4 layers91.6 × 84.4 mm SDU V1, the printed circuit board in 3D

SDU V1

Suspension Data Unit

Size: 91.6 × 84.4 mm
Copper layers: 4
Thickness: 1.6 mm
Parts: 237
Nets: 151
Pads: 788
Tracks, vias: 1,287, 849
Pours: 23
Routed: Yes
KiCad: KiCad 10.0 (file 20260206)
Created: 14 Jul 2025
Updated: 5 May 2026

Overview

SDU V1 is an open-source printed circuit board by bruinformula, from the bruinformula/sdu-pcb repository on GitHub. It is a 4-layer board of 91.6 × 84.4 mm with 237 parts on 151 nets, routed with 1,287 tracks and 849 vias.

It is built around the NCS325SN2, NCS21802DMR2G-HXY and SPAN02A-05, with the TPS5430DDAR, AMS1117-3.3 and AT24C16C-PUM among its other parts. Its parts include 117 resistors, 52 capacitors, 24 transistors, 20 ICs and 5 diodes.

Main components

README

README.md

sdu-pcb

Suspension Data Unit

Parts

237

Qty	Value	Footprint	References
32	100k	Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R1201, R1202, R1203, R1204, R1212, R1501, R1502, R1503, R1504, R1512, R1701, R1702, R1703, R1704, R1712, R1901 +16
30	100k 0.1% 10ppm	Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R1205, R1206, R1207, R1208, R1214, R1505, R1506, R1507, R1508, R1514, R1705, R1706, R1707, R1708, R1714, R1905 +14
19	100n	Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder	C302, C303, C304, C305, C307, C1001, C1203, C1303, C1317, C1503, C1703, C1903, C2301, C2302, C2303, C2304 +3
18	120 0603 0.1%	Resistor_SMD:R_0603_1608Metric	R809, R810, R811, R909, R1209, R1210, R1211, R1509, R1510, R1511, R1709, R1710, R1711, R1909, R1910, R1911 +2
12	AO3400A	Package_TO_SOT_SMD:SOT-23-3	Q802, Q804, Q902, Q904, Q1202, Q1204, Q1502, Q1504, Q1702, Q1704, Q1902, Q1904
12	AO3401A	Package_TO_SOT_SMD:SOT-23-3	Q801, Q803, Q901, Q903, Q1201, Q1203, Q1501, Q1503, Q1701, Q1703, Q1901, Q1903
8	4.7k	Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R201, R202, R1305, R1306, R1307, R1308, R1315, R1316
7	22u	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C401, C402, C1308, C2401, C2402, C2403, C2404
6	100 0.1% 10ppm	Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R813, R913, R1213, R1513, R1713, R1913
6	2.2u	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C802, C902, C1202, C1502, C1702, C1902
6	22u	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C801, C901, C1201, C1501, C1701, C1901
6	BEND_COMP	bfr_utilities:0402 Jumper NC	SB801, SB901, SB1201, SB1501, SB1701, SB1901
6	MCP6N16	Package_SO:MSOP-8_3x3mm_P0.65mm	U801, U901, U1201, U1501, U1701, U1901
5	10k	Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R602, R1304, R1312, R1313, R1314
4	10n	Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder	C603, C605, C606, C3501
4	MountingHole_Pad_MP	MountingHole:MountingHole_2.7mm_M2.5_Pad_Via	H2401, H2402, H2403, H2404
3	100	Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R601, R1309, R1310
3	100n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C1312, C2202, C2203
3	10u	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C602, C2201, C2204
2	22k	Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R1303, R3502
2	510	Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R1301, R1302
2	820	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R502, R503
2	82u	Capacitor_THT:CP_Radial_D6.3mm_P2.50mm	C601, C604
2	AMS1117-3.3	Package_TO_SOT_SMD:SOT-223-3_TabPin2	U2401, U2402
2	Connector	Connector_Molex:Molex_Micro-Fit_3.0_43650-0400_1x04_P3.00mm_Horizontal	J2401, J2403
2	ISO6741FDWR	Package_SO:SOIC-16W_7.5x10.3mm_P1.27mm	U2301, U2302
2	NCS325	Package_TO_SOT_SMD:SOT-23-5	U1307, U3501
1	1.0k	Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R2401
1	100uH	Inductor_SMD:L_TDK_SLF6045	L601
1	10k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R501
1	15P High Density DSUB	bfr_connectors:AMPHENOL_L77HDE15SD1CH4FVGA	J2402
1	15k	Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R3501
1	1N5819WS	Diode_SMD:D_SOD-323	D601
1	1u	Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder	C1304
1	2.2u	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C1306
1	20V	Diode_SMD:D_SMB	D501
1	26P_High_Density_DSUB	bfr_connectors:AMPHENOL_L77HDA26SD1CH4F	J2404
1	3.3k	Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R603
1	4.9152MHz	Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm_HandSoldering	Y301
1	470	Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R2201
1	500mA	Fuse:Fuse_1812_4532Metric	F501
1	51k	Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R1311
1	6.8k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R1001
1	680	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R401
1	8.2M	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R3503
1	AT24C16C-PUM	Package_DIP:DIP-8_W7.62mm_Socket	U1001
1	BZX84-C5V1-QR	Package_TO_SOT_SMD:SOT-23	D402
1	Display	bfr_utilities:1.3 OLED Display	U201
1	GND	bfr_utilities:TestPoint_Keystone_5019_Miniature	TP2401
1	Green	Diode_SMD:D_0805_2012Metric_Pad1.15x1.40mm_HandSolder	D2201
1	Krill	bfr_connectors:Krill	MCU1301
1	MCP3464RT-E/ST	Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm	U301
1	NCS21802DMR2G	Package_SO:SOIC-8_3.9x4.9mm_P1.27mm	U1303
1	PWR	LED_SMD:LED_0603_1608Metric	D401
1	SPAN02A-05	Converter_DCDC:Converter_DCDC_XP_POWER-ITxxxxxS_THT	U2201
1	TPS25961	Package_SON:WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm	U501
1	TPS5430DDAR	Package_SO:TI_SO-PowerPAD-8	U601
1	TPS7B8733QKVURQ1	Package_TO_SOT_SMD:TO-252-5_TabPin3	U401

