2 layers145 × 165 mm
2 layers18.4 × 20.3 mm
CP2102N bb
WRansohoff/CP2102N_simple9Simple breakout board for a CP2102N USB / UART bridge.
- Size
- 18.4 × 20.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 18
- Nets
- 25
- Pads
- 81
- Tracks, vias
- 184, 24
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 26 Oct 2019
- Updated
- 26 Oct 2019
Overview
CP2102N bb is an open-source printed circuit board by WRansohoff, from the WRansohoff/CP2102N_simple repository on GitHub, published under the MIT licence. It is a 2-layer board of 18.4 × 20.3 mm with 18 parts on 25 nets, routed with 184 tracks and 24 vias.
It is built around the CP2102N-EK and SP0503BAHTG. Its parts include 5 resistors, 4 capacitors, 4 connectors, 3 diodes and 1 IC. It belongs with the interfaces and adapters boards of this library.
Main components
2CP2102N-EK
-- USB Conversion Modules ROHSSilicon LabsUSB Conversion Modules
SP0503BAHTG
SOT-143-55℃~+125℃ 10A@8/20us 14V 150W@8/20us 30pF、60pF 5.5V 6V 80nA ESD IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 Three channels Unidirectional SOT-143 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
README
README.mdCP2102N USB <-> UART Board
This is a simple reference implementation of a board using the CP2102N USB / Serial bridge. It has a micro-USB connector on one side, and TX / RX / 3.3V / Ground pins on the other.
The other USART signals provided by the CP2102N are also broken out on two rows of headers along the side of the board. I haven't tested them because I don't usually use those signals, but it seemed like a good idea to make them available.
Current Status
This is the second revision of a design that I've had some success with. I've only tested the TX / RX signals, but those seem to work fine.
I'm still waiting to receive boards with this actual design, though, so you should still think of this board as untested for now.
Schematic and Board Renders
Parts
18| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 1K | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R3, R4, R5 |
| 2 | 100n | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C2, C3 |
| 2 | 4u7 | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C1, C4 |
| 2 | Other | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J3, J4 |
| 1 | 22.1K | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1 |
| 1 | 47.5K | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R2 |
| 1 | CP2102N | CP2102N_bb:QFN-24-1EP_4x4mm_HandSolder | U1 |
| 1 | LOGO | CP2102N_bb:oshw_logo | G*** |
| 1 | RX | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2 |
| 1 | SP0503BAHT | Package_TO_SOT_SMD:SOT-143 | D1 |
| 1 | TX | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D3 |
| 1 | UART | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Horizontal | J2 |
| 1 | USB_B_Micro | CP2102N_bb:MyMicroUSB | J1 |
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Questions
How big is the CP2102N bb PCB?
It measures 18.4 × 20.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the CP2102N bb use?
18 parts, built around the CP2102N-EK and SP0503BAHTG. 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 CP2102N bb KiCad files?
From the WRansohoff/CP2102N_simple repository on GitHub, at the commit this page was made from: the board is CP2102N_bb.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the CP2102N bb 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).