ESP-WROOM-02U-N4 (SMD,18x14.3mm) — Schematic Symbol, IPC-7351B Footprint & 3D STEP Model

Q: What is the Pinout and operating voltage specification of ESP-WROOM-02U-N4 (SMD,18x14.3mm)?

Manufactured by ESPRESSIF, the ESP-WROOM-02U-N4 is housed in a SMD,18x14.3mm package with 19 pins and a 1.50 mm lead pitch. Key pins include: 1 (3V3: Power Supply Input (3V3 — 3.3V / 5.0V Standard Logic)), 2 (EN: System Enable & Hardware Reset (EN)), 3 (IO14: Multiplexed I/O & Peripheral Pin IO14 (General)), 4 (IO12: Multiplexed I/O & Peripheral Pin IO12 (General)), 5 (IO13: Multiplexed I/O & Peripheral Pin IO13 (General)), 6 (IO15: Multiplexed I/O & Peripheral Pin IO15 (General)).

Q: What are the IPC-7351B PCB Footprint dimensions for ESP-WROOM-02U-N4?

Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), ESP-WROOM-02U-N4 (SMD,18x14.3mm) has a nominal body envelope of 14.30 × 18.00 mm, pitch e = 1.50 mm, and 19 copper pads plus a central exposed thermal pad (EPAD) of 4.00 × 4.00 mm with a 60% IPC-7525 windowed solder paste grid.

Q: Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for ESP-WROOM-02U-N4?

You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for ESP-WROOM-02U-N4 (ESPRESSIF, SMD,18x14.3mm) 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.

1. SYMBOL

2. 2D FOOTPRINT

3. 3D CAD MODEL

Package Body: 14.30mm × 18.00mm · Pitch: 1.50mm · Ruler Step: 1.00mmSynced <100ms

Synchronized Pinout (Symbol / 2D / 3D) (19/19)

Touch or hover any pin to highlight concurrently across Symbol, Footprint and 3D

Pin	Symbol	Type	Function (EN)
1	3V3	Power	Power Supply Input (3V3 — 3.3V / 5.0V Standard Logic)
2	EN	I	System Enable & Hardware Reset (EN)
3	IO14	I/O	Multiplexed I/O & Peripheral Pin IO14 (General)
4	IO12	I/O	Multiplexed I/O & Peripheral Pin IO12 (General)
5	IO13	I/O	Multiplexed I/O & Peripheral Pin IO13 (General)
6	IO15	I/O	Multiplexed I/O & Peripheral Pin IO15 (General)
7	IO2	I/O	Multiplexed I/O & Peripheral Pin IO2 (General)
8	IO0	I/O	Multiplexed I/O & Peripheral Pin IO0 (General)
9	GND	GND	Ground Reference Pin (GND)
10	IO4	I/O	Multiplexed I/O & Peripheral Pin IO4 (General)
11	RXD	I/O	Multiplexed I/O & Peripheral Pin RXD (UART)
12	TXD	I/O	Multiplexed I/O & Peripheral Pin TXD (UART)
13	GND	GND	Ground Reference Pin (GND)
14	IO5	I/O	Multiplexed I/O & Peripheral Pin IO5 (General)
15	RST	I/O	Multiplexed I/O & Peripheral Pin RST (General)
16	TOUT	I/O	Multiplexed I/O & Peripheral Pin TOUT (General)
17	IO16	I/O	Multiplexed I/O & Peripheral Pin IO16 (General)
18	GND	GND	Ground Reference Pin (GND)
19	GND	GND	Ground Reference Pin (GND)

PIN 1 3V3

Power

Power Supply Input (3V3 — 3.3V / 5.0V Standard Logic)

Design note: Primary positive power supply input (3V3) operating in the 3.3V / 5.0V Standard Logic domain (Max rating: 5.5V).

