We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Small black plastic 40mm square fan with four wires and a four-pin connector

Haywards

Haywards DBTB0428B2G 40mm 12V 4-pin cooling fan

SKU CH-RW3E-Q9PQ1

A 40 mm 12 V four-pin fan with double ball bearings, PWM speed control and 18 000 RPM maximum speed for computer cases

  • TypeOther
  • 40 mm frame fits tight computer cases
  • 12 V operation with 7.0–13.4 V range
  • Double ball bearing rated for 70000 hours
  • PWM control and speed sensing built in
  • 18000 RPM airflow up to 19.4 CFM

Product identity

The Haywards DBTB0428B2G is a 40 mm square cooling fan built for computer cases. It runs on 12 V DC power through a 4-pin connector and spins at up to 18 000 RPM with a two ball bearing design. The unit delivers 19.4 CFM of airflow while producing 54 dB of noise. It is supplied new and includes PWM speed control plus a tachometer signal line.

Who it suits and who it does not

This fan fits builders who need high airflow in a tight 40 mm frame and can tolerate the audible output of an 18 000 RPM motor. The 4-pin PWM interface allows automatic speed regulation by a motherboard or fan controller. Buyers who want silent operation or a larger frame size should look at something else because the noise level and physical dimensions are fixed by this design.

Deciding specification

The critical figure is the 18 000 RPM maximum speed combined with 54 dB noise output, which determines whether the cooling performance justifies the acoustic profile in your build. The operating voltage range of 7.0 to 13.4 V and the 12 W power draw are also fixed characteristics that must match the available header and power budget.

Highlights

  • 40 mm frame fits tight computer cases
  • 12 V operation with 7.0–13.4 V range
  • Double ball bearing rated for 70000 hours
  • PWM control and speed sensing built in
  • 18000 RPM airflow up to 19.4 CFM

Specifications

TypeOther

Questions about this item

What comes in the box with the DBTB0428B2G fan and do I need to buy a 4-pin connector separately?

The fan is supplied in its package with a 4-wire interface already attached; no separate connector is required.

How do I choose between the 12 V and 5 V versions when the title mentions a Sunon 5 V model?

The DBTB0428B2G runs on 12 V with an operating range of 7.0-13.4 V; the 5 V Sunon model is a different unit and not interchangeable.

What does the 18000 RPM figure mean for actual noise and airflow inside my case?

At full speed the fan delivers 19.4 CFM and produces 54 dB of noise, so expect strong airflow with noticeable sound.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.