Mechanical Dimensions & Land Pattern (COMM-SMD_ESP32-DEVKITC-32D)
Extracted from Datasheet & IPC-7351B NormalizedRecommended Companion BOM & Drop-In Equivalents
Passive external components per reference schematic and 1:1 pin-compatible alternatives| Designator / Replacement MPN | Value / Package | Function & PCB Layout Rule |
|---|---|---|
| C1, C2 BOM | 22µF (or 10µF) X5R + 100nF X7R 0805 + 0402 | 3V3 supply decoupling for ~500mA Wi-Fi TX bursts — place closest to 3V3 pin; supply must deliver >= 600mA. |
| R_en + C_en BOM | R = 10kΩ to 3V3 + C = 1µF to GND 0402 / 0603 | Power-On Reset RC delay at EN (CHIP_PU) — 1µF capacitor at EN is REQUIRED for reliable cold boot. |
| R_boot + SW1 BOM | 10kΩ Pull-up + BOOT button 0402 + SMD | Firmware boot-mode strap (IO0 on ESP32/S2/S3, IO9 on ESP32-C3) — on C3 pull IO8 high via 10kΩ for UART/USB download. |
| D_esd BOM | USBLC6-2SC6 / LESD5D5.0CT1G SOT-23-6 / SOD-523 | ESD surge protection on USB D+/D- — place right next to USB Type-C connector before IO18/IO19/IO20. |
| ESP32-S3-MINI-1-N8 / 1U-N4R2 Espressif | 100% Drop-in | Same 15.4×15.4mm 65-pad footprint as ESP32-S2-MINI-2 — verify USB GPIO 19/20 pin mapping. |
Technical Frequently Asked Questions (FAQ) — ESP32-DevKitC-32D (COMM-SMD_ESP32-DEVKITC-32D)
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of ESP32-DevKitC-32D (COMM-SMD_ESP32-DEVKITC-32D)?
Manufactured by ESPRESSIF, the ESP32-DevKitC-32D is housed in a COMM-SMD_ESP32-DEVKITC-32D package with 38 pins and a 0.50 mm lead pitch, supporting a VCC supply range of 65 V ~ 2.0 V. Key pins include: J2-1 (3V3: Power Supply Input (3V3 — 3.3V VDD3P3 (3.0V ~ 3.6V))), J2-10 (IO26: Multiplexed I/O & Peripheral Pin IO26 (General)), J2-11 (IO27: Multiplexed I/O & Peripheral Pin IO27 (General)), J2-12 (IO14: Multiplexed I/O & Peripheral Pin IO14 (General)), J2-13 (IO12: Multiplexed I/O & Peripheral Pin IO12 (General)), J2-14 (GND: Ground Reference Pin (GND)).
What are the IPC-7351B PCB Footprint dimensions for ESP32-DevKitC-32D?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), ESP32-DevKitC-32D (COMM-SMD_ESP32-DEVKITC-32D) has a nominal body envelope of 27.90 × 54.40 mm, pitch e = 0.50 mm, and 38 copper pads.
Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for ESP32-DevKitC-32D?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for ESP32-DevKitC-32D (ESPRESSIF, COMM-SMD_ESP32-DEVKITC-32D) directly on this page, including KiCad 8 Footprints (.kicad_mod), Schematic Symbols (.kicad_sym), Autodesk Fusion 360 / Eagle (.lbr), and 3D STEP AP214 / WebGL GLB models.
