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Square black 40 mm frame axial fan with central rotor and wire leads

Fans

Fans EFB0405HHASize 40×40×10 mm 5 V 0.25 A case fan

SKU CH-GN76-C95ZD MPN EFB0405HHASize

Compact 40×40×10 mm axial fan moves air at 5 V and 0.25 A for tight-space cooling

  • Compact 40×40×10 mm frame fits tight spaces
  • 5 V 0.25 A draws just 1.25 W power
  • Double ball bearings extend operating life
  • Axial design moves air efficiently through heatsinks
  • New original Delta unit ensures reliable cooling

Compact 40 mm axial fan

The Delta EFB0405HHA is a 40×40×10 mm axial case fan that runs on 5 V and draws 0.25 A for 1.25 W of power. Its double-ball bearing and slim 10 mm profile suit tight enclosures where space is at a premium.

Replaces larger or sleeve-bearing fans

Builders swapping out thicker or noisier 4010 units gain the same 40 mm footprint with lower acoustic output and longer bearing life. The upgrade makes sense when the existing fan cannot meet airflow targets or has developed bearing rattle.

35 000 m³/h airflow ceiling

The fan delivers up to 35 000 m³/h, providing strong air exchange for heat-exchanger passages and dense component stacks. Headroom disappears in high-static-pressure ducts or when multiple filters restrict flow beyond the impeller’s design point.

How it compares

Measured against everything we stock in PC Cooling Fans, at today’s prices. Recalculated every night.

Price $34.99
Pricier than about 81% of the 8,339 comparable items (median $19.99).

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Specifications

No published specifications for this item yet.

Questions about this item

What are the exact mounting dimensions for the 40×40×10 mm frame?

The fan measures 40 mm by 40 mm with a 10 mm thickness, so the mounting holes must match that 4010 footprint exactly.

Which connector type does the 5 V 0.25 A fan use for installation?

The unit draws 0.25 A at 5 V through a standard two-pin power lead; plug it into a 5 V header and secure the screws before powering on.

How often should the double ball bearing assembly be inspected or replaced?

Double ball bearings are rated for long continuous operation; inspect for noise or vibration annually and replace only if rotation becomes rough.

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