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Small square 40mm black plastic axial fan with 4-pin connector

Haywards

Haywards DBTB0428B2G 40×40×28mm 12V 1A 18000RPM 54dB 4-pin PWM axial fan

SKU CH-YH9P-1ZQ0M

A 40×40×28 mm axial fan spins up to 18000 RPM delivering 19.4 CFM airflow with PWM speed control and a 70000-hour rated life

  • High-speed cooling at 18000 RPM maximum
  • 4 CFM airflow for demanding thermal loads
  • PWM intelligent temperature control adjusts speed automatically
  • Double ball bearing rated for 70000 hours life
  • 40×40×28 mm fits compact 12 V systems

High-speed 40 mm axial fan

The Haywards DBTB0428B2G is a 40×40×28 mm axial fan built for computer cases that demand very high airflow. It runs on 12 V DC and uses a 4-pin PWM interface for intelligent speed control based on temperature. Double ball bearings support a rated life of 70000 hours at up to 18000 RPM.

PWM control range and noise

The fan accepts an operating voltage between 7.0 V and 13.4 V and draws 1 A at full speed for 12 W of power. PWM control adjusts RPM automatically, but the maximum rotational speed produces 54 dB of radiator noise. Airflow reaches 19.4 CFM at peak performance.

Voltage and connector check

Verify that your motherboard or fan controller provides a 4-pin PWM header and can supply 12 V within the 7.0–13.4 V range. Ensure the 40 mm mounting pattern matches your case or heatsink and that the 54 dB noise level is acceptable for your environment.

How it compares

Measured against everything we stock in AV Accessories & Components, at today’s prices. Recalculated every night.

Price $21.99
Cheaper than about 69% of the 3,838 comparable items (median $41.99).

Specifications

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Product typeOther

Questions about this item

Should I pick the 40×40×28 mm model or a different size?

This unit is the 40×40×28 mm variant; choose it when your mounting holes and clearance match those dimensions.

What does 18000 RPM actually deliver inside a case?

At up to 18000 RPM it moves 19.4 CFM, giving very strong airflow for tight spaces, though noise reaches 54 dB.

How does the 4-pin PWM interface control the fan?

The 4-wire PWM connection lets the motherboard vary speed between 7.0 V and 13.4 V, capping at 18000 RPM and 12 W draw.

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