2 layers51 × 99 mm EcoJM, the printed circuit board in 3D

EcoJM

Size: 51 × 99 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 49
Nets: 63
Pads: 199
Tracks, vias: 153, 184
Pours: 145
Routed: Yes
KiCad: KiCad 10.0 (file 20260206)
Created: 12 Feb 2026
Updated: 26 Sep 2026

Overview

EcoJM is an open-source printed circuit board by CUERT-dev, from the CUERT-dev/EcoJM repository on GitHub. It is a 2-layer board of 51 × 99 mm with 49 parts on 63 nets, routed with 153 tracks and 184 vias.

It is built around the SIT65HVD230DR, MT2492 and AO3400A, with the CD54-6R8M, P6KE47A and SS14 among its other parts. Its parts include 12 resistors, 11 connectors, 9 capacitors, 7 ICs and 2 diodes. It belongs with the STM32 boards of this library.

Main components

README

README.md

EcoJM

Parts

Qty	Value	Footprint	References
4	MountingHole	MountingHole:MountingHole_3.2mm_M3_DIN965	H1, H2, H3, H4
4	Screw_Terminal_01x01	Libmain:M3_PCONN_1x01	J6, J7, J8, J9
2	100n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C2, C5
2	10k	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	R6, R11
2	10u	Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder	C7, C10
2	22u	Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder	C9, C11
2	Conn_01x02_Pin	Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical	J5, J10
2	Screw_Terminal_01x01	Connector_Wire:SolderWire-0.25sqmm_1x01_D0.65mm_OD1.7mm_Relief	J11, J12
1	10k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R18
1	110k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R16
1	120	Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder	R12
1	15k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R17
1	1u	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C8
1	2.7k	Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder	R10
1	20k	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	R7
1	20k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R21
1	22n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C9
1	2k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R20
1	4.7n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C1
1	470	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R19
1	47k	Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder	R9
1	ACS712xLCTR-30A	Package_SO:SOIC-8_3.9x4.9mm_P1.27mm	U1
1	AO3400A	Package_TO_SOT_SMD:SOT-23	Q1
1	AZ1117-3.3	Package_TO_SOT_SMD:SOT-89-3_Handsoldering	U4
1	CD54-6R8M	EasyEDA:IND-SMD_L5.8-W5.2_CD54	L2
1	Conn_01x02_Pin	Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical	J3
1	Conn_01x04_Pin	Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical	J4
1	Fuse	Fuse:Fuseholder_Clip-5x20mm_Littelfuse_520_Inline_P20.50x5.80mm_D1.30mm_Horizontal	F2
1	HX TF PUSH	EasyEDA:TF-SMD_TF-PUSH	U5
1	MT2492	EasyEDA:SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BL_3	U10
1	P6KE47A	Diode_THT:D_DO-15_P10.16mm_Horizontal	D1
1	Relay_SPDT	liblocal:T91 30A	K1
1	SIT65HVD230DR	EasyEDA:SOP-8_L4.9-W3.9-P1.27-LS6.0-BL	U9
1	SS14	Diode_SMD:D_SMA	D2
1	STM32F_dev	dev_board:STM32F_devboard	U6
1	Screw_Terminal_01x02	TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2_1x02_P5.00mm_Horizontal	J1
1	TL431DBZ	Package_TO_SOT_SMD:SOT-23	U2

Questions

How big is the EcoJM PCB?

It measures 51 × 99 mm and has 2 copper layers, 1.6 mm thick.

What parts does the EcoJM use?

49 parts, built around the SIT65HVD230DR, MT2492, AO3400A and CD54-6R8M. 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 EcoJM KiCad files?

From the CUERT-dev/EcoJM repository on GitHub, at the commit this page was made from: the board is EcoJM/EcoJM.kicad_pcb and its schematic EcoJM/EcoJM.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the EcoJM design in my own project?

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

Category and platform

STM32

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/cuert-dev-ecojm" title="EcoJM 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/cuert-dev-ecojm.jpg" alt="EcoJM" width="1200" height="900">

A picture that opens the board, for a README

[![EcoJM](https://pcbkit.io/embed/boards/cuert-dev-ecojm.jpg?size=s)](https://pcbkit.io/boards/cuert-dev-ecojm)

Source

Repository: CUERT-dev/EcoJM
Board file: EcoJM/EcoJM.kicad_pcb
Commit: 68d0744
Licence: Not stated

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