ESP32-PICO-V3-ZERO (WIRELM-SMD_ESP32-PICO-V3-ZERO) — Schematic Symbol, IPC-7351B Footprint & 3D STEP Model

Pin	Symbol	Type	Function (EN)
1	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
2	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
3	DBG RXD/IO3_	I/O	Multiplexed I/O & Peripheral Pin DBG RXD/IO3_ (UART)
4	DBG TXD/IO1_	I/O	Multiplexed I/O & Peripheral Pin DBG TXD/IO1_ (UART)
5	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
6	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
7	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
8	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
9	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
10	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
11	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
12	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
13	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
14	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
15	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
16	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
17	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
18	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
19	EN	I	System Enable & Hardware Reset (EN)
20	GND	GND	Ground Reference Pin (GND)
21	GND	GND	Ground Reference Pin (GND)
22	VDD33	Power	Power Supply Input (VDD33 — 3.3V VDD3P3 (3.0V ~ 3.6V))
23	GND	GND	Ground Reference Pin (GND)
24	GND	GND	Ground Reference Pin (GND)
25	GND	GND	Ground Reference Pin (GND)
26	GND	GND	Ground Reference Pin (GND)
27	GND	GND	Ground Reference Pin (GND)
28	GND	GND	Ground Reference Pin (GND)
29	GND	GND	Ground Reference Pin (GND)
30	GND	GND	Ground Reference Pin (GND)
31	GND	GND	Ground Reference Pin (GND)
32	GND	GND	Ground Reference Pin (GND)
33	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
34	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
35	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
36	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
37	GND	GND	Ground Reference Pin (GND)
38	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
39	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
40	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
41	U1TXD/IO19	I/O	Multiplexed I/O & Peripheral Pin U1TXD/IO19 (UART)
42	GND	GND	Ground Reference Pin (GND)
43	VDD33	Power	Power Supply Input (VDD33 — 3.3V VDD3P3 (3.0V ~ 3.6V))
44	GND	GND	Ground Reference Pin (GND)
45	U1RXD/IO22	I/O	Multiplexed I/O & Peripheral Pin U1RXD/IO22 (UART)
46	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
47	INT B/IO27_	I/O	Multiplexed I/O & Peripheral Pin INT B/IO27_ (General)
48	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
49	GND	GND	Exposed Thermal & Ground Pad (GND)
50	GND	GND	Ground Reference Pin (GND)
51	GND	GND	Ground Reference Pin (GND)
52	GND	GND	Ground Reference Pin (GND)
53	GND	GND	Ground Reference Pin (GND)
54	GND	GND	Ground Reference Pin (GND)
55	GND	GND	Ground Reference Pin (GND)
56	GND	GND	Ground Reference Pin (GND)
57	GND	GND	Exposed Thermal & Ground Pad (GND)
58	GND	GND	Ground Reference Pin (GND)
59	GND	GND	Ground Reference Pin (GND)
60	GND	GND	Ground Reference Pin (GND)
61	GND	GND	Ground Reference Pin (GND)
62	GND	GND	Ground Reference Pin (GND)
63	GND	GND	Ground Reference Pin (GND)
64	GND	GND	Ground Reference Pin (GND)
65	GND	GND	Exposed Thermal & Ground Pad (GND)
66	GND	GND	Ground Reference Pin (GND)
67	GND	GND	Ground Reference Pin (GND)
68	GND	GND	Ground Reference Pin (GND)
69	GND	GND	Ground Reference Pin (GND)
70	GND	GND	Ground Reference Pin (GND)
71	GND	GND	Ground Reference Pin (GND)
72	GND	GND	Ground Reference Pin (GND)
73	GND	GND	Ground Reference Pin (GND)
74	GND	GND	Ground Reference Pin (GND)
75	GND	GND	Ground Reference Pin (GND)
76	GND	GND	Ground Reference Pin (GND)
77	GND	GND	Ground Reference Pin (GND)

Mechanical Dimensions & Land Pattern (WIRELM-SMD_ESP32-PICO-V3-ZERO)

Extracted from Datasheet & IPC-7351B Normalized

Package Body (D × E)Nominal

23.00 × 16.00 mm

Height (A) & Pitch (e)IPC-7351B

A=2.40mm · e=0.80mm

Pad Size (W × L)Level B

0.40 × 0.80 mm

Pins / Total PadsTopology

77P / 77Pad (CASTELLATED_MODULE)

Recommended Companion BOM & Drop-In Equivalents

Passive external components per reference schematic and 1:1 pin-compatible alternatives

DFM READY

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-PICO-V3-ZERO (WIRELM-SMD_ESP32-PICO-V3-ZERO)

Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formats

IPC-7351B / IEEE-315

What is the Pinout and operating voltage specification of ESP32-PICO-V3-ZERO (WIRELM-SMD_ESP32-PICO-V3-ZERO)?

