4 layers41.8 × 49.6 mm
4 layers33 × 34.7 mm
EIS PCB
akshayshivkumar/EIS-PCB1PCB for Electrochemical Impedance Spectroscopy with the AD5941
- Size
- 33 × 34.7 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 54
- Nets
- 87
- Pads
- 285
- Tracks, vias
- 566, 135
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 19 Nov 2025
- Updated
- 23 Feb 2026
Overview
EIS PCB is an open-source printed circuit board by akshayshivkumar, from the akshayshivkumar/EIS-PCB repository on GitHub. It is a 4-layer board of 33 × 34.7 mm with 54 parts on 87 nets, routed with 566 tracks and 135 vias.
It is built around the ESP32-S3-WROOM-1-N8R8, AD5941BCPZ and 10051922-1810ELF, with the GSB1C41110SSHR and IRLML6344TRPBF among its other parts. Its parts include 22 capacitors, 17 resistors, 6 connectors, 5 ICs and 2 switches. It belongs with the ESP32 boards of this library.
Main components
5
ESP32-S3-WROOM-1-N8R8
SMD,25.5x18mm-104.5dBm -40℃~+65℃ 2.4GHz 20.5dBm 330mA 3V~3.6V 97mA Bluetooth5.0 ESP32-S3R8 On-board PCB Antenna UART、SPI、I2C、GPIO、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
AD5941BCPZ
LFCSP-48-40℃~+85℃ 1 16 16MHz、32MHz 1uA 2.5V 2.8V~3.6V 80dB Programmable gain、Multiplexers、Input buffering、Internal reference source、Power-on reset SPI LFCSP-48 Analog Front End (AFE) ROHSAnalog DevicesAnalog Front End (AFE)
10051922-1810ELF
SMD,P=0.5mm,卧贴FFC, FPC (Flat Flexible) Connector AssembliesAmphenol
GSB1C41110SSHR
USB-SMDUSB-SMD New Arrivals ROHSAmphenolUSB Connectors
IRLML6344TRPBF
SOT-23-55℃~+150℃ 1 N-channel 1.1V 1.3W 29mΩ@4.5V 30V 46pF 5A 6.8nC 650pF SOT-23 MOSFETs ROHSInfineon TechnologiesMOSFETs
Parts
54| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 4.7k | Resistor_SMD:R_0402_1005Metric | R9, R10, R26, R27, R28, R29, R30, R31 |
| 5 | 100n | Capacitor_SMD:C_0402_1005Metric | C1, C2, C3, C9, C10 |
| 4 | 470n | Capacitor_SMD:C_0402_1005Metric | C4, C6, C7, C8 |
| 3 | 100nF | Capacitor_SMD:C_0402_1005Metric | C12, C25, C26 |
| 3 | 10k | Resistor_SMD:R_0402_1005Metric | R12, R17, R25 |
| 2 | 10uF | Capacitor_SMD:C_0402_1005Metric | C11, C18 |
| 2 | 1uF | Capacitor_SMD:C_0402_1005Metric | C23, C24 |
| 2 | 1uF | Capacitor_SMD:C_0603_1608Metric | C19, C22 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R13, R15 |
| 2 | Conn_01x01_Socket | Connector_Wire:SolderWirePad_1x01_SMD_1x2mm | J1, J3 |
| 2 | SW_Push_Dual | SWITCH_0SMTRLFS-L:SWITCH_0SMTRLFS-L | SW1, SW2 |
| 1 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C21 |
| 1 | 10051922-1810ELF | 10051922-1810ELF:AMPHENOL_10051922-1810ELF | J13 |
| 1 | 100R | Resistor_SMD:R_0402_1005Metric | R2 |
| 1 | 100k | Resistor_SMD:R_0402_1005Metric | R14 |
| 1 | 104031-0811 | 104031-0811:MOLEX_104031-0811 | J12 |
| 1 | 10R | Resistor_SMD:R_0402_1005Metric | R16 |
| 1 | 10k | Resistor_SMD:R_0805_2012Metric | R1 |
| 1 | 10uF | Capacitor_SMD:C_0603_1608Metric | C17 |
| 1 | 4.7u | Capacitor_SMD:C_0402_1005Metric | C5 |
| 1 | 4.7uF | Capacitor_SMD:C_0402_1005Metric | C20 |
| 1 | AD5941BCPZ | AD5941BCPZ:QFN50P700X700X80-49N | U1 |
| 1 | Conn_01x02_Socket | S2B_PH_K_S_LF__SN_:CONN_S2B-PH-K-S_JST | J7 |
| 1 | ESP32-S3-WROOM-1-N8R8 | ESP32-S3-WROOM-1-N8R8:XCVR_ESP32S3WROOM1N8R8 | U3 |
| 1 | GSB1C41110SSHR | GSB1C41110SSHR:AMPHENOL_GSB1C41110SSHR | J2 |
| 1 | IRLML6344TRPBF | IRLML6344TRPBF:TRANS_IRLML6344TRPBF | Q3 |
| 1 | LED | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | LGA14-L_2P59X3P1X0P5_STM | LSM6DSVTR:LGA14-L_2P59X3P1X0P5_STM-L | U2 |
| 1 | MCP73831T-2DCI_OT | MCP73831T-2DCI_OT:SOT95P270X145-5N | U4 |
| 1 | NCP186AMX330TAG | NCP186AMX330TAG:PSON40P160X120X45-9N | U5 |
Questions
How big is the EIS PCB PCB?
It measures 33 × 34.7 mm and has 4 copper layers, 1.6 mm thick.
What parts does the EIS PCB use?
54 parts, built around the ESP32-S3-WROOM-1-N8R8, AD5941BCPZ, 10051922-1810ELF and GSB1C41110SSHR. 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 EIS PCB KiCad files?
From the akshayshivkumar/EIS-PCB repository on GitHub, at the commit this page was made from: the board is eis_pcb.kicad_pcb and its schematic eis_pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the EIS PCB design in my own project?
Its repository states no licence, so its author keeps all rights: ask akshayshivkumar before reusing the design.
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