DC 5 V 3‑Wire 40×40×10 mm Cooling Fan

This 40×40×10 mm DC 5V cooling fan is a compact and efficient brushless fan designed for electronics cooling in small enclosures and DIY projects. Operating at 5 volts with a 3-wire interface (power, ground, and signal/tachometer), it is suitable for active airflow in devices such as Raspberry Pi enclosures, 3D printers, routers, and other low-voltage systems. Despite its small size, the fan delivers reliable airflow and operates with low noise. The third wire enables speed monitoring or control depending on your system's capability. Built with a long-life sleeve or ball bearing (depending on model), this fan ensures consistent operation over extended periods.

Key Features:

• Operates at DC 5V with low power consumption
• 3-wire configuration (V+, GND, signal/tach) for RPM feedback
• Compact 40 mm × 40 mm × 10 mm size ideal for tight spaces
• Long-lasting brushless motor for stable airflow
• Quiet operation suitable for noise-sensitive applications
• Versatile use in electronics cooling, enclosures, and robotics