Noctua NF-A9 5V PWM
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Noctua NF-A9 5V PWM
The Noctua NF-A9 5V PWM fan is a high-quality 92mm model with PWM speed control, designed for 5V applications. It offers a premium balance of performance and quiet operation by combining aerodynamic elements, an optimised AAO frame, and modern SSO2 bearing technology. These features make it the ideal solution for users who need long-term stability, smooth operation, and low noise in a wide range of devices.
Key features of the Noctua NF-A9 5V PWM PC fan
- AAO frame with an aerodynamically optimised design
- Stepped Inlet Design and Inner Surface Microstructures for improved airflow
- Anti-vibration silicone pads for minimal vibration transfer
- PWM speed control with smooth power regulation
- Long-life, high-precision SSO2 bearing
- Polarity protection to prevent damage from incorrect wiring
Flexible 5V PWM version and practical cabling
The fan provides fully automatic speed control via PWM, ensuring efficient performance adjustment to current cooling requirements. This makes it suitable for use as a replacement for existing 5V fans and in new custom designs with PWM regulation. It includes a 20cm braided cable to help keep your system tidy, and a 30cm extension cable for greater installation flexibility.
Optimised frame design and vibration dampening
The AAO (Advanced Acoustic Optimisation) frame is designed with acoustic efficiency in mind and features integrated anti-vibration pads made of soft silicone. These minimise the transfer of vibrations to the chassis and ensure compatibility with standard mounting systems. Noctua’s proprietary design, combined with Smooth Commutation Drive technology, guarantees smooth and quiet fan operation while maintaining high airflow efficiency and reduced noise levels.
Stepped Inlet Design and Inner Surface Microstructures
The Stepped Inlet Design improves airflow by transitioning it from laminar to turbulent, which reduces intake noise and increases efficiency in space-constrained environments. Inner Surface Microstructures further limit flow separation from the blades, resulting in higher pressure efficiency and quiet operation.
Safety features and bearing reliability
The fan is equipped with a polarity protection diode that prevents damage from incorrect wiring and ensures safe operation, even if the pin layout is unknown. The second-generation SSO2 bearing takes Noctua's traditional technology to the next level with an improved design and precision manufacturing. The rear magnet is placed closer to the axis to provide better axis stabilisation, greater precision, and a longer lifespan, contributing to exceptionally quiet operation and long-term stability, even with continuous use.
Format:
92×25mm
Rotational speed:
2200RPM
Power supply:
5V
Speed control:
Automatic speed control
Power connector:
4-pin PWM
Airflow:
78.89m³/h
Maximum noise level:
22.8dB
Backlight colour:
No backlight
Bearing type:
Self-stabilising Oil-pressure Bearing (SSO2)
Specifications
Backlight
Fan speed
Technical specification
Dimensions
Pack
Connectors
| Code: | CT255a95p |
| Warranty: | 72 months |
| Links: | Producer's Website: |
| Manufacturer information |
RASCOM Computerdistribution Ges.m.b.H., Linzer Strasse 237, A-1140, Wien, Rakousko [email protected] 
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