT_1x06-1MP_P1.25mm_Vertical | J6 |
| 1 | Conn_02x01 | Connector_Molex:Molex_Micro-Fit_3.0_43045-0200_2x01_P3.00mm_Horizontal | J1 |
| 1 | FTSH-105-01-F-DV | Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical_SMD | J3 |
| 1 | Ferrite_Bead | Inductor_SMD:L_0603_1608Metric | FB1 |
| 1 | GREEN 绿 | LED_SMD:LED_0805_2012Metric | D3 |
| 1 | PMEG6010CEJ,115 DB2J50100L | Diode_SMD:D_SOD-323F | D2 |
| 1 | RED 红 | LED_SMD:LED_0805_2012Metric | D4 |
| 1 | SMAJ33A | Diode_SMD:D_SMA | D1 |
| 1 | STSPIN32F0B | Package_DFN_QFN-hackshack:VQFN-48-1EP_7x7mm_P0.5mm_EP2.8x2.8mm | U1 |
| 1 | YELLOW 黄 | LED_SMD:LED_0805_2012Metric | D5 |
| 1 | no pop | Resistor_SMD:R_0603_1608Metric | R17 |
Questions
How big is the Grits PCB?
It measures 56 × 22 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Grits use?
64 parts, built around the STSPIN32F0B, BUK7M9R9-60EX, FTSH-105-01-F-DV and SMAJ33A. 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 Grits KiCad files?
From the GHF/grits repository on GitHub, at the commit this page was made from: the board is Grits.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Grits design in my own project?
Its repository states no licence, so its author keeps all rights: ask GHF before reusing the design.
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