ESP32-PICO-V3 (TFQFN-48-EP) — Schematic Symbol, IPC-7351B Footprint & 3D STEP Model

Pin	Symbol	Type	Function (EN)
1	VDDA	Power	Power Supply Input (VDDA — 3.3V VDD3P3 (3.0V ~ 3.6V))
2	LNA_IN	I/O	Multiplexed I/O & Peripheral Pin LNA_IN (General)
3	VDDA3P3	Power	Power Supply Input (VDDA3P3 — 3.3V VDD3P3 (3.0V ~ 3.6V))
4	VDDA3P3	Power	Power Supply Input (VDDA3P3 — 3.3V VDD3P3 (3.0V ~ 3.6V))
5	SENSOR VP/I36_	I/O	Multiplexed I/O & Peripheral Pin SENSOR VP/I36_ (ADC, RTC/CLK)
6	SENSOR CAPP/I37_	I/O	Multiplexed I/O & Peripheral Pin SENSOR CAPP/I37_ (ADC, RTC/CLK)
7	SENSOR CAPN/I38_	I/O	Multiplexed I/O & Peripheral Pin SENSOR CAPN/I38_ (ADC, RTC/CLK)
8	SENSOR VN/I39_	I/O	Multiplexed I/O & Peripheral Pin SENSOR VN/I39_ (ADC, RTC/CLK)
9	EN	I	System Enable & Hardware Reset (EN)
10	VDET 1/I34_	I/O	Multiplexed I/O & Peripheral Pin VDET 1/I34_ (ADC)
11	VDET 2/I35_	I/O	Multiplexed I/O & Peripheral Pin VDET 2/I35_ (ADC)
12	32K XP/IO32_	I/O	Multiplexed I/O & Peripheral Pin 32K XP/IO32_ (ADC, RTC/CLK, TOUCH)
13	32K XN/IO33_	I/O	Multiplexed I/O & Peripheral Pin 32K XN/IO33_ (ADC, RTC/CLK, TOUCH)
14	IO25	I/O	Multiplexed I/O & Peripheral Pin IO25 (UART, ADC, DAC, RTC/CLK)
15	IO26	I/O	Multiplexed I/O & Peripheral Pin IO26 (UART, ADC, DAC, RTC/CLK)
16	IO27	I/O	Multiplexed I/O & Peripheral Pin IO27 (ADC, RTC/CLK, TOUCH)
17	MTMS/IO14	I/O	Multiplexed I/O & Peripheral Pin MTMS/IO14 (ADC, SWD/JTAG, RTC/CLK, TOUCH)
18	MTDI/IO12	I/O	Multiplexed I/O & Peripheral Pin MTDI/IO12 (ADC, SWD/JTAG, RTC/CLK, TOUCH)
19	VDD3P3_RTC	Power	Power Supply Input (VDD3P3_RTC — 3.3V VDD3P3 (3.0V ~ 3.6V))
20	MTCK/IO13	I/O	Multiplexed I/O & Peripheral Pin MTCK/IO13 (ADC, SWD/JTAG, RTC/CLK, TOUCH)
21	MTDO/IO15	I/O	Multiplexed I/O & Peripheral Pin MTDO/IO15 (ADC, SWD/JTAG, RTC/CLK, TOUCH)
22	IO2	I/O	Multiplexed I/O & Peripheral Pin IO2 (ADC, RTC/CLK, TOUCH)
23	IO0	I/O	Multiplexed I/O & Peripheral Pin IO0 (ADC, RTC/CLK, TOUCH)
24	IO4	I/O	Multiplexed I/O & Peripheral Pin IO4 (ADC, RTC/CLK, TOUCH)
25	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
26	VDD_SDIO	Power	Power Supply Input (VDD_SDIO — 3.3V VDD3P3 (3.0V ~ 3.6V))
27	IO20	I/O	Multiplexed I/O & Peripheral Pin IO20 (General)
28	SD2/IO9	I/O	Multiplexed I/O & Peripheral Pin SD2/IO9 (UART)
29	SD3/IO10	I/O	Multiplexed I/O & Peripheral Pin SD3/IO10 (UART)
30	CMD/IO11	I/O	Multiplexed I/O & Peripheral Pin CMD/IO11 (General)
31	CLK/IO6	I/O	Multiplexed I/O & Peripheral Pin CLK/IO6 (General)
32	SD0/IO7	I/O	Multiplexed I/O & Peripheral Pin SD0/IO7 (General)
33	SD1/IO8	I/O	Multiplexed I/O & Peripheral Pin SD1/IO8 (General)
34	IO5	I/O	Multiplexed I/O & Peripheral Pin IO5 (General)
35	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
36	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
37	VDD3P3_CPU	Power	Power Supply Input (VDD3P3_CPU — 3.3V VDD3P3 (3.0V ~ 3.6V))
38	IO19	I/O	Multiplexed I/O & Peripheral Pin IO19 (UART)
39	IO22	I/O	Multiplexed I/O & Peripheral Pin IO22 (UART)
40	U0RXD/IO3	I/O	Multiplexed I/O & Peripheral Pin U0RXD/IO3 (UART)
41	U0TXD/IO1	I/O	Multiplexed I/O & Peripheral Pin U0TXD/IO1 (UART)
42	IO21	I/O	Multiplexed I/O & Peripheral Pin IO21 (General)
43	VDDA	Power	Power Supply Input (VDDA — 3.3V VDD3P3 (3.0V ~ 3.6V))
44	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
45	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
46	VDDA	Power	Power Supply Input (VDDA — 3.3V VDD3P3 (3.0V ~ 3.6V))
47	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
48	NC	I/O	Multiplexed I/O & Peripheral Pin NC (General)
49	GND	GND	Exposed Thermal & Ground Pad (GND)

