---
title: "W5500 Ethernet Breakout Board from Soldered EU OSH"
url: "https://maker.wiznet.io/jakelee/resellers/w5500-ethernet-breakout-board-from-soldered-eu-osh/"
markdown_url: "https://maker.wiznet.io/jakelee/resellers/w5500-ethernet-breakout-board-from-soldered-eu-osh/md"
type: "VAR: Value-Added Reseller Products"
author: "Soldered"
author_url: "https://soldered.com/products/ethernet-controller-w5500-board?variant=62541041697117&utm_source=chatgpt.com&utm_medium=feed"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "Soldered"
original_url: "https://soldered.com/products/ethernet-controller-w5500-board?variant=62541041697117&utm_source=chatgpt.com&utm_medium=feed"
published: "2026-05-02"
language: "en"
hardware: ["WIZnet W5500"]
likes: 0
views: 361
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# W5500 Ethernet Breakout Board from Soldered EU OSH

> Soldered is a recognized embedded hardware vendor providing production-ready modules and development boards for global maker and industrial markets.

Original author: Soldered (source: https://soldered.com/products/ethernet-controller-w5500-board?variant=62541041697117&utm_source=chatgpt.com&utm_medium=feed)

## Components

- **WIZnet W5500** x 1 ([docs](https://docs.wiznet.io/Product/Chip/Ethernet/W5500))

WIZnet parts: W5500 ([Datasheet](https://docs.wiznet.io/Product/Chip/Ethernet/W5500/datasheet?utm_source=maker&utm_medium=project&utm_campaign=w5500), [product hub](https://maker.wiznet.io/products/w5500/))

## Article

## Step 1: Understanding the Hardware

The Soldered Ethernet Controller Board integrates the **WIZnet W5500**, a hardwired TCP/IP Ethernet controller designed to offload networking tasks from microcontrollers.

Key W5500 specifications:

- **8 independent hardware sockets**

- **32KB internal buffer (TX/RX)**

- **SPI interface up to 80MHz**

- **Integrated 10/100 Mbps Ethernet PHY**

This breakout board includes:

- RJ45 connector with magnetics

- Power regulation and supporting passives

- SPI interface pins for easy MCU integration

The W5500 processes:

- TCP/UDP/IP protocols

- packet retransmission

- socket state management

This eliminates the need for software stacks like **LwIP**, reducing MCU RAM usage (~30KB) and improving deterministic performance.

---

## Step 2: Software/Firmware Setup

The MCU communicates with the W5500 via SPI and initializes networking using WIZnet’s socket-based API.

![](https://maker.wiznet.io/upload/ckeditor5/575891829%5F1777695579%2Epng)

Because TCP/IP is handled in hardware, the MCU focuses only on:

- application logic

- sensor data handling

- system control

---

## Step 3: System-Level Insight (Trend & Positioning)

### 🔹 Trend — Module-Level Integration

This board represents **hardware-level integration of Ethernet complexity**, combining:

- PHY

- RJ45

- TCP/IP stack

into a reusable SPI module. It removes the need for custom Ethernet circuit design, accelerating development.

---

### 🔹 Trend — Ethernet Enablement over Wi-Fi

The breakout enables rapid transition from:

- Wi-Fi-based prototypes
  → to

- deterministic wired Ethernet systems

This is critical for:

- industrial IoT

- stable telemetry

- latency-sensitive applications

---

### 🔥 Key Insight — Prototype-to-Product Bridge

This board functions as a **bridge between prototyping and production**:

- Engineers start with breakout modules

- Validate Ethernet functionality

- Transition to:
  - custom W5500 designs
  - or integrated solutions like W55RP20

This positions the W5500 breakout as a **gateway into WIZnet ecosystem adoption**.

---

Source: https://maker.wiznet.io/jakelee/resellers/w5500-ethernet-breakout-board-from-soldered-eu-osh/