About this item
Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and Noctua’s AAO frame, the NF-A4x20 Cabinet Fan is a highly optimized, premium-quality quiet fan in size 40x20mm. The FLX version provides 5000/4400/3700rpm speed settings via the supplied Low-Noise Adaptors and includes the 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.
Technical Details
| Brand | Noctua |
| Model Number | NF-A4x20 |
| Product Type | Cabinet Fan |
| Size | 40x40x20 mm |
| Mounting hole spacing | 32×32 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 @ 20% PWM (+/-20%) | 1200 RPM |
| Airflow | 9,4 m³/h |
| Airflow with L.N.A. | 8,3 m³/h |
| Airflow with U.L.N.A. | 6,9 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 | 12V |
| MTTF | > 150.000 h |
| Scope of delivery |
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| Warranty | 3 Years |
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