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.
Specifications
Size - 40x40x20 mm
Mounting hole spacing - 32x32 mm
Connector - 4-pin PWM
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
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