Wiznet W5500 Ethernet network module RJ-45 WoL SPI TCP/IP UDP 2.54 mm STM32

W5500 Ethernet RJ-45 SPI TCP/IP module for Arduino, ESP32, ESP8266, Raspberry Pi

The Ethernet W5500 RJ-45 network module is a compact expansion for microcontrollers such as Arduino, STM32, ESP32, ESP8266, and Raspberry Pi. The faster, more capable Wiznet W5500 chip is a direct successor to the popular W5100.

The module includes a built-in hardware TCP/IP and UDP stack. It is ideal for projects where Wi-Fi is insufficient or simply unstable. The chip is fully compatible with the Wiznet Arduino IDE library.

Key technical specifications

• Supply voltage: 3.3 V, capable of up to 200 mA
• Current draw: 120 mA
• Chip: W5500
• Interface: SPI
• Protocol support: TCP/IP, UDP, ICMP, IGMP, ARP, PPoE
• Wake feature: Wake on LAN over UDP
• Socket support: up to 8 simultaneous sockets
• PHY standard (Ethernet physical layer): 10BaseT/100BaseTX (10/100 Mb)
• Power management: Power Down mode
• Dimensions: 26 x 23 x 16 mm (without pins)
• Pin pitch: soldered headers 2.54 mm - ideal for breadboard use

Example applications

• Home automation systems requiring stable wired connectivity
• Industrial measurement and data logging systems
• Microcontroller-based web servers
• IoT gateways and remote control systems
• Educational projects and breadboard prototypes

Benefits

• High network connection stability compared with wireless communication
• Reduced load on the microcontroller thanks to hardware network stack handling
• Easy integration with popular platforms via the universal SPI interface
• Fast prototyping thanks to soldered headers with standard pitch
• Smooth operation with ready-made libraries in Arduino IDE