W5500 In Stock

W5500 Hardwired TCP/IP Ethernet Controller

Name: W5500 Hardwired TCP/IP Ethernet Controller
Brand: WIZnet
SKU: W5500

W5500 is WIZnet's flagship Ethernet controller with a unique hardwired TCP/IP stack, enabling direct network connectivity without software TCP/IP implementation. Connects to the host MCU via SPI, features 32KB TX/RX buffer, supports up to 8 sockets — the most widely adopted Ethernet chip in the Arduino/Raspberry Pi ecosystem.

TCP/IP Stack

Hardwired

Host Interface

SPI (up to 80 MHz)

Buffer Memory

32KB

Sockets

Features

Hardwired TCP/IP stack (no software required)
SPI interface (up to 80 MHz)
Embedded 32KB TX/RX buffer
Supports 8 independent sockets
TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE
10/100M full/half-duplex Ethernet
Embedded PHY (no external PHY required)
3.3V I/O with 5V tolerance

Specifications

TCP/IP Stack	Hardwired
Host Interface	SPI (up to 80 MHz)
Buffer Memory	32KB
Sockets	8
Protocols	TCP, UDP, IPv4, ICMP, ARP, IGMP, PPPoE
Speed	10/100 Mbps
PHY	Integrated
Supply Voltage	3.3V
Package	LQFP48

Applications

EthernetTCP/IPSPIIoTArduinoEmbedded

Order Info

Stock, pricing, lead time, and samples for W5500 — we reply within one business day.

Request Quote Request datasheet / sample Datasheet ↗

WIZnet

Korea

Hardwired TCP/IP Ethernet ICs & PoE Modules

View all WIZnet products → Official WIZnet site

W5500 replaces these parts

Engineers use W5500 as a second source or alternative for the parts below. Open each for compatibility notes (drop-in / software / alternative) and an RFQ.

ENC28J60 Functional alternative

Microchip

View cross-reference →

Selection guides & comparisons

Guide

Add Wired Ethernet to an MCU: SPI-to-Ethernet Selection Guide

Comparison

W5500 vs ENC28J60 vs DM9051: SPI Ethernet Chip Comparison

W5500 — Frequently Asked Questions

Where can I buy W5500?

JLink Technology is an authorized WIZnet distributor serving Taiwan, Mainland China, and Hong Kong. Submit an RFQ for W5500 and we will respond with pricing and lead time within one business day.

Is W5500 in stock?

Stock and lead time for W5500 vary by quantity. Send us your required quantity via the RFQ form and we will confirm current availability and delivery schedule.

Can I get the W5500 datasheet and samples?

Yes. As an authorized WIZnet distributor, JLink Technology can provide the official W5500 datasheet, samples, and engineering support. Contact us to request them.

What is the minimum order quantity for W5500?

We support orders from prototype samples to mass production. Tell us your target volume in the RFQ and we will quote accordingly.

Is there a pin-compatible alternative or second source for W5500?

Tell us the part you need to replace and your application. As a multi-line authorized distributor, JLink Technology can suggest a verified cross-reference or second source related to W5500 where one exists, and quote pricing, stock, and lead time.

Related Products

W55RP20 In Stock

W55RP20 RP2040 + W5500 Ethernet SiP

The W55RP20 is a WIZnet SiP integrating a Raspberry Pi RP2040 (dual Cortex-M0+) with the W5500 hardwired TCP/IP Ethernet controller in a single QFN68 package. With 2MB flash, 264KB SRAM, a hardwired TCP/IPv4 stack (8 sockets, 32KB/32KB TX/RX buffer), and an embedded 10/100 PHY, it builds compact industrial-Ethernet nodes with no external Ethernet chip. Programmable in C/C++ or MicroPython, with SWD debug.

Ethernet SiPRP2040W5500

Details Request Quote

W6300 In Stock

W6300 IPv4/IPv6 Hardwired TCP/IP Ethernet Controller

The W6300 is WIZnet's first Ethernet controller with a dual IPv4/IPv6 hardwired TCP/IP stack, using a high-speed QSPI (single/dual/quad) host interface, a system clock up to 150MHz, and throughput up to ~90Mbps. With an embedded 10/100 PHY (auto-negotiation, Auto-MDIX), 8 hardware sockets, a 64KB buffer, and ICMPv6/WOL support, in 48-LQFP/QFN at 3.3V with 5V-tolerant I/O, it suits IPv6-ready industrial and IoT devices.

Ethernet ControllerIPv6TCP/IP

Details Request Quote

WIZ550io In Stock

WIZ550io Auto-Configurable W5500 Ethernet Module

The WIZ550io is a WIZnet auto-configurable Ethernet module based on the W5500, with a pre-programmed unique MAC address, integrated PHY, transformer, and RJ45 (MAGJACK), and self-initialization on power-up (default IP 192.168.1.2). It connects to a host over SPI (up to 80MHz), with 8 hardware sockets and a 32KB buffer — plug-and-play wired networking for any MCU.

Ethernet ModuleW5500TCP/IP

Details Request Quote