Manufactured by ESPRESSIF, the ESP32-PICO-V3-ZERO is housed in a WIRELM-SMD_ESP32-PICO-V3-ZERO package with 77 pins and a 0.80 mm lead pitch, supporting a VCC supply range of 3.0 ~ 3.6 V. Key pins include: 1 (NC: Multiplexed I/O & Peripheral Pin NC (General)), 2 (NC: Multiplexed I/O & Peripheral Pin NC (General)), 3 (DBG RXD/IO3_: Multiplexed I/O & Peripheral Pin DBG RXD/IO3_ (UART)), 4 (DBG TXD/IO1_: Multiplexed I/O & Peripheral Pin DBG TXD/IO1_ (UART)), 5 (NC: Multiplexed I/O & Peripheral Pin NC (General)), 6 (NC: Multiplexed I/O & Peripheral Pin NC (General)).

What are the IPC-7351B PCB Footprint dimensions for ESP32-PICO-V3-ZERO?

Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), ESP32-PICO-V3-ZERO (WIRELM-SMD_ESP32-PICO-V3-ZERO) has a nominal body envelope of 16.00 × 23.00 mm, pitch e = 0.80 mm, and 77 copper pads.

Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for ESP32-PICO-V3-ZERO?

You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for ESP32-PICO-V3-ZERO (ESPRESSIF, WIRELM-SMD_ESP32-PICO-V3-ZERO) 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 (77 pins) & ESP32-PICO Family VariantsExpand static table

Pin #	Signal Name	Electrical Type	Functional Description & Design Notes
1	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
2	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
3	DBG RXD/IO3_	Digital_IO	Signal terminal DBG RXD/IO3_ (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO3. Supported peripheral buses: UART.
4	DBG TXD/IO1_	Digital_IO	Signal terminal DBG TXD/IO1_ (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO1. Supported peripheral buses: UART.
5	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
6	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
7	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
8	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
9	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
10	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
11	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
12	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
13	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
14	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
15	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
16	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
17	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
18	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
19	EN	Digital_IO	Chip enable and power-on reset control input (EN): High enables the SoC; Low powers down the chip into reset.
20	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
21	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
22	VDD33	Power_In	Primary positive power supply input (VDD33) operating in the 3.3V VDD3P3 (3.0V ~ 3.6V) domain (Max rating: 3.6V).
23	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
24	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
25	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
26	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
27	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
28	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
29	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
30	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
31	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
32	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
33	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
34	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
35	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
36	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
37	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
38	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
39	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
40	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
41	U1TXD/IO19	Digital_IO	Signal terminal U1TXD/IO19 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO19. Supported peripheral buses: UART.
42	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
43	VDD33	Power_In	Primary positive power supply input (VDD33) operating in the 3.3V VDD3P3 (3.0V ~ 3.6V) domain (Max rating: 3.6V).
44	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
45	U1RXD/IO22	Digital_IO	Signal terminal U1RXD/IO22 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO22. Supported peripheral buses: UART.
46	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
47	INT B/IO27_	Digital_IO	Signal terminal INT B/IO27_ (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO27. Supported peripheral buses: General.
48	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
49	GND	GND	Bottom exposed die attach pad (GND) providing primary thermal conduction path to the PCB and low-inductance 0V ground return.
50	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
51	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
52	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
53	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
54	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
55	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
56	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
57	GND	GND	Bottom exposed die attach pad (GND) providing primary thermal conduction path to the PCB and low-inductance 0V ground return.
58	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
59	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
60	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
61	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
62	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
63	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
64	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.

4D Studio: ESP32-PICO-V3-ZERO Permalink: /part/C6244699 ESPRESSIF WIRELM-SMD_ESP32-PICO-V3-ZERO All Packages All Manufacturers

ESP32-PICO-V3-ZERO

Synchronized Pinout (Symbol / 2D / 3D) (77/77)

Live Embedded Datasheet PDF & Technical Drawing Gallery (6 Standard Drawings + 14 Extracted Figures)

Technical Specifications & Part Details (ESP32-PICO-V3-ZERO)

5-Point Standards Verification

Hardware Verification & Community Engineering Reviews

Family Variants & Same Datasheet Chips — ESP32-PICO (4)

ESP32-PICO-D4

ESP32-PICO-V3-02

ESP32-PICO-V3