Static Reference Appendix: Pinout Table (38 pins) & ESP32-DEVKITC Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| J2-1 | 3V3 | Power_In | Primary positive power supply input (3V3) operating in the 3.3V VDD3P3 (3.0V ~ 3.6V) domain (Max rating: 3.6V). |
| J2-10 | IO26 | Digital_IO | Signal terminal IO26 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: IO26. Supported peripheral buses: General. |
| J2-11 | IO27 | Digital_IO | Signal terminal IO27 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: IO27. Supported peripheral buses: General. |
| J2-12 | IO14 | Digital_IO | Signal terminal IO14 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: IO14. Supported peripheral buses: General. |
| J2-13 | IO12 | Digital_IO | Signal terminal IO12 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: IO12. Supported peripheral buses: General. |
| J2-14 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| J2-15 | IO13 | Digital_IO | Signal terminal IO13 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: IO13. Supported peripheral buses: General. |
| J2-16 | D2 | Digital_IO | Signal terminal D2 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: D2. Supported peripheral buses: General. |
| J2-17 | D3 | Digital_IO | Signal terminal D3 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: D3. Supported peripheral buses: General. |
| J2-18 | CMD | Digital_IO | Signal terminal CMD (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: CMD. Supported peripheral buses: General. |
| J2-19 | 5V | Power_In | Primary positive power supply input (5V) operating in the 3.3V VDD3P3 (3.0V ~ 3.6V) domain (Max rating: 3.6V). |
| J2-2 | EN | Digital_IO | Chip enable and power-on reset control input (EN): High enables the SoC; Low powers down the chip into reset. |
| J2-3 | VP | Digital_IO | Signal terminal VP (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: VP. Supported peripheral buses: General. |
| J2-4 | VN | Digital_IO | Signal terminal VN (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: VN. Supported peripheral buses: General. |
| J2-5 | IO34 | Digital_IO | Signal terminal IO34 (I, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: IO34. Supported peripheral buses: General. |
| J2-6 | IO35 | Digital_IO | Signal terminal IO35 (I, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: IO35. Supported peripheral buses: General. |
| J2-7 | IO32 | Digital_IO | Signal terminal IO32 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: IO32. Supported peripheral buses: General. |
| J2-8 | IO33 | Digital_IO | Signal terminal IO33 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: IO33. Supported peripheral buses: General. |
| J2-9 | IO25 | Digital_IO | Signal terminal IO25 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: IO25. Supported peripheral buses: General. |
| J3-1 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| J3-10 | IO5 | Digital_IO | Signal terminal IO5 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: IO5. Supported peripheral buses: General. |
| J3-11 | IO17 | Digital_IO | Signal terminal IO17 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: IO17. Supported peripheral buses: General. |
| J3-12 | IO16 | Digital_IO | Signal terminal IO16 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: IO16. Supported peripheral buses: General. |
| J3-13 | IO4 | Digital_IO | Signal terminal IO4 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: IO4. Supported peripheral buses: General. |
| J3-14 | IO0 | Digital_IO | Signal terminal IO0 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: IO0. Supported peripheral buses: General. |
| J3-15 | IO2 | Digital_IO | Signal terminal IO2 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: IO2. Supported peripheral buses: General. |
| J3-16 | IO15 | Digital_IO | Signal terminal IO15 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: IO15. Supported peripheral buses: General. |
| J3-17 | D1 | Digital_IO | Signal terminal D1 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: D1. Supported peripheral buses: General. |
| J3-18 | D0 | Digital_IO | Signal terminal D0 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: D0. Supported peripheral buses: General. |
| J3-19 | CLK | Digital_IO | Signal terminal CLK (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: CLK. Supported peripheral buses: General. |
| J3-2 | IO23 | Digital_IO | Signal terminal IO23 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: IO23. Supported peripheral buses: General. |
| J3-3 | IO22 | Digital_IO | Signal terminal IO22 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: IO22. Supported peripheral buses: General. |
| J3-4 | TX | Digital_IO | Signal terminal TX (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: TX. Supported peripheral buses: General. |
| J3-5 | RX | Digital_IO | Signal terminal RX (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: RX. Supported peripheral buses: General. |
| J3-6 | IO21 | Digital_IO | Signal terminal IO21 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: IO21. Supported peripheral buses: General. |
| J3-7 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| J3-8 | IO19 | Digital_IO | Signal terminal IO19 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: IO19. Supported peripheral buses: General. |
| J3-9 | IO18 | Digital_IO | Signal terminal IO18 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: IO18. Supported peripheral buses: General. |




