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Square black plastic 40mm cooling fan with four wires visible

Haywards

Haywards DBTB0428B2G 40×40×28mm 12V 4-pin fan

SKU CH-CYCJ-9QPTG

A 40×40×28 mm 12 V PWM fan delivering 19.4 CFM at up to 18000 RPM with double ball bearings and a 70000-hour rated life

  • TypeOther
  • High-speed cooling up to 18000 RPM
  • PWM intelligent temperature control adjusts fan speed
  • Double ball bearing rated for 70000 hours
  • 4 CFM airflow through 40×40×28 mm frame
  • 4-pin 12 V interface with 7.0-13.4 V operating range

Purpose and audience

The Haywards DBTB0428B2G is a 40×40×28 mm 12 V cooling fan built for computer cases. Its 4-wire PWM interface and double ball bearing suit builders who need targeted airflow in tight spaces. The 19.4 CFM rating at up to 18000 RPM serves high-density component layouts. Buyers seeking silent operation or larger-frame fans should look elsewhere.

Build integration

The four-pin power connector plugs directly into standard motherboard headers for PWM intelligent temperature control and speed measurement. Operating voltage ranges from 7.0 to 13.4 V with a 1 A current draw and 12 W power rating. Plastic frame construction keeps weight low. No mounting hardware or ducting is included, so installers must supply their own screws and airflow path.

Sustained-load behaviour

Double ball bearing construction is rated for 70000 hours of continuous running. At maximum speed the unit produces 54 dB of radiator noise, a constant factor during prolonged loads. PWM regulation allows the motherboard to reduce RPM when thermal headroom appears, lowering acoustic output without stopping airflow. The 12 V design maintains stable performance across the declared voltage window.

Highlights

  • High-speed cooling up to 18000 RPM
  • PWM intelligent temperature control adjusts fan speed
  • Double ball bearing rated for 70000 hours
  • 4 CFM airflow through 40×40×28 mm frame
  • 4-pin 12 V interface with 7.0-13.4 V operating range

Specifications

TypeOther

Questions about this item

How long will the double ball bearing last at the rated 18000 RPM?

The fan life is specified at 70000 hours with the double ball bearing running at up to 18000 RPM.

What noise level should I expect when the fan runs continuously at full speed?

The radiator noise is rated at 54 dB when the fan operates at its maximum speed of 18000 RPM.

Does my motherboard need a 4-pin PWM header to use the intelligent temperature control?

Yes, the 4-wire interface provides PWM intelligent temperature control and speed measurement, requiring a compatible 4-pin header.

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