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Adafruit

· MPN: ADA6104

$11.68 |
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The largest fan in the 5V USB range, this 90mm cooling fan provides maximum airflow for electronics projects. Simply plug into any USB port for immediate coo...

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The largest fan in the 5V USB range, this 90mm cooling fan provides maximum airflow for electronics projects. Simply plug into any USB port for immediate cooling — no drivers or setup required.

The USB connector can be cut off to wire the fan directly to a 5V power source. While there's no built-in PWM or feedback pin, you can control fan speed using a motor controller, H-Bridge, or MOSFET. As an inductive load, a flyback diode is recommended to protect your circuitry.

Key Features

  • Plug-and-Play USB Power – Connect to any USB port for instant cooling
  • Direct 5V Wiring Option – Cut the USB connector to wire directly to a 5V source
  • Largest in the Range – 90mm fan delivers the most airflow of all sizes
  • Standard 25mm Depth – Common form factor compatible with most fan mounts
  • Protective Grills – Front and back grills included for safety
  • Secure Mounting – Includes screws and nuts for easy installation

Specifications

  • Voltage – 5V DC
  • Current Draw – 0.2A
  • Fan Dimensions – 90 × 90 × 25mm
  • Mounting Holes – 82 × 82mm spacing, 4.5mm diameter
  • Cable Length – Approximately 1 metre (USB-A connector)

Also Available

Ideal For

  • Cooling single-board computers and development boards
  • FPGA and motor driver thermal management
  • 3D printer electronics cooling
  • Enclosure ventilation for electronics projects

Package Contents

  • 1× 5V USB Fan (90mm)
  • 2× Protective grills (front and back)
  • 4× Mounting screws and nuts
Tip: Fans are inductive loads — use a flyback diode when switching with a MOSFET or H-Bridge to protect your circuitry.

Jargon buster

Plain-language definitions for the technical terms used above.

motor driver
An electronic circuit that lets a low-power controller switch and control a motor that needs more current than the controller pins can safely provide. Checking motor driver support matters because pumps and motors usually cannot be connected directly to a microcontroller output.
PWM
Pulse Width Modulation is a way for a digital pin to simulate variable output power by switching on and off very quickly. It matters for controlling things like LED brightness, motor speed, or servo-style signals from a microcontroller pin.

Related Tutorials

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