Mechanical Dimensions & Land Pattern (TFQFN-48-EP)

Extracted from Datasheet & IPC-7351B Normalized

Package Body (D × E)Nominal

7.00 × 7.00 mm

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

A=0.94mm · e=0.50mm

Pad Size (W × L)Level B

0.28 × 0.85 mm

Pins / Total PadsTopology

49P / 49Pad (QUAD_ROW)

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 (TFQFN-48-EP)

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 (TFQFN-48-EP)?

Manufactured by ESPRESSIF, the ESP32-PICO-V3 is housed in a TFQFN-48-EP package with 49 pins and a 0.50 mm lead pitch, supporting a VCC supply range of 3.0 ~ 3.6 V. Key pins include: 1 (VDDA: Power Supply Input (VDDA — 3.3V VDD3P3 (3.0V ~ 3.6V))), 2 (LNA_IN: Multiplexed I/O & Peripheral Pin LNA_IN (General)), 3 (VDDA3P3: Power Supply Input (VDDA3P3 — 3.3V VDD3P3 (3.0V ~ 3.6V))), 4 (VDDA3P3: Power Supply Input (VDDA3P3 — 3.3V VDD3P3 (3.0V ~ 3.6V))), 5 (SENSOR VP/I36_: Multiplexed I/O & Peripheral Pin SENSOR VP/I36_ (ADC, RTC/CLK)), 6 (SENSOR CAPP/I37_: Multiplexed I/O & Peripheral Pin SENSOR CAPP/I37_ (ADC, RTC/CLK)).

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

Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), ESP32-PICO-V3 (TFQFN-48-EP) has a nominal body envelope of 7.00 × 7.00 mm, pitch e = 0.50 mm, and 49 copper pads plus a central exposed thermal pad (EPAD) of 5.10 × 5.10 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-PICO-V3?

