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Small square 40 mm axial fan with black frame and transparent blades

Fans

Fans 1608KL-04W-B59Size 40 mm 12 V case fan

SKU CH-0G8F-XY4GV MPN 1608KL-04W-B59Size

A 40 mm axial case fan moves 9.5 CFM at 8500 RPM with 33 dBA noise on 12 V power

  • Compact 40 mm frame fits tight chassis
  • 12 V DC motor runs on standard headers
  • 8500 RPM delivers 9.5 CFM airflow
  • 33 dBA noise keeps operation quiet
  • 20 to 70 °C range suits harsh environments

Compact 40 mm axial fan for tight builds

The NMB-MAT 1608KL-04W-B59 is a 40 mm square DC fan designed for servers, industrial equipment and small-form-factor PCs. It runs on 12 V and draws 0.15 A for a rated power of 1.8 W. The unit suits installers who need a thin, low-power cooler in confined spaces.

9.5 CFM airflow with 69.4 Pa static pressure

At 8500 RPM the fan moves 9.5 CFM and develops 69.4 Pa of pressure, enough for restrictive heatsinks or dense chassis layouts. Headroom shrinks when ambient temperatures climb toward the 70 °C upper limit or when dust buildup adds resistance beyond the rated curve.

33 dBA noise at full speed in normal use

The motor produces 33 dBA at 8500 RPM, a level typical for 40 mm fans under load. Power draw stays at 1.8 W, so thermal contribution to the system is minimal. Operating range spans -20 °C to 70 °C, covering most indoor and rugged environments.

Points forts

  • Compact 40 mm frame fits tight chassis
  • 12 V DC motor runs on standard headers
  • 8500 RPM delivers 9.5 CFM airflow
  • 33 dBA noise keeps operation quiet
  • 20 to 70 °C range suits harsh environments

Caractéristiques

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Questions sur cet article

Will this 40 mm fan fit the same mounting holes as my existing 4020 fans?

Yes, the 40 mm frame and 20 mm thickness match the 4020 form factor, so existing mounting holes align.

How can I verify the fan runs at the rated 8500 RPM after installation?

Use BIOS or a hardware monitor to confirm the speed reads near 8500 RPM and listen for the 33 dBA noise level.

Does the box include mounting screws or a power adapter, or must I buy them separately?

The fan ships with a 12 V 3-wire lead; mounting screws and any adapters are not included and must be sourced separately.

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