4 layers26.4 × 56 mm
RPI5-SDexpress Hat
will127534/RPI5-SDexpress-Hat
ctrl-c "RPI5-CFE-Hat" ctrl-v "RPI5-SDexpress-Hat"
51 parts37MIT
2 layers26.7 × 21 mm
Microsd express
vapetrov/microSD_express_Pi77- Size
- 26.7 × 21 mm
- Copper layers
- 2
- Thickness
- 0.14 mm
- Parts
- 25
- Nets
- 26
- Pads
- 95
- Tracks, vias
- 279, 45
- Pours
- 94
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 16 Jul 2025
- Updated
- 10 Aug 2025
Overview
Microsd express is an open-source printed circuit board by vapetrov, from the vapetrov/microSD_express_Pi repository on GitHub, published under the MIT licence. It is a 2-layer board of 26.7 × 21 mm with 25 parts on 26 nets, routed with 279 tracks and 45 vias.
It is built around the MIC2230-GSYML-TR and 10102166A812A. Its parts include 11 capacitors, 6 resistors, 2 connectors, 2 inductors and 1 IC.
Main components
2MIC2230-GSYML-TR
TDFN-12-EP(3x3)-40℃~+125℃@(TJ) 2 2.5MHz 2.5V~5.5V 800mA Buck Buck Built-in Fixed Yes TDFN-12-EP(3x3) DC-DC Converters ROHSMicrochip TechnologyDC-DC Converters
10102166A812A
SMD1.55mm Connector and Ejector MicroSD Card (TF Card) Push-Pull Yes SMD SD Card / Memory Card Connector ROHSAmphenolSD Card / Memory Card Connector
README
README.mdmicroSD-express Pi Adapter
- This adapter allows you to connect a MicroSD Express card directly to the PCIe connector on a Raspberry Pi 5
- Very fast speeds (800MB/s sequential read) can be achieved this way
- NOTE: controlled impedance is critical for good PCIe performance. The files are designed for 50μm PI dielectric and 0.5oz copper.
Parts
25| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 22u | Capacitor_SMD:C_0402_1005Metric | C1, C2, C3, C5, C6, C7, C10, C11 |
| 3 | 220n | Capacitor_SMD:C_0402_1005Metric | C4, C8, C9 |
| 3 | 33 | Resistor_SMD:R_0402_1005Metric | R1, R5, R6 |
| 2 | 2.2u | 1Library:F1C1-201612-2R2M | L1, L2 |
| 2 | TestPoint | 1Library:testpoint | TP1, TP2 |
| 1 | 100k | Resistor_SMD:R_0402_1005Metric | R2 |
| 1 | 10102166A812A | 1Library:AMPHENOL_10102166A812A | J1 |
| 1 | 3k6 | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | 6k8 | Resistor_SMD:R_0402_1005Metric | R4 |
| 1 | Conn_01x16 | 1Library:PCIe_connector | J2 |
| 1 | Jumper_2_Open | 1Library:Jumper | JP1 |
| 1 | MIC2230-GSYML-TR | 1Library:MLF-12_YML_MCH-L | U1 |
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Questions
How big is the Microsd express PCB?
It measures 26.7 × 21 mm and has 2 copper layers, 0.14 mm thick.
What parts does the Microsd express use?
25 parts, built around the MIC2230-GSYML-TR and 10102166A812A. 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 Microsd express KiCad files?
From the vapetrov/microSD_express_Pi repository on GitHub, at the commit this page was made from: the board is microsd_express.kicad_pcb and its schematic microsd_express.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Microsd express 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).