You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for ESP32-PICO-V3 (ESPRESSIF, TFQFN-48-EP) 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 (49 pins) & ESP32-PICO Family VariantsExpand static table

Pin #	Signal Name	Electrical Type	Functional Description & Design Notes
1	VDDA	Power_In	Primary positive power supply input (VDDA) operating in the 3.3V VDD3P3 (3.0V ~ 3.6V) domain (Max rating: 3.6V).
2	LNA_IN	RF_50Ohm	Signal terminal LNA_IN (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: LNA_IN. Supported peripheral buses: General.
3	VDDA3P3	Power_In	Primary positive power supply input (VDDA3P3) operating in the 3.3V VDD3P3 (3.0V ~ 3.6V) domain (Max rating: 3.6V).
4	VDDA3P3	Power_In	Primary positive power supply input (VDDA3P3) operating in the 3.3V VDD3P3 (3.0V ~ 3.6V) domain (Max rating: 3.6V).
5	SENSOR VP/I36_	Digital_IO	Signal terminal SENSOR VP/I36_ (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO36, ADC1_CH0, RTC_GPIO0. Supported peripheral buses: ADC, RTC/CLK.
6	SENSOR CAPP/I37_	Digital_IO	Signal terminal SENSOR CAPP/I37_ (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO37, ADC1_CH1, RTC_GPIO1. Supported peripheral buses: ADC, RTC/CLK.
7	SENSOR CAPN/I38_	Digital_IO	Signal terminal SENSOR CAPN/I38_ (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO38, ADC1_CH2, RTC_GPIO2. Supported peripheral buses: ADC, RTC/CLK.
8	SENSOR VN/I39_	Digital_IO	Signal terminal SENSOR VN/I39_ (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO39, ADC1_CH3, RTC_GPIO3. Supported peripheral buses: ADC, RTC/CLK.
9	EN	Digital_IO	Chip enable and power-on reset control input (EN): High enables the SoC; Low powers down the chip into reset.
10	VDET 1/I34_	Digital_IO	Signal terminal VDET 1/I34_ (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: VDET 1/I34_. Supported peripheral buses: ADC.
11	VDET 2/I35_	Digital_IO	Signal terminal VDET 2/I35_ (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: VDET 2/I35_. Supported peripheral buses: ADC.
12	32K XP/IO32_	Digital_IO	Signal terminal 32K XP/IO32_ (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: ADC1_CH4, TOUCH9, RTC_GPIO9. Supported peripheral buses: ADC, RTC/CLK, TOUCH.
13	32K XN/IO33_	Digital_IO	Signal terminal 32K XN/IO33_ (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: ADC1_CH5, TOUCH8, RTC_GPIO8. Supported peripheral buses: ADC, RTC/CLK, TOUCH.
14	IO25	Digital_IO	Signal terminal IO25 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO25, ADC2_CH8, RTC_GPIO6. Supported peripheral buses: UART, ADC, DAC, RTC/CLK.
15	IO26	Digital_IO	Signal terminal IO26 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO26, ADC2_CH9, RTC_GPIO7. Supported peripheral buses: UART, ADC, DAC, RTC/CLK.
16	IO27	Digital_IO	Signal terminal IO27 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO27, ADC2_CH7, TOUCH7, RTC_GPIO17. Supported peripheral buses: ADC, RTC/CLK, TOUCH.
17	MTMS/IO14	Digital_IO	Signal terminal MTMS/IO14 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: ADC2_CH6, TOUCH6. Supported peripheral buses: ADC, SWD/JTAG, RTC/CLK, TOUCH.
18	MTDI/IO12	Digital_IO	Signal terminal MTDI/IO12 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: ADC2_CH5, TOUCH5, RTC_GPIO15. Supported peripheral buses: ADC, SWD/JTAG, RTC/CLK, TOUCH.
19	VDD3P3_RTC	Power_In	Primary positive power supply input (VDD3P3_RTC) operating in the 3.3V VDD3P3 (3.0V ~ 3.6V) domain (Max rating: 3.6V).
20	MTCK/IO13	Digital_IO	Signal terminal MTCK/IO13 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: ADC2_CH4, TOUCH4, RTC_GPIO14. Supported peripheral buses: ADC, SWD/JTAG, RTC/CLK, TOUCH.
21	MTDO/IO15	Digital_IO	Signal terminal MTDO/IO15 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: ADC2_CH3, TOUCH3. Supported peripheral buses: ADC, SWD/JTAG, RTC/CLK, TOUCH.
