NF-A4x20 PWM
Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and Noctua’s AAO frame, the NF-A4x20 is a highly optimised, premium-quality quiet fan in size 40x20mm. The PWM version sports Noctua’s custom-designed NE-FD1 IC for fully automatic speed control via 4-pin fan headers and comes with a Low-Noise Adaptor as well as an OmniJoin™ Adaptor Set for easy connection to proprietary fan headers. Its superb running smoothness, reference-class SSO2 bearing and Noctua’s trusted premium quality make it an elite choice for the highest demands.
FAN Specification
Size
40x40x20 mm
Mounting hole spacing
32x32 mm
Connector & pin-configuration
4-pin PWM
Cable length
20cm + 30cm NA-EC1 extension cable
Bearing
SSO2
Blade geometry
A-Series with Flow Acceleration Channels
Frame technology
AAO (Advanced Acoustic Optimisation)
Rotational speed (+/- 10%)
5000 RPM
Rotational speed with L.N.A. (+/- 10%)
4400 RPM
Min. rotational speed (PWM, +/-20%)
1200 RPM
Airflow
9,4 m³/h
Airflow with L.N.A.
8,3 m³/h
Acoustical noise
14,9 dB(A)
Acoustical noise with L.N.A.
12,2 dB(A)
Static pressure
2,26 mm H₂O
Static pressure with L.N.A.
1,75 mm H₂O
Max. input power
0,6 W
Max. input current
0,05 A
Operating voltage
12 V
Voltage PWM signal
5 V
MTTF
> 150.000 h
Scope of delivery
Low-Noise Adaptor (L.N.A.)
4-pin y-cable
30cm extension cable
OmniJoin™ adaptor set
NA-AV3 anti-vibration mounts
Fan screws
Warranty
6 years
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