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Small square 40mm 12V axial fan black plastic frame four wires

Haywards

Haywards DBTB0428B2G 40mm 12V 1A 4-pin axial fan

SKU CH-GKR6-SZJ9Q

A 40 mm axial fan with double ball bearings, 4-pin PWM control, 18 000 RPM top speed, 19.4 CFM airflow and 54 dB noise

  • TypeOther
  • 40 × 40 × 28 mm footprint fits tight chassis spaces
  • Double ball bearing rated for 70000 hours of continuous operation
  • PWM speed control with tachometer feedback enables precise thermal management
  • 4 CFM airflow at up to 18000 RPM delivers strong spot cooling
  • 54 dB noise level disclosed for informed acoustic planning

40mm 12V PWM axial fan

The Haywards DBTB0428B2G is a 40mm square axial fan built for computer-case cooling. It runs on 12 V DC with a 4-pin PWM interface that enables intelligent temperature control and speed reporting. Double ball bearings support a rated life of 70000 hours. The unit measures 40 by 40 by 28 mm and delivers up to 19.4 CFM at a maximum speed of 18000 RPM.

Suited for tight high-airflow spots.

This fan suits builders who need concentrated airflow in a small 40mm frame and can accommodate a 4-wire PWM header. It is not for systems where low acoustic output is a priority because the high rotational speed produces noticeable noise. Buyers who need a larger frame size or a lower-speed alternative should look at other models.

18000 RPM maximum speed

The single specification that decides fitment is the top speed of 18000 RPM with a tolerance of ±10%. At this speed the fan generates 54 dB of radiator noise and moves 19.4 CFM while drawing 1 A at 12 V. Verify that your motherboard or controller can drive a 4-pin PWM device at this current and that the chassis can tolerate the acoustic level.

Highlights

  • 40 × 40 × 28 mm footprint fits tight chassis spaces
  • Double ball bearing rated for 70000 hours of continuous operation
  • PWM speed control with tachometer feedback enables precise thermal management
  • 4 CFM airflow at up to 18000 RPM delivers strong spot cooling
  • 54 dB noise level disclosed for informed acoustic planning

Specifications

TypeOther

Questions about this item

What is the maximum speed this 40mm fan can reach under sustained load?

The fan spins up to 18000 RPM with a ±10 % tolerance, which is the peak speed you will see during continuous operation.

How loud and how much power does the fan draw when running all day?

It produces 54 dB of noise and draws 1 A at 12 V, equating to 12 W of power consumption during extended use.

What connector and voltage must my system already provide for this fan to work?

Your motherboard or controller needs a 4-pin PWM header supplying 12 V within the 7.0–13.4 V operating range.

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