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Small square black 40mm fan with three wires

OEM Industries

OEM Industries AD0412HB-C52 40x20mm 12V .15A 3-Wire CPU Cooler

SKU CH-R97B-7DJ8X

A 40mm ball-bearing fan with a 3-pin connector runs at 12V and 0.15A for compact CPU cooling

  • Fan size40 mm
  • Bearing designBall
  • Power input connector3 Pin
  • Product colorBlack
  • Product typeFan only
  • Compact 40×20 mm footprint fits tight chassis
  • Ball-bearing motor reduces wear for longer service life
  • 12 V 0.15 A draw keeps power demand low
  • Three-pin connector enables speed monitoring
  • ADDA-built fan delivers reliable airflow for small-form-factor cooling

Compact 40mm fan for tight builds

The AD0412HB-C52 is a 40mm square fan with a 20mm thickness designed to move air through small-form-factor chassis or low-profile heatsinks. It runs on 12V power and draws 0.15A through a standard three-pin connector.

Fits 40mm mounts and three-pin headers

This unit needs a 40mm mounting grid and a motherboard or controller header that supplies 12V on a three-pin plug. Ball-bearing construction keeps the rotor stable in any orientation, and the lack of LEDs leaves the build visually neutral.

Steady airflow under continuous duty

Ball bearings maintain consistent speed when the fan runs for long periods, avoiding the slowdown that sleeve bearings can develop over time. The fixed 12V input means output does not vary with PWM curves, so cooling stays predictable during sustained workloads.

How it compares

Measured against everything we stock in CPU Coolers & Heatsink Fans, at today’s prices. Recalculated every night.

Price $18.99
Cheaper than about 55% of the 1,559 comparable items (median $19.99).
Fan size 40 mm
Lower than about 90% of the 812 comparable items (median 80 mm).

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Specifications

Product
Model nameAD0412HB-C52
Product colorBlack
Product typeFan only
Power
Power input connector3 Pin
Size & build
Fan size40 mm
Bearing designBall
More details
LED lightingNo

Questions about this item

What is the maximum current the AD0412HB-C52 draws from a 12 V header under continuous load?

The fan is rated at 0.15 A on a 12 V supply, so the header must provide at least that much current.

How much acoustic noise and heat does the 40 mm ball-bearing fan produce when running 24/7?

The 40 mm ball-bearing design runs at a constant 12 V 0.15 A; expect a steady low hum and minimal heat output from the motor itself.

Which mounting holes or brackets must the motherboard or chassis already have for this 40x20 mm cooler?

The unit follows the standard 40 mm square mounting pattern, so the board or case needs matching 40 mm hole spacing.

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