4 layers155 × 170 mm
4 layers155 × 170 mm
SramBoard
tiydwe/SRAMSRAM from scratch!
- Size
- 155 × 170 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 2,021
- Nets
- 1,026
- Pads
- 5,402
- Tracks, vias
- 18,625, 1,438
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 2 Oct 2026
- Updated
- 31 Oct 2026
Overview
SramBoard is an open-source printed circuit board by tiydwe, from the tiydwe/SRAM repository on GitHub, published under the CERN-OHL-P-2.0 licence. It is a 4-layer board of 155 × 170 mm with 2,021 parts on 1,026 nets, routed with 18,625 tracks and 1,438 vias.
Its parts include 1,336 transistors, 278 resistors, 137 connectors, 136 capacitors and 128 diodes.
README
README.mdSRAM from scratch
256 bytes of SRAM from discrete sot-23 mosfets built without any ICs!
I'm still working on this project!
More coming to this README eventually.
Parts
2,021| Qty | Value | Footprint | References |
|---|---|---|---|
| 996 | Q_NMOS_GSD | easyeda2kicad:SOT-23-N | Q1, Q10, Q100, Q101, Q1000, Q1001, Q1003, Q1004, Q1006, Q1007, Q1008, Q1009, Q1010, Q1012, Q1013, Q1015 +980 |
| 340 | Q_PMOS_GSD | easyeda2kicad:SOT-23-P | Q102, Q105, Q1002, Q1005, Q1011, Q1014, Q1020, Q1023, Q1029, Q1032, Q1038, Q1041, Q1047, Q1050, Q1056, Q1059 +324 |
| 128 | 100nC | Capacitor_SMD:C_0805_2012Metric | C10, C11, C100, C101, C102, C103, C104, C105, C106, C107, C108, C109, C110, C111, C112, C113 +112 |
| 128 | 180R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R11, R101, R103, R105, R107, R109, R111, R113, R115, R117, R119, R121, R123, R125, R127, R129 +112 |
| 128 | 47R | Resistor_SMD:R_0603_1608Metric | R10, R12, R100, R102, R104, R106, R108, R110, R112, R114, R116, R118, R120, R122, R124, R126 +112 |
| 128 | Conn_01x02_Pin | Connector_PinHeader_1.00mm:PinHeader_1x02_P1.00mm_Vertical | J10, J11, J100, J101, J102, J103, J104, J105, J106, J107, J108, J109, J110, J111, J112, J113 +112 |
| 128 | LED | Capacitor_SMD:C_0805_2012Metric | D1, D10, D11, D100, D101, D102, D103, D104, D105, D106, D107, D108, D109, D110, D111, D112 +112 |
| 16 | 10kR | Resistor_SMD:R_0603_1608Metric | R263, R264, R265, R266, R267, R268, R269, R270, R271, R272, R273, R274, R275, R276, R277, R278 |
| 8 | Conn_01x01_Pin | Connector_Wire:Wire_Pad_18AWG_stranded | J130, J131, J132, J133, J134, J135, J136, J137 |
| 6 | 0R | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R2, R3, R4, R5, R6 |
| 6 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_DIN965_Pad | H1, H2, H3, H4, H5, H6 |
| 4 | 100nC | Capacitor_SMD:C_0603_1608Metric | C133, C134, C135, C136 |
| 4 | 100uC_Polarized | Capacitor_SMD:CP_Elec_6.3x7.7 | C1, C2, C3, C4 |
| 1 | Conn_02x20_Top_Bottom | Connector_IDC:IDC-Header_2x20_P2.54mm_Horizontal | J1 |
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Questions
How big is the SramBoard PCB?
It measures 155 × 170 mm and has 4 copper layers, 1.6 mm thick.
What parts does the SramBoard use?
2,021 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 SramBoard KiCad files?
From the tiydwe/SRAM repository on GitHub, at the commit this page was made from: the board is kicad/sramBoard/sramBoard.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the SramBoard design in my own project?
Its repository publishes it under the CERN-OHL-P-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).