Replacement Options for U1

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3:26

Determining replacement mode.

Finding pin-compatible ESP32 modules.

Utilizing the datasheet tool.

Clarifying replacement requirements.

Accessing knowledge base.

Reviewing the bill of materials.

Searching for components.

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Finished searching for components.

Looking for "module dimensions and footprint" in esp32-wroom-32d_esp32-wroom-32u_datasheet_en.pdf

Looking for "pin definitions table" in esp32-wroom-32d_esp32-wroom-32u_datasheet_en.pdf

Looking for "module dimensions mechanical drawing footprint land pattern" in esp32-wroom-32d_esp32-wroom-32u_datasheet_en.pdf

Looking for "pin definitions table pin layout" in esp32-wroom-32d_esp32-wroom-32u_datasheet_en.pdf

Looking for "footprint compatible with ESP32-WROOM-32D or ESP32-WROOM-32U" in esp32-wroom-32e_esp32-wroom-32ue_datasheet_en.pdf

Looking for "module dimensions and footprint land pattern" in esp32-wroom-32e_esp32-wroom-32ue_datasheet_en.pdf

Looking for "antenna keepout PCB design recommendations" in esp32-wroom-32e_esp32-wroom-32ue_datasheet_en.pdf

Crafting queries for replacements.

Here are safe, drop‑in replacements for U1 (ESP32‑WROOM‑32D). Per the ESP32‑WROOM‑32E/32UE datasheet: “ESP32‑WROOM‑32E / ESP32‑WROOM‑32UE modules use ‘Type 3’ footprints and can be replaced with ESP32‑WROOM‑D / ESP32‑WROOM‑U modules.” This confirms footprint/pin compatibility.
Replacement options for U1

Table

PartAntennaDrop‑in with ESP32‑WROOM‑32D?NotesDatasheet
ESP32‑WROOM‑32EOn‑module PCB traceYes (Type 3 footprint)Direct internal‑antenna successor to 32D; no schematic or footprint change needed.PDF
ESP32‑WROOM‑32UE‑N16External (u.FL)Yes (Type 3 footprint)For external/chip antenna designs; keep external antenna and keep‑out in mind.PDF
ESP32‑WROOM‑32UE‑N8External (u.FL)Yes (Type 3 footprint)Same as above with different flash variant.PDF
ESP32‑S3‑WROOM‑1‑N16R8On‑module PCB traceNoNewer MCU family; requires schematic and footprint changes.PDF
Notes
  • Compatibility source: ESP32‑WROOM‑32E/32UE datasheet states they can replace ESP32‑WROOM‑32D/32U on “Type 3” footprints.
  • If you want external antenna performance, choose a 32UE option; otherwise, 32E is the simplest drop‑in.
Which direction do you prefer: internal antenna (ESP32‑WROOM‑32E) or external antenna (ESP32‑WROOM‑32UE‑N16)?
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  • Ground
    Ground
    A common return path for electric current. Commonly known as ground.
    jharwinbarrozo
    20.5M
  • Net Portal
    Net Portal
    Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
    jharwinbarrozo
    43.0M
  • Power Net Portal
    Power Net Portal
    Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
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    11.4M
  • Generic Resistor
    Generic Resistor
    A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Generic Capacitor
    Generic Capacitor
    A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibrary
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  • Generic Inductor
    Generic Inductor
    A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
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  • Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
    natarius
  • RMCF0805JT47K0
    RMCF0805JT47K0
    General Purpose Thick Film Standard Power and High-Power Chip Resistor 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film Features: - RMCF – standard power ratings - RMCP – high power ratings - Nickel barrier terminations standard - Power derating from 100% at 70ºC to zero at +155ºC - RoHS compliant, REACH compliant, and halogen free - AEC-Q200 compliant
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    1.2M
  • 875105359001
    875105359001
    10 µF 16 V Aluminum - Polymer Capacitors Radial, Can - SMD 30mOhm 2000 Hrs @ 105°C #commonpartslibrary #capacitor #aluminumpolymer #radialcan
    jharwinbarrozo
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  • CTL1206FYW1T
    CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric)
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    1.1M

EcoCore Refboard

EcoCore Refboard thumbnail
EcoCore ESP32 Reference Board – Final Net Mapping, Protection Ratings, 4-Layer PCB Prep, and Integrated USB-C Programming Interface with USB-UART Bridge, CC Pull-Downs, Low-Capacitance ESD Protection, and Isolated USB 5V / 5V Actuator / 12V Rails (with Verified DRC/ERC Status and Pre-Production Layout Checklist)

Properties

Diagram



  
    
  
  
    
  


















"ESP32 MCU Domain"
"Power/Protection Domain"
"Relay Control Domain"
"PWM I/O Headers"
"DHT22 Connectors"
"I2C Expansion Header"
"Programming/Test Pad Domain"
"Status LED Domain"
"USB Interface Domain"

12V = 3 mm, 5V = 1 mm, 3V3 = 0.8 mm

1

mm

Near ESP32, away from relay/12V zone

EN, IO0, PWM1, PWM2, CC1, CC2, DHT1_DATA, DHT2_DATA

Contains U1, J8, U5, J6, J7, D7, R15, R16, USB test points TP_DP/TP_DN/TP_CC1/TP_CC2, TP_3V3, TP_5V, TP_GND, D4–D6, and associated passives

0.8

mm

40.0 mm × 25.0 mm

TX0, RX0

Clear outlines and labels for USB-C receptacle, CC, D+/D– test pads

Four non-plated 3.0 mm holes (TP_DP, TP_DN, TP_CC1, TP_CC2 groups) used as combined mounting and USB probe access

Standard 4 Layer: Top (signal), Layer 2 (ground plane), Layer 3 (power pours), Bottom (signal)

USB-C and BOOT/RESET header near ESP32, keep clearance from relay/12V zone; use existing 3.0 mm non-plated holes (TP_DP/TP_DN/TP_CC1/TP_CC2) as mechanical and probe access features

Four non-plated 3.0 mm holes (TP_DP, TP_DN, TP_CC1, TP_CC2) used as mechanical mounting and USB probe access features

Contains F1, D1–D3, D8–D9, U2, U3, U4, J1–J3, J4–J5, TP_12V, bulk/decoupling capacitors C1–C4, and relay status LEDs and resistors

D+, D-

3

mm

GND

Pricing & Availability

Distributor

Qty 1

Arrow

$10.19–$16.66

Digi-Key

$16.84–$22.68

LCSC

$16.03–$18.90

Mouser

$20.98–$21.86

TME

$3.94

Verical

$9.86–$94.37

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