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.Size40x40x20 mmMounting hole spacing32x32 mmConnector & pin-configuration4-pin PWMCable length20cm + 30cm NA-EC1 extension cableBearingSSO2Blade geometryA-Series with Flow Acceleration ChannelsFrame technologyAAO (Advanced Acoustic Optimisation)Rotational speed (+/- 10%)5000 RPMRotational speed with L.N.A. (+/- 10%)4400 RPMMin. rotational speed (PWM, +/-20%)1200 RPMAirflow9,4 m³/hAirflow with L.N.A.8,3 m³/hAcoustical noise14,9 dB(A)Acoustical noise with L.N.A.12,2 dB(A)Static pressure2,26 mm H₂OStatic pressure with L.N.A.1,75 mm H₂OMax. input power0,6 WMax. input current0,05 AOperating voltage12 VVoltage PWM signal5 VMTTF> 150.000 hIngår:Low-Noise Adaptor (L.N.A.)4-pin y-cable30cm extension cableOmniJoin™ adaptor setNA-AV3 anti-vibration mountsFan screwsWarranty6 years
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