22	IO2	Digital_IO	Signal terminal IO2 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: ADC2_CH2, TOUCH2. Supported peripheral buses: ADC, RTC/CLK, TOUCH.
23	IO0	Digital_IO	Signal terminal IO0 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: ADC2_CH1, TOUCH1. Supported peripheral buses: ADC, RTC/CLK, TOUCH.
24	IO4	Digital_IO	Signal terminal IO4 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: ADC2_CH0, TOUCH0. Supported peripheral buses: ADC, RTC/CLK, TOUCH.
25	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
26	VDD_SDIO	Power_In	Primary positive power supply input (VDD_SDIO) operating in the 3.3V VDD3P3 (3.0V ~ 3.6V) domain (Max rating: 3.6V).
27	IO20	Digital_IO	Signal terminal IO20 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO20. Supported peripheral buses: General.
28	SD2/IO9	Digital_IO	Signal terminal SD2/IO9 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO9, U1RXD. Supported peripheral buses: UART.
29	SD3/IO10	Digital_IO	Signal terminal SD3/IO10 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO10, U1TXD. Supported peripheral buses: UART.
30	CMD/IO11	Digital_IO	Signal terminal CMD/IO11 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: CMD/IO11. Supported peripheral buses: General.
31	CLK/IO6	Digital_IO	Signal terminal CLK/IO6 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: CLK/IO6. Supported peripheral buses: General.
32	SD0/IO7	Digital_IO	Signal terminal SD0/IO7 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO7, U2RTS. Supported peripheral buses: General.
33	SD1/IO8	Digital_IO	Signal terminal SD1/IO8 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO8, U2CTS. Supported peripheral buses: General.
34	IO5	Digital_IO	Signal terminal IO5 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO5. 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	VDD3P3_CPU	Power_In	Primary positive power supply input (VDD3P3_CPU) operating in the 3.3V VDD3P3 (3.0V ~ 3.6V) domain (Max rating: 3.6V).
38	IO19	Digital_IO	Signal terminal IO19 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO19, U0CTS. Supported peripheral buses: UART.
39	IO22	Digital_IO	Signal terminal IO22 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO22, U0RTS. Supported peripheral buses: UART.
40	U0RXD/IO3	Digital_IO	Signal terminal U0RXD/IO3 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO3, U0RXD, CLK_OUT2. Supported peripheral buses: UART.
41	U0TXD/IO1	Digital_IO	Signal terminal U0TXD/IO1 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO1, U0TXD, CLK_OUT3. Supported peripheral buses: UART.
42	IO21	Digital_IO	Signal terminal IO21 (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: GPIO21. Supported peripheral buses: General.
43	VDDA	Power_In	Primary positive power supply input (VDDA) operating in the 3.3V VDD3P3 (3.0V ~ 3.6V) domain (Max rating: 3.6V).
44	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
45	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. Supported peripheral buses: General.
46	VDDA	Power_In	Primary positive power supply input (VDDA) operating in the 3.3V VDD3P3 (3.0V ~ 3.6V) domain (Max rating: 3.6V).
47	NC	NC	Signal terminal NC (I/O, 3.3V VDD3P3 (3.0V ~ 3.6V) domain). Multiplexed alternate functions: NC. 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.

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ESP32-PICO-V3

Synchronized Pinout (Symbol / 2D / 3D) (49/49)

Live Embedded Datasheet PDF & Technical Drawing Gallery (6 Standard Drawings + 7 Extracted Figures)

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

5-Point Standards Verification

Hardware Verification & Community Engineering Reviews