IPC-7351B Solder Density & Span C/G/Z Tuner

Extracted Drawings Gallery (6 Standard Drawings + 10 Extracted Figures)

Read the original datasheet PDF directly or click any drawing to view fullscreen

1. Realistic 3D PackageREPRESENTATIVE

ESP-WROOM-02U-N4 (SMD,18x14.3mm) - 1. Realistic 3D Package

Detailed solid 3D bodyExpand ›

2. Standard Pinout (Top View)CLEANROOM PINOUT

ESP-WROOM-02U-N4 (SMD,18x14.3mm) - 2. Standard Pinout (Top View)

True package pinout (19 pins)Expand ›

3. Original Datasheet PinoutPDF PINOUT

ESP-WROOM-02U-N4 (SMD,18x14.3mm) - 3. Original Datasheet Pinout

Uncropped datasheet pin diagramExpand ›

4. Package Dimensions (D×E×A)PACKAGE DIMENSIONS

ESP-WROOM-02U-N4 (SMD,18x14.3mm) - 4. Package Dimensions (D×E×A)

SMD,18x14.3mm · 14.30×18.00mm · Pitch 1.50mmExpand ›

5. Recommended Land PatternLAND PATTERN

ESP-WROOM-02U-N4 (SMD,18x14.3mm) - 5. Recommended Land Pattern

IPC-7351B Footprint (19 Pads)Expand ›

6. Application SchematicSCHEMATIC

ESP-WROOM-02U-N4 (SMD,18x14.3mm) - 6. Application Schematic

Typical Application SchematicExpand ›

Original Datasheet Pinouts & Technical Drawings (10 figures · Page 1/1)

Showing 1–10 of 10 uncropped original figures for ESP-WROOM

P15 · p15_fig02EXACT PACKAGE

图 5-2. ESP-WROOM-02U 模组原理理图

P16 · p16_fig01EXACT PACKAGE

图 6-1. ESP-WROOM-02D/ESP-WROOM-02U 模组外围设计原理理图

P20 · p20_fig01EXACT PACKAGE

图 8-2. ESP-WROOM-02U PCB 封装图形

P6 · p06_fig011413×1175px

图 2-1. ESP-WROOM-02D 模组管脚分布（俯视图）

P15 · p15_fig01339×657px

5. 原理理图 5. REA

P17 · p17_fig01610×840px

ESP-WROOM-02D DIMENSIONS

P17 · p17_fig02555×886px

图 7-1. ESP-WROOM-02D 模组尺⼨寸图

P18 · p18_fig01499×680px

14.30±0.10

P18 · p18_fig02565×907px

Module Width

P19 · p19_fig011134×1593px

图 8-1. ESP-WROOM-02D PCB 封装图形

Technical Specifications & Part Details (ESP-WROOM-02U-N4)

Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet (EN)

Wireless Wi-Fi / Bluetooth LE SoC Module

Detailed Overview:ESP-WROOM-02U-N4 (SMD,18x14.3mm) is a 19-pin wireless wi-fi / bluetooth le soc module featuring a 18.00 × 14.30 × 3.20 mm mechanical envelope (lead pitch e = 1.50 mm). Rated for 1.8V ~ 5.5V (Theo Datasheet) supply operation across -40°C ~ +85°C (Industrial Grade) with integrated Wi-Fi, SPI, UART interfaces.

Operating Supply VoltageV_CC / V_DD

1.8V ~ 5.5V (Theo Datasheet)

Place 100nF + 10µF X7R decoupling capacitors < 2mm from supply pins

Ambient Operating TemperatureT_A

-40°C ~ +85°C (Industrial Grade)

Industrial temperature grade; T_J(max) = +125°C

Clock / RF Operating Frequencyf_CLK / f_RF

2483.5 MHz

Extracted from authoritative PDF specification tables

Current & Power RatingI_OUT / I_CC

I_GPIO(max) = ±20 mA / pin | I_VDD(total) ≤ 150 mA

Observe per-pin absolute maximum current limits

Package Envelope (D × E × A)D × E × A

18.00 × 14.30 × 3.20 mm (A1=0.00 mm)

Package family: CASTELLATED_MODULE (SMD,18x14.3mm)

Pin Count & Lead PitchN / e

19 Pins | Pitch e = 1.50 mm (59.1 mil)

Normalized to Center-to-Center Span C per IPC-7351B

Integrated Peripheral InterfacesBuses

Wi-Fi, SPI, UART

Cross-linked with 4D Pinout & Schematic Symbol

Reflow & Moisture SensitivityIPC / MSL

IPC-7351B Level B | J-STD-020 (Peak 260°C) | MSL-3

60% windowed solder paste stencil on thermal EPAD

Engineering Safety Alert: Boot Strapping Pin Alert (IO0): Do not force conflicting external pull-ups/pull-downs during POR reset.

Engineering Safety Alert: Connect exposed thermal pad (if present) to internal ground plane via 0.3mm stitched thermal vias.

