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USB-C-3-way splitter

bluepylons·USB-C-3-way-splitter·V5/USB-C-3-way-splitter-V5.kicad_pcb

USB-C-3-way splitter PCB layout, top view — open source board by bluepylons
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About the USB-C-3-way splitter PCB

USB-C-3-way splitter is an open source PCB design by bluepylons, published on GitHub under the MIT license. It is a 2-layer board measuring 29 × 27 mm, with 31 components from 21 distinct parts.

Other key parts include the C93119, C893386 and C7420376. By type, the board carries 9 resistors, 6 diodes, 4 connectors, 4 capacitors, 3 ICs and 1 transistor.

It belongs with the power & battery designs in this gallery, and the repository also holds 2 earlier revisions of it.

From the project

A splitter board (for making a cable splitter) for turning a 5V 3A USB power source to 3 5V 1A USB sources

Disclaimer - Build and/or use this at your own risk. I am not responsible for anything that arises from use of these files or documents, or for anything that arises from constructing and/or using this device.

Disclaimer 2 - the USB battery charging standard actually provides for a maximum of 1.5A, not 1A as originally believed. The polyfuse used (Littelfuse 1812L300MR) does not reliably trip below 5A, so this splitter may result in 4.5A maximum being drawn from the source. A planned Version 4 (which uses an 3A electronic fuse in place of the high-side switch to reliabily cut off current at…

USB-C-3-way splitter, from the project README
From the project README

Main components on the USB-C-3-way splitter

C93119C893386C7420376

USB-C-3-way splitter bill of materials (BOM)

31 components, 21 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
C93119
LM393
U1
1
C893386
~
U2
1
C7420376
SRV05-4
U3
1
C8545
2N7002
Q1
1
C165948
USB_C_Receptacle_USB2.0
J1
3
Conn_01x04
J2, J3, J4
1
C127824
1812L300MR
Shenzhen JDT Fuse
F1
3
MountingHole
H5, H6, H7
1
C5267733
D_Zener
D1
1
C34499
LED
D2
1
C2297
LED
D3
2
C81598
1N4148W
D4, D5
1
C502546
D_Zener
D6
1
C28323
1uF
C1
2
C12891
22uF
C2, C3
1
C49678
100nF
C5
2
C27834
5.1k
R1, R2
1
C17673
4.7k
R3
2
C17710
470
R4, R5
3
C17513
1K
R6, R8, R9
Show 1 more
QtyPartRefs
1
C4328
20k
R7

USB-C-3-way splitter design files

The KiCad project lives in the bluepylons/USB-C-3-way-splitter repository on GitHub; these links point at the commit this page was built from.

USB-C-3-way splitter: common questions

How big is the USB-C-3-way splitter PCB?

The USB-C-3-way splitter measures 29 × 27 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the USB-C-3-way splitter?

31 components, from 21 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the USB-C-3-way splitter design files?

From the bluepylons/USB-C-3-way-splitter repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the USB-C-3-way splitter design in my own project?

Yes, under the terms of its MIT license, which bluepylons chose for the repository.

Earlier revisions in the repo: USB-C-3-way-splitter-V4, USB-C-3-way-splitter

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