Mechanical Dimensions & Land Pattern (QFN-32(4x4))
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-H2FH4 (QFN-32(4x4))
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of ESP32-H2FH4 (QFN-32(4x4))?
Manufactured by ESPRESSIF, the ESP32-H2FH4 is housed in a QFN-32(4x4) package with 33 pins and a 0.40 mm lead pitch. Key pins include: 1 (VDD3P3: Power Supply Input (VDD3P3 — 3.3V VDD3P3 (3.0V ~ 3.6V))), 2 (VDD3P3: Power Supply Input (VDD3P3 — 3.3V VDD3P3 (3.0V ~ 3.6V))), 3 (GPIO0: Multiplexed I/O & Peripheral Pin GPIO0 (General)), 4 (GPIO1: Multiplexed I/O & Peripheral Pin GPIO1 (General)), 5 (MTMS: Multiplexed I/O & Peripheral Pin MTMS (SWD/JTAG)), 6 (MTDO: Multiplexed I/O & Peripheral Pin MTDO (SWD/JTAG)).
What are the IPC-7351B PCB Footprint dimensions for ESP32-H2FH4?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), ESP32-H2FH4 (QFN-32(4x4)) has a nominal body envelope of 4.00 × 4.00 mm, pitch e = 0.40 mm, and 33 copper pads plus a central exposed thermal pad (EPAD) of 2.80 × 2.80 mm with a 60% IPC-7525 windowed solder paste grid.
Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for ESP32-H2FH4?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for ESP32-H2FH4 (ESPRESSIF, QFN-32(4x4)) 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 (33 pins) & ESP32-H2FH4 Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| 1 | VDD3P3 | Power_In | Primary positive power supply input (VDD3P3) operating in the 3.3V VDD3P3 (3.0V ~ 3.6V) domain (Max rating: 3.6V). |
| 2 | VDD3P3 | Power_In | Primary positive power supply input (VDD3P3) operating in the 3.3V VDD3P3 (3.0V ~ 3.6V) domain (Max rating: 3.6V). |
| 3 | GPIO0 | Digital_IO | Signal terminal GPIO0 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO0. Supported peripheral buses: General. |
| 4 | GPIO1 | Digital_IO | Signal terminal GPIO1 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO1. Supported peripheral buses: General. |
| 5 | MTMS | Digital_IO | Signal terminal MTMS (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: MTMS. Supported peripheral buses: SWD/JTAG. |
| 6 | MTDO | Digital_IO | Signal terminal MTDO (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: MTDO. Supported peripheral buses: SWD/JTAG. |
| 7 | MTCK | Digital_IO | Signal terminal MTCK (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: MTCK. Supported peripheral buses: SWD/JTAG. |
| 8 | MTDI | Digital_IO | Signal terminal MTDI (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: MTDI. Supported peripheral buses: SWD/JTAG. |
| 9 | VDDPST1 | Power_In | Primary positive power supply input (VDDPST1) operating in the 3.3V VDD3P3 (3.0V ~ 3.6V) domain (Max rating: 3.6V). |
| 10 | GPIO8 | Digital_IO | Signal terminal GPIO8 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO8. Supported peripheral buses: General. |
| 11 | GPIO9 | Digital_IO | Signal terminal GPIO9 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO9. Supported peripheral buses: General. |
| 12 | GPIO10 | Digital_IO | Signal terminal GPIO10 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO10. Supported peripheral buses: General. |
| 13 | GPIO11 | Digital_IO | Signal terminal GPIO11 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO11. Supported peripheral buses: General. |
| 14 | GPIO12 | Digital_IO | Signal terminal GPIO12 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO12. Supported peripheral buses: General. |
| 15 | XTAL_32K_P | Digital_IO | Signal terminal XTAL_32K_P (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: XTAL_32K_P. Supported peripheral buses: RTC/CLK. |
| 16 | XTAL_32K_N | Digital_IO | Signal terminal XTAL_32K_N (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: XTAL_32K_N. Supported peripheral buses: RTC/CLK. |
| 17 | CHIP_EN | Digital_IO | Signal terminal CHIP_EN (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: CHIP_EN. Supported peripheral buses: General. |
| 18 | VBAT | Power_In | Primary positive power supply input (VBAT) operating in the 3.3V VDD3P3 (3.0V ~ 3.6V) domain (Max rating: 3.6V). |
| 19 | VDDA_PMU | Power_In | Primary positive power supply input (VDDA_PMU) operating in the 3.3V VDD3P3 (3.0V ~ 3.6V) domain (Max rating: 3.6V). |
| 20 | VDDPST2 | Power_In | Primary positive power supply input (VDDPST2) operating in the 3.3V VDD3P3 (3.0V ~ 3.6V) domain (Max rating: 3.6V). |
| 21 | GPIO22 | Digital_IO | Signal terminal GPIO22 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO22. Supported peripheral buses: General. |
| 22 | U0RXD | Digital_IO | Signal terminal U0RXD (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: U0RXD. Supported peripheral buses: UART. |
| 23 | U0TXD | Digital_IO | Signal terminal U0TXD (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: U0TXD. Supported peripheral buses: UART. |
| 24 | GPIO25 | Digital_IO | Signal terminal GPIO25 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO25. Supported peripheral buses: General. |
| 25 | GPIO26 | Digital_IO | Signal terminal GPIO26 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO26. Supported peripheral buses: General. |
| 26 | GPIO27 | Digital_IO | Signal terminal GPIO27 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO27. Supported peripheral buses: General. |
| 27 | VDD3P3 | Power_In | Primary positive power supply input (VDD3P3) operating in the 3.3V VDD3P3 (3.0V ~ 3.6V) domain (Max rating: 3.6V). |
| 28 | XTAL_N | Digital_IO | Signal terminal XTAL_N (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: XTAL_N. Supported peripheral buses: RTC/CLK. |
| 29 | XTAL_P | Digital_IO | Signal terminal XTAL_P (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: XTAL_P. Supported peripheral buses: RTC/CLK. |
| 30 | VDD3P3 | Power_In | Primary positive power supply input (VDD3P3) operating in the 3.3V VDD3P3 (3.0V ~ 3.6V) domain (Max rating: 3.6V). |
| 31 | VDD3P3 | Power_In | Primary positive power supply input (VDD3P3) operating in the 3.3V VDD3P3 (3.0V ~ 3.6V) domain (Max rating: 3.6V). |
| 32 | ANT | RF_50Ohm | Signal terminal ANT (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: ANT. Supported peripheral buses: General. |
| 33 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |






