Espressif Part Number Reference

MPN Structure Overview

Espressif produces WiFi/Bluetooth SoCs and modules:

• ESP8266: Legacy WiFi SoC
• ESP32: WiFi + Bluetooth SoC
• ESP32-S2/S3: Enhanced ESP32 variants
• ESP32-C3/C6: RISC-V based variants
• WROOM/WROVER: Module families

---

SoC Part Number Format

ESP[Series]-[Variant][Package]
  |    |       |        |
  |    |       |        +-- Package suffix (optional)
  |    |       +-- Variant (D0WD, S2, S3, C3, etc.)
  |    +-- Series (8266, 32)
  +-- Espressif prefix

Module Part Number Format

ESP32-[FormFactor]-[Revision][-U][-Memory]
  |        |            |      |      |
  |        |            |      |      +-- Memory config (N4, N8, R2, R8)
  |        |            |      +-- External antenna (U suffix)
  |        |            +-- Revision (E, B, etc.)
  |        +-- Form factor (WROOM, WROVER, MINI, PICO)
  +-- SoC type

Example Decoding

ESP32-S3-WROOM-1-N16R8
  |   |    |   | |  |
  |   |    |   | |  +-- R8 = 8MB PSRAM
  |   |    |   | +-- N16 = 16MB Flash
  |   |    |   +-- Revision 1
  |   |    +-- WROOM form factor
  |   +-- S3 variant
  +-- ESP32 series

---

SoC Variants

ESP8266 Series

SoC	Core	WiFi	BT	Notes
ESP8266EX	Tensilica	802.11 b/g/n	No	Original
ESP8285	Tensilica	802.11 b/g/n	No	With 1MB flash

ESP32 Original

SoC	Core	WiFi	BT
ESP32-D0WD	Dual LX6	802.11 b/g/n	BT 4.2
ESP32-S0WD	Single LX6	802.11 b/g/n	BT 4.2
ESP32-PICO-D4	Dual LX6	802.11 b/g/n	BT 4.2

ESP32-S Series

SoC	Core	WiFi	BT
ESP32-S2	Single LX7	802.11 b/g/n	No
ESP32-S3	Dual LX7	802.11 b/g/n	BT 5.0 LE

ESP32-C Series (RISC-V)

SoC	Core	WiFi	BT
ESP32-C2	RISC-V	802.11 b/g/n	BT 5.0 LE
ESP32-C3	RISC-V	802.11 b/g/n	BT 5.0 LE
ESP32-C6	RISC-V	WiFi 6	BT 5.0 LE

---

Memory Configuration Suffixes

Flash (N/H prefix)

Suffix	Size	Temperature
N4	4 MB	-40 to +85C
N8	8 MB	-40 to +85C
N16	16 MB	-40 to +85C
H4	4 MB	-40 to +105C

PSRAM (R suffix)

Suffix	Size	Interface
R2	2 MB	Quad SPI
R8	8 MB	Octal SPI

---

Module Form Factors

Form Factor	Description	Size
WROOM	Standard, PCB antenna	18x25mm
WROVER	WROOM + PSRAM (legacy)	18x31mm
MINI	Compact, PCB antenna	13x16mm
PICO	Ultra-compact SiP	7x7mm

---

Supported ComponentTypes

ComponentType.MICROCONTROLLER
ComponentType.MICROCONTROLLER_ESPRESSIF
ComponentType.MCU_ESPRESSIF
ComponentType.ESP8266_SOC
ComponentType.ESP32_SOC
ComponentType.ESP32_S2_SOC
ComponentType.ESP32_S3_SOC
ComponentType.ESP32_C3_SOC
ComponentType.ESP32_WROOM_MODULE
ComponentType.ESP32_WROVER_MODULE

---

Known Handler Issues

1. Pattern Order Issues

Pattern

^ESP32.*

may match before more specific patterns like

^ESP32-S3.*

.

2. extractSeries WROOM Conflict

if (upperMpn.contains("WROOM")) {
    if (upperMpn.startsWith("ESP32")) return "ESP32-WROOM";
    return "ESP-WROOM";
}

This means

ESP32-S3-WROOM-1

returns

ESP32-WROOM

instead of

ESP32-S3

.

3. Missing C6/H2 Types

ComponentType enum doesn't include ESP32_C6_SOC or ESP32_H2_SOC.

---

Test Patterns

Valid SoC MPNs

ESP8266EX
ESP32-D0WDQ6
ESP32-S2
ESP32-S3
ESP32-C3

Valid Module MPNs

ESP32-WROOM-32E
ESP32-WROVER-E
ESP32-S3-WROOM-1-N16R8
ESP32-C3-MINI-1-N4
ESP32-C3-MINI-1U-N4

---

Related Files

• Handler:

  manufacturers/EspressifHandler.java

• Component types:

  EspressifComponentType.java

• Test:

  handlers/EspressifHandlerTest.java

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