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Small black square 40mm frame fan with PBT blades, two wire leads

Fans

Fans KD1204PFB2 40mm 12V 6.5 CFM 6600 RPM case fan

SKU CH-3CMT-4NFZX

A 40 mm square tubeaxial fan delivering 6.5 CFM at 6600 RPM with 27.0 dB(A) noise

  • Compact 40 mm footprint fits tight chassis spaces
  • 5 CFM airflow at 6600 RPM delivers targeted component cooling
  • Low 27.0 dB(A) noise suits quiet builds
  • Ball bearing design supports continuous 14–158 °F operation
  • CE, CUR, TUV, UL approvals confirm safety compliance

Compact 40 mm axial fan for tight builds

This 40 mm square tubeaxial fan runs on 12 VDC and draws only 0.090 A, delivering 6.5 CFM at 6600 RPM while producing 27.0 dB(A). The ball bearing and PBT frame and blades are rated for continuous operation from -10 °C to 70 °C. It carries CE, CUR, TUV and UL approvals and weighs just 15.42 g.

Suits space-constrained chassis

Builders fitting a 40×40×10.5 mm cavity with two-wire 12 V power will find this a direct mechanical and electrical match. It is not for systems needing higher static pressure, PWM speed control, larger frame sizes or greater airflow than 6.5 CFM.

6.5 CFM airflow at 6600 RPM

The 6.5 CFM (0.182 m³/min) rating at 6600 RPM is the single figure that determines whether this fan can move enough air for the target enclosure. If the thermal design requires more flow, a different fan must be chosen.

How it compares

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

Price $28.99
Pricier than about 72% 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 power source do I need to run the 12V 0.090A fan?

Connect it to a 12 VDC supply rated for at least 0.090 A; the fan operates between 5 V and 13.8 VDC.

Will the 40 mm square frame with 10.50 mm depth fit the mounting holes on my legacy chassis?

The frame measures 40 mm by 40 mm and is 10.50 mm thick; verify your chassis has matching 40 mm mounting centres and clearance for the depth.

How can I confirm the fan is spinning at the rated 6600 RPM after installation?

Listen for the specified 27.0 dB(A) noise level and feel for airflow consistent with 6.5 CFM; a hardware-monitoring tool or tachometer reading 6600 RPM confirms correct operation.

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