Fans
Fans KD1204PKB2 40x40x20mm 12V 1.1W 7050rpm 31dBA 3-wire case fan
Compact 40×40×20 mm axial fan delivers 9.0 CFM at 7050 rpm with 31 dBA noise and a three-pin connector for speed monitoring
- Compact 40×40×20 mm footprint fits tight builds
- Double ball bearing rated for 100,000 hours continuous operation
- 12 V PWM-ready three-pin connector enables speed monitoring
- 7,050 rpm delivers 9.0 CFM airflow for focused cooling
- 31 dBA noise level keeps acoustics low at full speed
Compact 40 mm case fan for tight spaces
The SUNON KD1204PKB2 measures 40x40x20 mm and runs on 12 V, drawing 1.1 W at 7050 rpm. Its double ball bearing and 100,000 hour continuous rating suit small-form-factor PCs, industrial enclosures or embedded boards that need focused airflow in a shallow profile.
Check voltage range and header type
Your motherboard or controller must supply between 4 V and 13 V and provide a standard three-pin header that supports speed monitoring. The fan’s 9.0 CFM output is modest, so verify that the intended heatsink or chassis vent can achieve adequate cooling with this airflow level.
Double ball bearing and three-pin monitoring
The double ball bearing reduces wear in continuous operation, while the three-pin connector lets the system read fan speed without PWM control. At 31 dBA the acoustic footprint stays low, and the compact frame fits where deeper fans cannot, making daily maintenance limited to occasional dust removal.
Highlights
- Compact 40×40×20 mm footprint fits tight builds
- Double ball bearing rated for 100,000 hours continuous operation
- 12 V PWM-ready three-pin connector enables speed monitoring
- 7,050 rpm delivers 9.0 CFM airflow for focused cooling
- 31 dBA noise level keeps acoustics low at full speed
Specifications
No published specifications for this item yet.
Questions about this item
Does the 40×40×20 mm fan include screws or a mounting bracket?
Only the fan with its three-pin connector is supplied; mounting hardware must be sourced separately.
Should I choose the 7 050 rpm or 6 200 rpm version for a compact build?
The same unit runs at 7 050 rpm normally and drops to 6 200 rpm when the acceleration / deceleration line is used.
Will 9.0 CFM at 31 dBA cool a small-form-factor CPU heatsink?
The airflow suits tight enclosures and low-profile coolers; noise stays at 31 dBA while the double ball bearing is rated for 100 000 hours continuous operation.
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