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Small black square 40x40x15mm 5V PWM case fan with four-pin connector

Fans

Fans ASB0405LB 40x40x15mm 5V PWM case fan

SKU CH-1WS3-PBX2G

Compact 40×40 mm square fan with 15 mm thickness and 5 V PWM control

  • 40 mm square frame fits tight server bays
  • 15 mm slim depth clears low-profile chassis
  • 5 V PWM 4-pin gives precise speed control
  • 12 A draw keeps power budget low

40×40×15 mm 5 V PWM case fan

The ASB0405LB is a 40 mm square cooling fan that runs on 5 V DC and draws 0.12 A. A four-pin PWM connector allows speed control through the motherboard or fan controller. It is designed for tight spaces in servers, small-form-factor PCs or embedded chassis where a 15 mm thick frame fits.

Ideal for compact builds with 5 V headers

This fan suits builders who need a low-profile 40 mm cooler with PWM control on a 5 V rail. It will not work for systems that require 12 V fans, larger frame sizes, higher airflow ratings or three-pin voltage control only.

Highlights

  • 40 mm square frame fits tight server bays
  • 15 mm slim depth clears low-profile chassis
  • 5 V PWM 4-pin gives precise speed control
  • 12 A draw keeps power budget low

Specifications

No published specifications for this item yet.

Questions about this item

Will the sleeve bearing need lubrication or replacement during the fan's life?

The ASB0405LB uses a sleeve bearing that cannot be relubricated; expect replacement when noise or vibration increases.

What thermal limit appears first when the fan runs continuously at 5 V and 0.12 A?

Continuous operation at the rated 5 V and 0.12 A typically hits the sleeve-bearing temperature limit before the motor winding limit.

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