2 layers31 × 11 mm
Kb db
melonbred/kb-daughterboard
This project is a USB-C daughterboard that provides with ESD protection and a standard 4-pin JST connector. Dimensions are approximately 42 x 11mm and has two M2 screw mounts.
10 parts1MIT
2 layers31 × 24 mm
Kb db protruded panel
melonbred/kb-daughterboard1This project is a USB-C daughterboard that provides with ESD protection and a standard 4-pin JST connector. Dimensions are approximately 42 x 11mm and has two M2 screw mounts.
- Size
- 31 × 24 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 24
- Nets
- 11
- Pads
- 100
- Tracks, vias
- 240, 20
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 26 Apr 2021
- Updated
- 29 Mar 2022
Overview
Kb db protruded panel is an open-source printed circuit board by melonbred, from the melonbred/kb-daughterboard repository on GitHub, published under the MIT licence. It is a 2-layer board of 31 × 24 mm with 24 parts on 11 nets, routed with 240 tracks and 20 vias.
It is built around the PRTR5V0U2X. Its parts include 6 resistors, 2 capacitors, 2 diodes, 2 connectors and 2 fuses.
Main components
1README
README.mdkb-daughterboard
Introduction
This project is a USB-C daughterboard that provides with ESD protection and a standard 4-pin JST connector. Dimensions are approximately 42 x 11mm and has two M2 screw mounts. This daughterboard was heavily influenced by the C3 Unified Daughterboard project. While the C3 Unified Daughterboard is a great product, this daughterboard offers a different footprint and vertical JST connector.
Features
Similarly to the Unified Daugherboard, this daughterboard features the following:
- Overcurrent protection through a PTC fuse
- Overvoltage protection through a TVS diode
- Single-path USB-C shield grounding to a metal chasis. ESD is disappited through a resistor and diode.
Please note that this daughterboard does not include resistors for the USB data lines which may be required for some microprocessors. If these resistors are required for your application, please provide them on the PCB mainboard.
There are also two versions of this daughterboard. One with the USB-C receptacle flush to the PCB; The other with the USB-C receptacle protruded out. Please see the .step files for reference.
Production
Please note that the produection files were prepared with JLCPCB's SMT assembly in mind. Should you deicide to proceed with a different manufacturer, the Bill of Materials (BOM) and position files may need to be modified.
Acknowledgment
This project was collaboration with matthewdias.
As mentioned above, this project was heavily influenced by the C3 Unified Daughterboard.
Parts
24| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 5.1k | Resistor_SMD:R_0805_2012Metric | R1, R1, R2, R2 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_2.2mm_M2_DIN965_Pad | H1, H1, H2, H2 |
| 2 | 1M | Resistor_SMD:R_0805_2012Metric | R5, R5 |
| 2 | 4.7n | Capacitor_SMD:C_0805_2012Metric | C1, C1 |
| 2 | 500mA | Fuse:Fuse_0805_2012Metric | F1, F1 |
| 2 | Conn_01x04 | Connector_JST:JST_SH_BM04B-SRSS-TB_1x04-1MP_P1.00mm_Vertical | J1, J1 |
| 2 | HRO-TYPE-C-31-M-12 | Type-C:HRO-TYPE-C-31-M-12-Assembly | USB1, USB1 |
| 2 | PRTR5V0U2X | Package_TO_SOT_SMD:SOT-143 | D1, D1 |
The 20 most common of 24 parts.
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Questions
How big is the Kb db protruded panel PCB?
It measures 31 × 24 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Kb db protruded panel use?
24 parts, built around the PRTR5V0U2X. 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 Kb db protruded panel KiCad files?
From the melonbred/kb-daughterboard repository on GitHub, at the commit this page was made from: the board is protruded/kicad/kb-db_protruded_panel.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Kb db protruded panel 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).