Questions

How big is the SDU V1 PCB?

It measures 91.6 × 84.4 mm and has 4 copper layers, 1.6 mm thick.

What parts does the SDU V1 use?

237 parts, built around the NCS325SN2, NCS21802DMR2G-HXY, SPAN02A-05 and TPS5430DDAR. 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 SDU V1 KiCad files?

From the bruinformula/sdu-pcb repository on GitHub, at the commit this page was made from: the board is SDU V1/SDU V1.kicad_pcb and its schematic SDU V1/.history/3V3_ldo.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the SDU V1 design in my own project?

Its repository states no licence, so its author keeps all rights: ask bruinformula before reusing the design.

Topics

lv-pcb

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/bruinformula-sdu-pcb" title="SDU V1 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/bruinformula-sdu-pcb.jpg" alt="SDU V1" width="1200" height="900">

A picture that opens the board, for a README

[![SDU V1](https://pcbkit.io/embed/boards/bruinformula-sdu-pcb.jpg?size=s)](https://pcbkit.io/boards/bruinformula-sdu-pcb)

Source

Repository: bruinformula/sdu-pcb
Board file: SDU V1/SDU V1.kicad_pcb
Commit: 9c9695c
Licence: Not stated
Copies: 3 copies in 1 repository

Similar boards

6 layers48.1 × 69.6 mm
DU UC V1 - Minnow
bruinformula/Minnow-Breakout-PCB
STM32L552ZET6Q Breakout "Minnow"
145 parts
4 layers152.4 × 70.4 mm
UCM67 Precharge PCB
Michael-Spurdle/Projects

105 parts
2 layers162 × 120 mm
Romavis lwdo sdr hw lwdo sdr
oomlout/oomlout_oomp_project_bot_v_2

368 parts
2 layers76 × 95.8 mm
Supervisor
kaminaris/GigaESC

97 parts47
4 layers130 × 105 mm
HomeDeck
Kilan777/HomeDeck
Jarvis HomeDeck: a Raspberry Pi CM4 carrier board and voice-assistant software for a 7-inch smart display (KiCad hardware, generated from Python, plus the Python/JS assistant)
228 parts1
2 layers100 × 85 mm
ESP32 MediaCarrier routed
xmyoot/esp32-media-carrier
ESP32 multimedia carrier board with 7–24 V DC buck regulator, 3.2 W Class-D I2S audio amp, WS2812 LED ring driver, and SPI TFT display header
97 partsMIT
2 layers40.2 × 35.2 mm
Trofymova01
nikatrofimova95-code/Kicad_lab.3-4

10 parts
4 layers255.9 × 224.5 mm
Central control unit
RomLab/pcb-system-for-underfloor-heating-v2.0
PCB for underfloor heating system
929 parts1