4 layers95 × 55.5 mm
EinkPDA keyboard
TalismanDesign/PocketMage_PDA
An E-Ink PDA device using the ESP32 S3.
137 parts2kApache-2.0
2 layers36.3 × 19.3 mm
Sbsw
wzhd/usbsafeKicad project of a usb cable adapter with current-limiting
- Size
- 36.3 × 19.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 21
- Nets
- 17
- Pads
- 72
- Tracks, vias
- 324, 42
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 10 Apr 2024
- Updated
- 10 Apr 2024
Overview
Sbsw is an open-source printed circuit board by wzhd, from the wzhd/usbsafe repository on GitHub. It is a 2-layer board of 36.3 × 19.3 mm with 21 parts on 17 nets, routed with 324 tracks and 42 vias.
It is built around the MMBT3904 and U-A-24DS-W-1. Its parts include 7 resistors, 3 capacitors, 3 diodes, 2 transistors and 2 switches.
Main components
2
MMBT3904
SOT-23-55℃~+150℃ 1 NPN 100 100nA 200mA 200mW 300MHz 300mV 40V 6V NPN SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)U-A-24DS-W-1
SMD-40℃~+85℃ 1 1.5A 11.05mm 4P 5,000 cycles Female Laminated board Type-A USB 2.0 SMD USB Connectors ROHSHRO ElectronicsUSB Connectors
Parts
21| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 1uF | Capacitor_SMD:C_0805_2012Metric | C1, C2, C3 |
| 3 | LED | graph:LED_1206_3216Metric | LED1, LED2, LED3 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 2 | MMBT3904 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 2 | SW_Push | Button_Switch_SMD:SW_SPST_TL3342 | SW1, SW2 |
| 1 | 10k | Resistor_SMD:R_1206_3216Metric | R7 |
| 1 | 10k | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 150k | Resistor_SMD:R_1206_3216Metric | R3 |
| 1 | 5k | Resistor_SMD:R_0402_1005Metric | R4 |
| 1 | LOGO | graph:LOGO | G*** |
| 1 | R | Resistor_SMD:R_0402_1005Metric | R5 |
| 1 | TYPE-C 16PIN 2MD(073) | graph:USB-C-SMD_TYPE-C-6PIN-2MD-073 | USB1 |
| 1 | U-A-24DS-W-1 | graph:USB-A | USB2 |
| 1 | ~ | Package_TO_SOT_SMD:SOT-23-6 | U1 |
Questions
How big is the Sbsw PCB?
It measures 36.3 × 19.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Sbsw use?
21 parts, built around the MMBT3904 and U-A-24DS-W-1. 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 Sbsw KiCad files?
From the wzhd/usbsafe repository on GitHub, at the commit this page was made from: the board is sbsw.kicad_pcb and its schematic sbsw.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Sbsw design in my own project?
Its repository states no licence, so its author keeps all rights: ask wzhd before reusing the design.
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