2 layers70 × 35 mm
2 layers50 × 23 mm
UEXT-3TO5V Rev A
OLIMEX/UEXT-3TO5V1UEXT to UEXT converter from 3V host to 5V devices
- Size
- 50 × 23 mm
- Copper layers
- 2
- Thickness
- 1.58 mm
- Parts
- 41
- Nets
- 26
- Pads
- 126
- Tracks, vias
- 419, 65
- Pours
- 93
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 4 Jun 2025
- Updated
- 4 Jun 2025
Overview
UEXT-3TO5V Rev A is an open-source printed circuit board by OLIMEX, from the OLIMEX/UEXT-3TO5V repository on GitHub. It is a 2-layer board of 50 × 23 mm with 41 parts on 26 nets, routed with 419 tracks and 65 vias.
Its parts include 10 capacitors, 6 resistors, 4 ICs, 1 diode and 1 inductor.
README
README.mdUEXT-3TO5V
UEXT to UEXT converter from 3V host to 5V devices
https://www.olimex.com/Products/Modules/Adapters/UEXT-3TO5V/open-source-hardware
Licensee
- Hardware is released under CERN Open Hardware Licence Version 2 - Strongly Reciprocal
- Documentation is released under CC BY-SA 4.0
Parts
41| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 100nF/10V/10%/X7R/C0402 | OLIMEX_RLC-FP:C_0402_5MIL_DWS | C1, C2, C3, C4, C5, C6 |
| 4 | 2.2k/R0402 | OLIMEX_RLC-FP:R_0402_5MIL_DWS | R1, R2, R3, R4 |
| 4 | Drill(3.3mm)/Restrict(7.00mm) | OLIMEX_Other-FP:Mounting_Hole_Drill-3.3mm_Clerance-7mm | MH1, MH2, MH3, MH4 |
| 3 | SN74LVC2T45DCUR(VSSOP-8) | OLIMEX_IC-FP:VSSOP-8_Pitch-0.50mm_Pad-0.25mm_Dimensions-2.30x2.00x1.00mm | U1, U2, U3 |
| 2 | 22uF/6.3V/20%/X5R/C0603 | OLIMEX_RLC-FP:C_0603_5MIL_DWS | C8, C9 |
| 2 | BSS138(SOT23-3) | OLIMEX_Transistors-FP:SOT23 | FET1, FET2 |
| 2 | Fiducial | OLIMEX_Other-FP:Fiducial1x3_Paste | FID2, FID4 |
| 2 | Fiducial | OLIMEX_Other-FP:Fiducial1x3 | FID1, FID3 |
| 2 | NA(22uF/6.3V/20%/X5R/C0603) | OLIMEX_RLC-FP:C_0603_5MIL_DWS | C7, C10 |
| 2 | P-B-V-10-LF | OLIMEX_Connectors-FP:GBH-254-SMT-10 | UEXT_3V3, UEXT_5V0 |
| 1 | 1.05k/1%/R0402 | OLIMEX_RLC-FP:R_0402_5MIL_DWS | R6 |
| 1 | 1N5822/SS34/SMA | OLIMEX_Diodes-FP:SMA-KA | D1 |
| 1 | 4.7uH/2.33A/DCR=70mR/20%/CD43(NRS4018T4R7MDGJ) | OLIMEX_RLC-FP:CD42(43) | L1 |
| 1 | 8.25k/1%/R0402 | OLIMEX_RLC-FP:R_0402_5MIL_DWS | R5 |
| 1 | CE_Sign | OLIMEX_Signs-FP:CE_Sign | Sign_CE |
| 1 | Logo_OLIMEX_TB | OLIMEX_Signs-FP:Logo_OLIMEX_TB | Logo_OLIMEX_TB-Top |
| 1 | MT3608(SOT23-6) | OLIMEX_Regulators-FP:SOT23-6 | U4 |
| 1 | Sign_Antistatic | OLIMEX_Signs-FP:Sign_Antistatic | Sign_Antistatic |
| 1 | Sign_OSHW_8x8 | OLIMEX_Signs-FP:Sign_OSHW_8x8 | Sign_OSHW_8x8 |
| 1 | Sign_PB-Free | OLIMEX_Signs-FP:Sign_PB-Free | Sign_PB-Free |
| 1 | Sign_RecycleBin | OLIMEX_Signs-FP:Sign_RecycleBin_1 | Sign_RecycleBin |
| 1 | Sign_RoHS | OLIMEX_Signs-FP:Sign_RoHS_1 | Sign_RoHS |
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Questions
How big is the UEXT-3TO5V Rev A PCB?
It measures 50 × 23 mm and has 2 copper layers, 1.58 mm thick.
What parts does the UEXT-3TO5V Rev A use?
41 parts. 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 UEXT-3TO5V Rev A KiCad files?
From the OLIMEX/UEXT-3TO5V repository on GitHub, at the commit this page was made from: the board is HARDWARE/UEXT-3TO5V-Rev.A/UEXT-3TO5V_Rev_A.kicad_pcb and its schematic HARDWARE/UEXT-3TO5V-Rev.A/UEXT-3TO5V_Rev_A.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the UEXT-3TO5V Rev A design in my own project?
Its repository states no licence, so its author keeps all rights: ask OLIMEX before reusing the design.