4 layers100 × 100 mm
4 layers52.5 × 57.5 mm
First esp32
Jnorth2/first_esp32First project on pcb design
- Size
- 52.5 × 57.5 mm
- Copper layers
- 4
- Thickness
- 1.54 mm
- Parts
- 77
- Nets
- 69
- Pads
- 307
- Tracks, vias
- 658, 364
- Pours
- 32
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 20 Jul 2026
- Updated
- 14 Aug 2026
Overview
First esp32 is an open-source printed circuit board by Jnorth2, from the Jnorth2/first_esp32 repository on GitHub. It is a 4-layer board of 52.5 × 57.5 mm with 77 parts on 69 nets, routed with 658 tracks and 364 vias.
It is built around the ESP32-S3-WROOM-1-N8, TJA1051T/3 and AMS1117-3.3, with the USBLC6-2SC6, B3U-1000P and SM04B-GHS-TB among its other parts. Its parts include 22 capacitors, 17 resistors, 9 connectors, 7 diodes and 6 ICs. It belongs with the ESP32 boards of this library.
Main components
9
ESP32-S3-WROOM-1-N8
SMD,25.5x18mm-40℃~+85℃ -98.2dBm 2.4GHz 20.5dBm 355mA 3V~3.6V 95mA Bluetooth5.0 ESP32-S3 Chip On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
TJA1051T/3
SOP-8-40℃~+150℃ 2.5mA 4.5V~5.5V 5Mbps 70mA SOP-8 CAN Transceivers ROHSTokmasCAN Transceivers
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
B3U-1000P
SMD,3x2.5mm-25℃~+70℃ 1.53N 1.6mm 12V 2.5mm 3mm 50mA Round Button SMD(SMT) Tab SPST Surface Mount,Vertical SMD,3x2.5mm Tactile Switches ROHSOmronTactile Switches
SM04B-GHS-TB
SMD,P=1.25mm,卧贴-25℃~+85℃ 1 1.25mm 1A 1x4P 4 4.13mm 4.25mm 4P 50V 8.25mm Auxiliary Solder Pin GH PA9T Phosphor bronze Surface Mount, Right Angle Tin UL94V-0 White SMD,P=1.25mm,卧贴 Wire To Board Connector ROHSJSTWire To Board Connector
1N5819HW-7-F-01
SOD-123Schottky DiodesDiodes Incorporated
DMP3098L-7-ES
SOT-23-55℃~+150℃ 1 P-Channel 1.4W 30V 4.2A 42mΩ@10V、49mΩ@4.5V 47pF 510pF 54pF 800mV 9.4nC@4.5V P-Channel SOT-23 MOSFETs ROHSElecSuperMOSFETs
SI2338DS
SOT-23-3(TO-236-3)-55℃~+150℃ 1 N-channel 1.3W、2.5W 13nC@10V 2.5V 28mΩ@10V 30V 424pF 6A SOT-23 MOSFETs ROHSVishay IntertechnologyMOSFETs
Parts
77| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 100n | Capacitor_SMD:C_0603_1608Metric | C4, C8, C10, C11, C17, C18 |
| 6 | Fiducial | Fiducial:Fiducial_1mm_Mask2mm | FID1, FID2, FID3, FID4, FID5, FID6 |
| 4 | 100 | Resistor_SMD:R_0603_1608Metric | R9, R10, R11, R15 |
| 4 | M3 | MountingHole:MountingHole_3.2mm_M3_Pad_Via | M3x0.5, MH1, MH2, MH3 |
| 3 | 10k | Resistor_SMD:R_0603_1608Metric | R7, R8, R17 |
| 3 | 10uF | Capacitor_SMD:C_0805_2012Metric | C7, C19, C22 |
| 3 | 22uF | Capacitor_SMD:C_1210_3225Metric | C9, C12, C14 |
| 3 | 5055670271 | Footprints:CONN_505567_02_MOL | J1, J2, J3 |
| 2 | 100k | Resistor_SMD:R_0603_1608Metric | R4, R5 |
| 2 | 100nF | Capacitor_SMD:C_0603_1608Metric | C20, C24 |
| 2 | 10u | Capacitor_SMD:C_0805_2012Metric | C1, C15 |
| 2 | 1uF | Capacitor_SMD:C_0603_1608Metric | C6, C23 |
| 2 | 4u7 | Capacitor_SMD:C_0603_1608Metric | C3, C5 |
| 2 | 5k1 | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | 60 | Resistor_SMD:R_0603_1608Metric | R12, R13 |
| 2 | B3U-1000P | Button_Switch_SMD:SW_SPST_B3U-1000P | Boot, EN |
| 2 | LED | LED_SMD:LED_0603_1608Metric | D3, D6 |
| 2 | SM04B-GHS-TB | Footprints:CONN_SM04B-GHS-TB_JST | J8, J10 |
| 2 | XT30 (right-angle) | Connector_AMASS:AMASS_XT30PW-F_1x02_P2.50mm_Horizontal | J9, J11 |
| 1 | 0R | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 10k | Resistor_SMD:R_0402_1005Metric | R14 |
| 1 | 1N5819HW-7-F | Diode_SMD:D_0805_2012Metric | D1 |
| 1 | 220 | Resistor_SMD:R_0603_1608Metric | R16 |
| 1 | 220n | Capacitor_SMD:C_0603_1608Metric | C2 |
| 1 | 24.9k | Resistor_SMD:R_0603_1608Metric | R6 |
| 1 | 2u2 | Inductor_SMD:L_Wuerth_WE-PD-Typ-7345 | L1 |
| 1 | 4.7nF | Capacitor_SMD:C_0603_1608Metric | C21 |
| 1 | 5054482071 | Footprints:CONN_505448_20_MOL | J7 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U3 |
| 1 | AP3602A | Package_TO_SOT_SMD:SOT-23-6 | U5 |
| 1 | DMP3098L-7 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | ESP32-S3-WROOM-1 | RF_Module:ESP32-S3-WROOM-1 | U4 |
| 1 | LMR33630 | Footprints:DDA0008J_NV | U2 |
| 1 | MMSZ5245B (15V) | Diode_SMD:D_SOD-123 | D4 |
| 1 | SMAJ33A (33V TVS) | Diode_SMD:D_SMA | D5 |
| 1 | SMAJ6.0A (6.0V TVS) | Diode_SMD:D_SMA | D2 |
| 1 | SS34 (40V 3A Schottky, flyback) | Diode_SMD:D_SMA | D7 |
| 1 | Si2338DS | Package_TO_SOT_SMD:SOT-23 | Q2 |
| 1 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | TJA1051T/3 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U6 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U1 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J6 |
Questions
How big is the First esp32 PCB?
It measures 52.5 × 57.5 mm and has 4 copper layers, 1.54 mm thick.
What parts does the First esp32 use?
77 parts, built around the ESP32-S3-WROOM-1-N8, TJA1051T/3, AMS1117-3.3 and USBLC6-2SC6. 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 First esp32 KiCad files?
From the Jnorth2/first_esp32 repository on GitHub, at the commit this page was made from: the board is First_ESP32.kicad_pcb and its schematic .claude/pre_bom_fields_backup.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the First esp32 design in my own project?
Its repository states no licence, so its author keeps all rights: ask Jnorth2 before reusing the design.
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