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Small black square cooling fan 40mm by 28mm with three wires

OEM Industries

OEM Industries 109P0412G3D073 40mm 12V 0.31A 3-pin CPU cooler

SKU CH-H9JX-K21SS

A 40 mm square SANYO fan with 12 V 0.31 A three-pin power for compact CPU cooling

  • ColorBlack
  • TypeFan only
  • Fan Size40mm
  • Power Connector3 Pin
  • LEDNo
  • Compact 40 mm frame fits tight builds
  • 12 V 0.31 A draw keeps power use low
  • Three-pin connector enables speed monitoring
  • SANYO 4028 design ensures reliable airflow
  • Fan-only unit suits custom heatsink setups

40 mm SANYO 12 V fan

The OEM Industries 109P0412G3D073 is a 40 mm square cooling fan built by SANYO for 12 V operation. It draws 0.31 A through a standard three-pin connector and carries no LED lighting. The unit is sold as a fan only, without heatsink or mounting hardware. It suits technicians replacing a failed 4028-size fan in compact chassis or legacy CPU coolers.

Three-pin power connector

The three-wire interface supplies power, ground and a tachometer signal so the motherboard can monitor rotational speed. No PWM wire is present, so voltage control is the only speed-regulation method available. Because the package contains only the fan itself, installers must reuse existing screws, brackets or retention clips from the original cooler assembly.

Repairers needing a 4028 replacement

This fan fits builds that specifically require a 40 mm by 28 mm frame with 12 V 0.31 A ratings and a three-pin header. It does not suit systems that demand PWM control, larger frame dimensions, higher airflow specifications or integrated RGB illumination. Buyers needing a complete cooler kit with heatsink and mounting parts should look elsewhere.

Points forts

  • Compact 40 mm frame fits tight builds
  • 12 V 0.31 A draw keeps power use low
  • Three-pin connector enables speed monitoring
  • SANYO 4028 design ensures reliable airflow
  • Fan-only unit suits custom heatsink setups

Caractéristiques

Model109P0412G3D073
ColorBlack
TypeFan only
Fan Size40mm
Power Connector3 Pin
LEDNo

Questions sur cet article

Will the 109P0412G3D073 sleeve bearing need relubrication or replacement?

The 40 mm sleeve-bearing fan is not user-serviceable; when noise or speed drops, replace the whole 109P0412G3D073 unit.

What limits continuous operation of the 12 V 0.31 A motor?

The 12 V 0.31 A rating is the thermal ceiling; sustained load at that current will hit the motor’s temperature limit first.

How loud and warm does the 4028 fan get running all day?

The 4028 12 V 0.31 A fan runs at a modest current, producing a low hum and slight warmth that case airflow disperses.

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