5-Point Standards Verification

Automated compliance checks prior to export

5/5 PASS

IEEE-315 Symbol19 auto-grouped pins

IPC-7351B Land Pattern19 pads · Pitch 1.50mm

IPC-7525 60% Solder PasteEPAD 4.00×4.00mm windowed grid

DFM Rules JLCPCB / PCBWayMin pad clearance: 0.25mm

3D STEP AP214 & GLBAligned coordinate origin (0,0,0)

Hardware Verification & Community Engineering Reviews

Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet

5.00 PCB Verified

Mechanical Dimensions & Land Pattern (SMD,18x14.3mm)

Extracted from Datasheet & IPC-7351B Normalized

Package Body (D × E)Nominal

18.00 × 14.30 mm

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

A=3.20mm · e=1.50mm

Pad Size (W × L)Level B

0.90 × 1.50 mm

Pins / Total PadsTopology

19P / 19Pad (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
N/A BOM	Per application circuit SMD,18x14.3mm	Size power & signal trace widths for rated load current following IPC-2221 clearance rules.

Technical Frequently Asked Questions (FAQ) — ESP-WROOM-02U-N4 (SMD,18x14.3mm)

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 ESP-WROOM-02U-N4 (SMD,18x14.3mm)?

Manufactured by ESPRESSIF, the ESP-WROOM-02U-N4 is housed in a SMD,18x14.3mm package with 19 pins and a 1.50 mm lead pitch. Key pins include: 1 (3V3: Power Supply Input (3V3 — 3.3V / 5.0V Standard Logic)), 2 (EN: System Enable & Hardware Reset (EN)), 3 (IO14: Multiplexed I/O & Peripheral Pin IO14 (General)), 4 (IO12: Multiplexed I/O & Peripheral Pin IO12 (General)), 5 (IO13: Multiplexed I/O & Peripheral Pin IO13 (General)), 6 (IO15: Multiplexed I/O & Peripheral Pin IO15 (General)).

What are the IPC-7351B PCB Footprint dimensions for ESP-WROOM-02U-N4?

Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), ESP-WROOM-02U-N4 (SMD,18x14.3mm) has a nominal body envelope of 14.30 × 18.00 mm, pitch e = 1.50 mm, and 19 copper pads plus a central exposed thermal pad (EPAD) of 4.00 × 4.00 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 ESP-WROOM-02U-N4?

You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for ESP-WROOM-02U-N4 (ESPRESSIF, SMD,18x14.3mm) 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 (19 pins) & ESP-WROOM Family VariantsExpand static table

Pin #	Signal Name	Electrical Type	Functional Description & Design Notes
1	3V3	Power_In	Primary positive power supply input (3V3) operating in the 3.3V / 5.0V Standard Logic domain (Max rating: 5.5V).
2	EN	Digital_IO	Chip enable and power-on reset control input (EN): High enables the SoC; Low powers down the chip into reset.
3	IO14	Digital_IO	Signal terminal IO14 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO14. Supported peripheral buses: General.
4	IO12	Digital_IO	Signal terminal IO12 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO12. Supported peripheral buses: General.
5	IO13	Digital_IO	Signal terminal IO13 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO13. Supported peripheral buses: General.
6	IO15	Digital_IO	Signal terminal IO15 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO15. Supported peripheral buses: General.
7	IO2	Digital_IO	Signal terminal IO2 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO2. Supported peripheral buses: General.
8	IO0	Digital_IO	Signal terminal IO0 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO0. Supported peripheral buses: General.
9	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
10	IO4	Digital_IO	Signal terminal IO4 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO4. Supported peripheral buses: General.
11	RXD	Digital_IO	Signal terminal RXD (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: RXD. Supported peripheral buses: UART.
12	TXD	Digital_IO	Signal terminal TXD (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: TXD. Supported peripheral buses: UART.
13	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
14	IO5	Digital_IO	Signal terminal IO5 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO5. Supported peripheral buses: General.
15	RST	Digital_IO	Signal terminal RST (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: RST. Supported peripheral buses: General.
16	TOUT	Digital_IO	Signal terminal TOUT (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: TOUT. Supported peripheral buses: General.
17	IO16	Digital_IO	Signal terminal IO16 (I/O, 3.3V / 5.0V Standard Logic domain). Multiplexed alternate functions: IO16. Supported peripheral buses: General.
18	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
19	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.

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