Unidirectional level shifter
About the Unidirectional level shifter PCB
Unidirectional level shifter is an open source PCB design by Smoothieware, published on GitHub. It is a 2-layer board measuring 64.6 × 29.8 mm, with 61 components from 11 distinct parts.
By type, the board carries 21 transistors, 14 resistors, 10 connectors, 7 jumpers, 6 capacitors and 2 diodes.
From the project
Hardware files for the Smoothieboard v2, and extension boards
3D file to get a nice look: https://skfb.ly/PWBn (colors slightly messed up for some reason)
Unidirectional level shifter bill of materials (BOM)
61 components, 11 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 14 | FDN339AN | SOT-23 | Q1, Q2, Q3, Q4, Q6, Q8, Q10, Q12 +6 |
| 7 | SI2301 | SOT-23 | Q5, Q7, Q9, Q11, Q16, Q18, Q20 |
| 7 | CONN_01X03 | Molex_KK_6410-03 | P1, P2, P3, P4, P5, P6, P7 |
| 1 | CONN_01X02 | FCI_20020110-C021A01LF | P8 |
| 2 | CONN_02X05 | SHF-105-01-L-D-SM-LC | P9, P10 |
| 1 | 1pin | 1pin | 5,5 |
| 7 | JUMPER | Solder-jumper-NC | JP1, JP2, JP3, JP4, JP5, JP6, JP7 |
| 2 | FSV12120V | TO-277_3L | D1, D2 |
| 3 | 100nF | C_0603 | C1, C3, C5 |
| 3 | 10uF | C_0805 | C2, C4, C6 |
| 14 | 1K | R_0603 | R1, R2, R3, R4, R5, R6, R7, R8 +6 |
Unidirectional level shifter design files
The KiCad project lives in the Smoothieware/Smoothieboard2 repository on GitHub; these links point at the commit this page was built from.
Unidirectional level shifter: common questions
How big is the Unidirectional level shifter PCB?
The Unidirectional level shifter measures 64.6 × 29.8 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Unidirectional level shifter?
61 components, from 11 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 Unidirectional level shifter design files?
From the Smoothieware/Smoothieboard2 repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Unidirectional level shifter design in my own project?
The repository has no license, so all rights stay with Smoothieware. Use it as a reference, and ask the author before reusing the design.
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