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£ 14.58 ex. vat

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Noctua NF-S12A PWM Ultra Quiet 120mm PWM Cooling Fan

  • Two speed settings for maximum quietness
  • High 62.21 CFM airflow
  • Advanced Acoustic Optimisation Frame
  • Custom NE-FD1 circuitry for smooth speed control
  • Smooth SSO-Bearings

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QuickFind: 624071

Mfr part code: NF-S12A-PWM

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    Noctua NF-S12A PWM Ultra Quiet 120mm PWM Cooling Fan Product Description

    Noctua NF-S12A PWM Ultra Quiet 120mm PWM Cooling Fan

    The NF-S12S-PWM is Noctua's latest 120mm PWM premium quality fan that offers full flexibility in quiet to ultra-quiet case cooling thanks to its Advanced Acoustic Optimisations.

    Specifically conceived for pressure demanding applications such as CPU cooling, the classic NF-P12 120mm fan helped to found Noctua’s reputation as a top-tier manufacturer of premium quality quiet cooling components and still impresses users with its exquisite quietness and superb performance.


    Two speed settings for maximum quietness

    High 62.21 CFM airflow

    Advanced Acoustic Optimisation Frame

    Custom NE-FD1 circuitry for smooth speed control

    Smooth SSO-Bearings

    Six year warranty

    Featuring a further refined blade design with Anti-Stall Knobs that works in tandem with the new AAO or Advanced Acoustic Optimisation frame. The NF-S12A improve s the airflow/noise efficiency of its renowned predecessor by up to 8%. 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 to reduce the maximum speed during PWM control from 1200 to 900rpm. Its superb running smoothness, and Noctua’s trusted premium quality make it an elite choice for quiet case cooling.

    Noctua’s Advanced Acoustic Optimisation Frame

    Noctua’s AAO (Advanced Acoustic Optimisation) frames feature integrated anti-vibration pads as well as Noctua’s proprietary Stepped Inlet Design and Inner Surface Microstructures, both of which further refine the fan’s performance/noise efficiency.

    Anti-stall Knobs: What is Stall?

    Noctua’s S12 series fans impellers use a high angle of attack in order to achieve superior airflow. However, impellers with high angles of attack are typically more prone to undesired stall and flow separation phenomena that can occur when the fan is working against higher impedance such as when blowing through tight fan filters or when used on heatsinks and radiators.

    In these situations when the fan is building up high pressure but less air is moving through, the speed of the air particles flowing alongside the suction side of the fan blades gradually decreases towards the trailing edge. The lower the speed and the higher the counter-pressure, the higher the risk of the air particles becoming detached from the blade surface. This flow separation phenomenon known as stall leads to undesired turbulence, reduced efficiency and translates into a dent in the fan’s performance curve.

    Integrated Anti-Vibration Pads

    Integrated Anti-Vibration Pads made from extra-soft silicone minimise the transmission of minute vibrations while maintaining full compatibility with all standard screws and other mounting systems.

    Smooth Commutation Drive 2

    The latest version of Noctua’s advanced Smooth Commutation Drive system ensures superb running smoothness by eliminating torque variations and switching noises. This makes the NF-S12A remarkably quiet even at very close distance.

    Stepped Inlet Design

    Noctua’s Stepped Inlet Design adds turbulence to the influx in order to facilitate the transition from laminar flow to turbulent flow, which reduces tonal intake noise, improves flow attachment and increases suction capacity, especially in space restricted environments.

    Inner Surface Microstructures
    With the tips of the fan blades ploughing through the boundary layer created by the Inner Surface Microstructures, flow separation from the suction side of the blades is significantly suppressed, which results in reduced blade passing noise and improved airflow and pressure efficiency.

    Package Contents

    As expected from Noctua, the fan is well packaged and is supplied with both the usual fan mounting screws and also rubber fan mounts to isolate the fan from the case ensuring that no vibrations from the fan can reach the case. An in-line resistor (L.N.A) is included and this simply lowers the voltage and therefore the overall speed of the fan if the default range of speeds are too high. A Molex adapter allowing you to power the fan from the PSU, an extension cable and a PWM splitter cable are also included.


    Size - 120 x 120 x 25 mm

    Bearing - SSO-Bearing

    Connector - 4-Pin PWM

    Blade Geometry - S-Series with Anti-Stall Knobs

    Maximum Rotational Speed ±10% - 1200 PRM

    Maximum Rotational Speed ±10% with L.N.A. ±10% - 900 RPM

    Maximum Airflow - 62.21 CFM

    Maximum Airflow with L.N.A. - 48.96 CFM

    Maximum Acoustical Noise - 17.8 dB(A)

    Maximum Acoustical Noise with L.N.A. - 10.7 dB(A)

    Maximum Static Pressure - 1.19 mm H2O

    Maximum Static Pressure with L.N.A. - 0.73 mm H2O

    Input Power - 1.44 W

    Input Current - 0.12 A

    Voltage Range - 12 V

    MTBF > 150.000 h

    Technical Specifications

    Heatsink & Fan

    Power Connector 4-pin fan connector
    Fan Diameter 120 mm
    Fan Height 25 mm
    Fan Bearing SSO2 bearing
    Rotation Speed 300-1200 rpm
    Air Flow 63.3 cfm
    Air Pressure 1.19 mm
    Noise Level 17.8 dBA
    Start Voltage 12 V
    Features Pulse-width modulation (PWM) support

    Manufacturer Warranty

    Service & Support Limited warranty - 6 years
    Service & Support Details Limited warranty - 6 years


    Product Type Case fan
    Package Content Ultra-Low-Noise Adaptor (U.L.N.A.), 4 vibration isolators, 1 extension cable (30 cm)
    Width 12 cm
    Depth 12 cm
    Height 2.5 cm


    Mounting Kit Included
    MTBF 150,000 hour(s)

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