4 layers100 × 91.4 mm
4 layers70 × 45 mm
- Size
- 70 × 45 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 62
- Nets
- 31
- Pads
- 173
- Tracks, vias
- 175, 62
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 25 Jul 2024
- Updated
- 6 Nov 2026
Overview
A2d is an open-source printed circuit board by marmbrus, from the marmbrus/circuits repository on GitHub. It is a 4-layer board of 70 × 45 mm with 62 parts on 31 nets, routed with 175 tracks and 62 vias.
It is built around the ADS1115IDGSR, ADM7150ARDZ-5.0 and RCLAMP0502B, with the BM04B-SRSS-TB(LF)(SN) and SP0503BAHTG among its other parts. Its parts include 24 capacitors, 9 resistors, 7 connectors, 6 diodes and 2 ICs.
Main components
5
ADS1115IDGSR
VSSOP-10-40℃~+125℃ 16 1LSB 2 2.048V 2V~5.5V 500nA 860Hz 8Hz、16Hz、32Hz、64Hz、128Hz、250Hz、475Hz、860Hz Built-in Built-in I2C Sigma-Delta Support Yes VSSOP-10 Analog to Digital Converters (ADC) ROHSTexas InstrumentsAnalog To Digital Converters (ADC)ADM7150ARDZ-5.0
SOIC-8-EP-40℃~+125℃@(Ta) 1 16V 1uVrms 5V 800mA Fixed Over Current Protection、Over Temperature Protection、Enable Positive SOIC-8-EP Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAnalog DevicesLinear Voltage Regulators (LDO)
RCLAMP0502B
SOT-523-55℃~+125℃ 0.35pF、0.5pF 2 200nA 4A@8/20us 5V 6.8V 68W@8/20us 9V、15V ESD IEC 61000-4-2、IEC 61000-4-5 Unidirectional SOT-523 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
BM04B-SRSS-TB(LF)(SN)
SMD,P=1mm-25℃~+85℃ 1 1A 1mm 1x4P 3.6mm 4 4.25mm 4P 50V 6mm Auxiliary Solder Pin Copper alloy PA SR Surface Mount,Vertical Tin UL94V-0 White SMD,P=1mm Wire To Board Connector ROHSJSTWire To Board Connector
SP0503BAHTG
SOT-143-55℃~+125℃ 10A@8/20us 14V 150W@8/20us 30pF、60pF 5.5V 6V 80nA ESD IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 Three channels Unidirectional SOT-143 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
README
readme.mdPlugins
Template Setup
Preferences -> Configure Paths...
- KICAD_USER_TEMPLATE_DIR=~/workspace/circuits/templates
Component Setup
easyeda2kicad
- github
easyeda2kicad --output ~/workspace/circuits/libraries/easyeda2kicad --full --lcsc_id=...
Schematics Editor -> Preferences -> Manage Symbol Libraries...
easyeda2kicad -> circuits/libraries/easyeda2kicad/easyeda2kicad.kicad_sym
PCB Editor -> Preferences -> Manage Footprint Libraries...
easyeda2kicad -> circuits/libraries/easyeda2kicad/easyeda2kicad.pretty
Parts
62| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 100nF | Capacitor_SMD:C_0603_1608Metric | C15, C18, C20, C23, C25, C28, C30, C33 |
| 8 | FerriteBead | Inductor_SMD:L_0603_1608Metric | FB1, FB2, FB3, FB4, FB5, FB6, FB7, FB8 |
| 5 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R3, R5, R7, R9 |
| 5 | 1uf | Capacitor_SMD:C_0603_1608Metric | C3, C4, C7, C9, C12 |
| 4 | 10uf | Capacitor_SMD:C_0603_1608Metric | C5, C6, C8, C10 |
| 4 | 3.3uF | Capacitor_SMD:C_0603_1608Metric | C17, C22, C27, C32 |
| 4 | 39302030 | easyeda2kicad:CONN-TH_3P-P4.20_39302030 | CN3, CN4, CN5, CN6 |
| 4 | 5.1M | Resistor_SMD:R_0603_1608Metric | R2, R4, R6, R8 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_4.3mm_M4_ISO7380_Pad | H1, H2, H3, H4 |
| 4 | RCLAMP0502B | Package_TO_SOT_SMD:SOT-416 | D3, D4, D5, D6 |
| 3 | 100nf | Capacitor_SMD:C_0603_1608Metric | C1, C2, C13 |
| 2 | 73412-0110 | easyeda2kicad:ANT-SMD_73412-0110 | RF1, RF2 |
| 2 | BM04B-SRSS-TB(LF)(SN) | easyeda2kicad:CONN-SMD_BM04B-SRSS-TB | CN1, CN2 |
| 2 | SP0503BAHT | Package_TO_SOT_SMD:SOT-143 | D1, D2 |
| 1 | ADM7150ARDZ-5.0 | easyeda2kicad:SOIC-8_L4.9-W3.9-P1.27-LS6.0-BL-EP | U1 |
| 1 | ADS1115IDGSR | easyeda2kicad:MSOP-10_L3.0-W3.0-P0.50-LS5.0-BL | U2 |
| 1 | Conn_02x04_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x04_P2.54mm_Vertical | J1 |
Questions
How big is the A2d PCB?
It measures 70 × 45 mm and has 4 copper layers, 1.6 mm thick.
What parts does the A2d use?
62 parts, built around the ADS1115IDGSR, ADM7150ARDZ-5.0, RCLAMP0502B and BM04B-SRSS-TB(LF)(SN). 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 A2d KiCad files?
From the marmbrus/circuits repository on GitHub, at the commit this page was made from: the board is a2d/a2d.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the A2d design in my own project?
Its repository states no licence, so its author keeps all rights: ask marmbrus before reusing the design.
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