USB-hub project
About the USB-hub project PCB
USB-hub project is an open source PCB design by Qeps, published on GitHub under the MIT license. It is a 4-layer board measuring 75.4 × 134.4 mm, with 102 components from 22 distinct parts.
Other key parts include the SRV05-4. By type, the board carries 42 capacitors, 16 resistors, 12 inductors, 11 connectors, 6 ICs and 2 crystals.
It belongs with the usb & debug tools designs in this gallery.
From the project
KiCAD USB hub design
Base Project (CircuitDigest) - Uses the GL850G USB 2.0 hub controller - Expands one USB port into four downstream ports - Powered directly from 5 V USB input - The controller integrates internal 3.3 V and 1.8 V regulators, no external LDO required - Basic passive components: resistors and decoupling capacitors - USB-A connectors for downstream ports and one upstream connector - Includes ESD protection (TVS diodes) for both upstream and downstream ports
Main components on the USB-hub project
USB-hub project bill of materials (BOM)
102 components, 22 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 6 | SRV05-4 | TSOT-23-6_HandSoldering | U1, U2, U3, U4, U5, U6 |
| 1 | PBSS4032NT | SOT-23 | Q1 |
| 2 | Crystal | Crystal_SMD_ECS_CSM3X-2Pin_7.6x4.1mm | Y1, Y2 |
| 10 | USB_A | USB_A_TE_292303-7_Horizontal | J1, J2, J3, J4, J5, J7, J8, J9 +2 |
| 1 | Barrel_Jack_Switch | PJ-102AH | J6 |
| 2 | LED | D_0805_2012Metric_Pad1.15x1.40mm_HandSolder | CHIPLED_1, CHIPLED_2 |
| 2 | GL850G | SSOP28_GL850G_GEN-L | GL850G1, GL850G2 |
| 8 | Thermistor_NTC | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | TH1, TH2, TH3, TH4, TH5, TH6, TH7, TH8 |
| 12 | L | L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L1, L2, L3, L4, L5, L6, L7, L8 +4 |
| 25 | 0.1uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C3, C4, C9, C12, C14, C16 +17 |
| 9 | 100uF | C_Radial_D6.3mm_H11.0mm_P2.50mm | C5, C6, C7, C8, C13, C27, C28, C29 +1 |
| 4 | 33pF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C10, C11, C32, C33 |
| 2 | 10uF | C_Radial_D6.3mm_H11.0mm_P2.50mm | C15, C38 |
| 2 | 1uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C19, C39 |
| 4 | 10k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R5, R10, R14 |
| 2 | 47k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R11 |
| 2 | 100k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3, R12 |
| 2 | 470R | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4, R13 |
| 2 | 20k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6, R15 |
| 2 | 680R | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7, R16 |
Show 2 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 470k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R8 |
| 1 | 4.7k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R9 |
USB-hub project design files
The KiCad project lives in the Qeps/USB-hub-project repository on GitHub; these links point at the commit this page was built from.
- LayoutProjektUSBHUB.kicad_pcb
- SchematicProjektUSBHUB.kicad_sch
USB-hub project: common questions
How big is the USB-hub project PCB?
The USB-hub project measures 75.4 × 134.4 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the USB-hub project?
102 components, from 22 distinct parts. The full bill of materials is listed on this page.
Where can I download the USB-hub project design files?
From the Qeps/USB-hub-project repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the USB-hub project design in my own project?
Yes, under the terms of its MIT license, which Qeps chose for the repository.
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