Scan code: LN104600 Manufacturer code: NF-A20-PWM-5V

Noctua NF-A20 5V PWM 200mm Beige/Brown Fan

200mm Noctua NF-A20 5V PWM, Beige/Brown, 9 Blade, SSO2 Bearing, 350-800RPM, 86.5CFM Airflow, 18.1dB, 4-pin PWM

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Scan code: LN104600 Manufacturer code: NF-A20-PWM-5V
Order now and receive it by Tuesday, 28th June
Get it Tuesday, 28 JunIn stock
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  • SCANPROTECT Protect against installation damage for 28 days. More info

    ScanProtect is an enhanced warranty specifically designed and offered by Scan to reduce the risk of any mishap or damage to components during installation.

    Our aim with ScanProtect is to encourage our customers to upgrade or build their own PC confidently. For a small additional fee our customers are provided with complete peace of mind.

Product Overview

Extra Large Quiet Fan

The NF-A20 5V PWM is a PWM-enabled 5V variant of Noctua’s award-winning, premium-quality NF-A20 200mm fan. Featuring an AAO (Advanced Acoustic Optimisation) standard frame and sophisticated aerodynamic design measures such as Flow Acceleration Channels, the NF-A20 is renowned for its superior performance and outstanding quietness of operation. Smooth Commutation Drive technology and Noctua’s reference class SSO2 bearing guarantee superb running smoothness and excellent long-term stability. Topped off with the included USB power adaptor cable, OmniJoin™ adaptor set and 6-year manufacturer’s warranty, the NF-A20 5V PWM is a premium choice for demanding 5V applications that require PWM control.

PLEASE NOTE: Being a 5V fan, the NF-A20 5V PWM cannot be run at 12V and will be damaged when used with typical 12V power sources such as PC motherboard fan headers.

5V PWM Version

5V PWM fans are used in various devices and applications. With the included USB power adaptor cable and OmniJoin™ adaptor set, the NF-A20 5V PWM is a proven premium solution that gives you full flexibility both for replacing existing 5V PWM fans and for new, custom applications that require PWM speed control.

Flow Acceleration Channels

The NF-A20 impeller features suction side Flow Acceleration Channels. By speeding up the airflow at the crucial outer blade regions, this measure reduces suction side flow separation and thus leads to better efficiency and lower vortex noise.

AAO 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.

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.

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.

Custom-designed PWM IC with SCD

Supporting fully automatic PWM speed control, the fan uses Noctua's custom-designed NE-FD3 PWM IC that integrates Smooth Commutation Drive (SCD) technology. By providing smoother torque impulses, SCD suppresses PWM switching noises and thus makes the fan quieter at low speeds.

Polarity Protection

As many devices using 5V fans feature proprietary connectors, and documentation of the pin alignment may not be available, the fan features an integrated diode for polarity protection. This way, you're on the safe side if you accidentally connect it with reverse polarity.

SSO2 Bearing

The NF-A20 features the further optimised second generation of Noctua's renowned, time-tested SSO bearing. With SSO2, the rear magnet is placed closer to the axis to provide even better stabilisation, precision and durability.

OmniJoin™ Adaptor Set

Many devices featuring 5V fans use proprietary fan headers, so the NF-A20 PWM 5V comes with Noctua’s OmniJoin adaptor set. Just cut the original fan’s cable, fix it to the adaptor using the supplied 3M Scotchlok™ connectors and you can plug the NF-A20 PWM 5V to proprietary fan headers!

USB Power Adaptor Cable

The fan includes a USB power adaptor cable that allows it to run on power banks, devices with USB host ports or USB power supplies such as those used for smartphones, giving you near endless possibilities for using the fan in your home, in your car or wherever a need for cooling occurs!

Extensive Cabling Options

The fan's short 20cm primary cable minimises cable clutter in typical applications while the supplied 30cm extension provides extended reach when necessary. Both cables are fully sleeved.

6-Year Manufacturer’s Warranty

Noctua fans are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans, the NF-A20 features an MTTF of more than 150.000 hours rating and comes with a full 6-year manufacturer’s warranty.

• Award-winning Noctua quality in a 200mm fan.
• 5V PWM version with USB power adapter.
• Noctua’s AAO (Advanced Acoustic Optimisation).
• 154mm, 110x180mm and 170mm hole spacing.
• Integrated Anti-Vibration Pads.
• Six year warranty.
Pack Information
Edition NF-A20 PWM 5V 200mm
Pack Type Single (1) Fan Standalone Pack
  • 1 x 200mm Fan/s
  • 4 x Fan Mounting Screws
Individual Fan Specifications
Fan Diameter 200mm
Fan Depth 30 mm
Fan Speed 350 - 800 rpm
Fan Blades 9
Fan Specialization Inaudible Airflow
Airflow 86.4 CFM
Air Pressure 1.08 mm H²O
Sound Level (dBA) 18.1 dBA
Sound Level (Sone)  
Motor Type  
Bearing Type SSO2
Manual Speed Controller No
Material Plastic / Rubber
Fan Colour Beige/Brown
LED Colour  
MTBF 150000 Hours
Fan Fixing
  • Push-pin Fixing
  • Rubber Fan Mounts
  • Screw Fixing
Cable length 200 + 300 mm
  • 1 x 4-pin
  • 1 x USB
Additional Information
Scan Code LN104600
Model Number NF-A20-PWM-5V
GTIN 9010018100075

Please note your statutory rights are not affected.

For further information regarding Scan's warranty procedure please see our terms and conditions

72 months
RTB Period:
12 months
Manufacturer Contact Details
200mm Noctua NF-A20 5V PWM, Beige/Brown, 9 Blade, SSO2 Bearing, 350-800RPM, 86.5CFM Airflow, 18.1dB, 4-pin PWM is rated 5.0 out of 5 by 2.
Rated 5 out of 5 by from Quiet and well built I always use Noctua fans, I find them quieter and the quality of all their products is top notch. My gaming rig stays at low temperatures by using 2 x 200mm (front and top) and 2 x 140mm on the side. The rubber mountings stop any vibration and also make for easy placement and removal if needs be.
Date published: 2020-05-19
Rated 5 out of 5 by from Noctua quality The front intake fan of my CM 690 III was getting noisier and sewing machine oil didn't fix the issue so I bought this to replace it. This fan is so quiet that you don't even hear it when it is running at full speed. I just force it to run at full speed now because I have so many HDDs and they run hot. I encountered an installation issue however - the fan was thicker than my old Cooler Master fan, so I had problem closing the front cover of the case. I had to close it by force, breaking the tabs of the dust filter in the process. Noctua mentioned on their website that this fan is compatible with the case I have, but my experience says otherwise. I think Noctua needs to factor in the fan's thickness when making the compatibility list because it is a bit misleading.
Date published: 2020-01-16
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Noctua NF-A20 5V PWM 200mm Beige/Brown Fan
Noctua NF-A20 5V PWM 200mm Beige/Brown Fan