heading

The NF-A20 5V is a dedicated 5V version 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 5V 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 is a premium choice for demanding 5V applications.

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

Details
5V version

5V version

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

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

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

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

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

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

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 fan remarkably quiet even at very close distances.
Polarity protection

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

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

OmniJoin™ adaptor set

Many devices featuring 5V fans use proprietary fan headers, so the NF-A20 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 5V to proprietary fan headers!
USB power adaptor cable

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

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

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

FAN Specification
Size
200x200x30 mm
Mounting hole spacing
154x154, 110x180, 170x170 mm
Connector
3-pin
Bearing
Blade geometry
Rotational speed (+/- 10%)
800 RPM
Acoustical noise
18,1 dB(A)
Static pressure
1,08 mm H₂O
Max. input power
0,85 W
Max. input current
0,17 A
Operating voltage
5 V
MTTF
> 150.000 h
Scope of delivery
  • 30cm extension cable
  • NA-AV3 anti-vibration mounts
  • USB power adaptor cable
  • OmniJoin adaptor set
  • Fan screws
Warranty
6 years
NF-A20 5V
11.09.2018 // HardZone.es
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NF-A20 5V Review

Salta a la vista que cuanto más grande es el ventilador más se nota la diferencia de temperatura del router, si bien es cierto que el NF-F12 gracias a su tecnología que hace que el aire salga más recto, se comporta incluso mejor que el modelo de 140 mm. También es sorprendente que con el pequeño NF-A4x10 de solo 40 mm de diámetro, se logra bajar la temperatura del router un par de grados; sinceramente, yo esperaba que su efecto fuera nulo, ya que depende mucho de en qué zona del router lo pongamos dado su pequeño tamaño. No obstante, también hay que decir que algunos de ellos son bastante ruidosos dado que conectados por USB funcionan siempre al máximo. El modelo de 200 mm es prácticamente inaudible, y me ha sorprendido también el poco ruido generado por el NF-A12x25 y el gran flujo que ambos son capaces de mover. En definitiva son los dos que me han parecido mejores en todos los aspectos.
Test verdict: "Con esta nueva familia de ventiladores capaces de funcionar a 5V e incluso por USB, Noctua amplía el espectro de posibilidades que brinda añadiendo compatibilidad con dispositivos como impresoras 3D o NAS, con el añadido de que podremos aumentar el elenco de posibilidades hasta donde nos llegue la imaginación gracias a que son compatibles con USB, y todo con la calidad y el rendimiento a los que nos tiene acostumbrados este fabricante austriaco." (Rodrigo Alonso, HardZone.es)
12.10.2018 // GreenTechReviews.ru
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NF-A20 5V Review

Вне зависимости от выбранной модели вы получаете отличную эффективность, очень тихую работу, а что самое главное – 6-летнюю гарантию, что означает полную уверенность производителя в качестве выпускаемой продукции. Да, стоимость всё-таки выше, чем у безымянных аналогов, но и сравнивать их с премиальными вариантами Noctua попросту глупо. Абсолютно все рассмотренные в данном материале модели вентиляторов совершенно заслуженно получают награды “Выбор редакции”!
Test verdict: "Вне зависимости от выбранной модели вы получаете отличную эффективность, очень тихую работу, а что самое главное – 6-летнюю гарантию, что означает полную уверенность производителя в качестве выпускаемой продукции." (Солонин Владимир, GreenTechReviews.ru)
06.08.2018 // mod-your-case.de
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NF-A20 5V Review

Mit dem NF-A20 5V u. NF-A20 5V PWM hat Noctua seine A-Serie um zwei 200-mm-Lüfter erweitert, deren Einsatzgebiet aufgrund der Betriebsspannung von 5 Volt jedoch nicht direkt innerhalb des PCs zu finden ist, sondern überall dort, wo ein entsprechender 5-Volt-Lüfter arbeitet. Die beiden Lüfter können hier nicht nur als Ersatz für einen defekten Lüfter dienen, sondern dank der geringen Maximaldrehzahl von gerade einmal 800 RPM auch dafür sorgen, das Geräuschlevel der entsprechenden Komponente zu senken. Trotz der geringen Betriebsspannung können die beiden Lüfter die gleiche Kühlleistung wie die 12-Volt-Variante des NF-A20 erreichen. Die Verarbeitung der beiden Lüfter ist auf einem sehr hohen Niveau, welches sich auch in der MTBF von 150.000 Stunden und der Garantiezeit von sechs Jahren widerspiegelt.
Test verdict: " Die Lüfter schaffen es, bei einer sehr angenehmen Geräuschkulisse eine Luftmenge von fast 150 m³/h zu fördern, wodurch sie trotz der niedrigen Drehzahl von 800 RPM eine sehr hohe Leistung bieten." (Patrick Seus, mod-your-case.de)
31.07.2018 // PCReviews.es
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NF-A20 5V Review

no tenemos sino palabras de agradecimiento a Noctua por la realización de estos productos, donde podemos observar que todos destacan en una calidad excepcional
Test verdict: "no tenemos sino palabras de agradecimiento a Noctua por la realización de estos productos, donde podemos observar que todos destacan en una calidad excepcional" (Sergi Sanz, PCReviews.es)
24.07.2018 // HWready.it
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NF-A20 5V Review

Noctua ha da sempre l’abitudine di portare sul mercato prodotti eccezionali, anche questa volta ci riesce sia a livello prestazionale che a livello qualitativo. Le proposte viste oggi si adattano in pratica a quasi tutti i possibili usi per quanto riguarda i piccoli e grandi elettrodomestici, l’interfaccia a 5v allontana in parte dal mondo dei PC queste proposte. Durante i nostri test abbiamo provato a vedere come sarebbe possibile usare questi prodotti con elettrodomestici che sicuramente tutti abbiamo in casa. Cominciamo dal modem, noi ci affidiamo ad un Fritz!Box 7590 che è tra i più potenti sul mercato, ma anche questo soffre il caldo estivo. Abbiamo adagiato una ventolina da 4 cm vicino ad una delle feritoie e dimezzato le temperature in un attimo, semplicemente alimentandola con l’USB dello stesso. Stessa cosa abbiamo fatto con un box android vecchio stampo, che dopo una decina di minuti cominciava a scaldare e attivava la sua fastidiosa ventolina, anche qui la piccola ventola da 4 cm ha fatto il suo miracolo. Abbiamo montato due fa 8 cm dietro una PS4 pro, diminuendo drasticamente il rumore prodotto dalla stessa. Gli elettrodomestici forniti di USB che potrebbero giovare di una ventola Noctua sono tantissimi.
Test verdict: "Noctua ha da sempre l’abitudine di portare sul mercato prodotti eccezionali, anche questa volta ci riesce sia a livello prestazionale che a livello qualitativo." (Mauro Santoro, HWready.it)
23.07.2018 // XtremeSystems.org
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NF-A20 5V Review

There should be no doubt that a cooling fan from Noctua is going to be a high quality product. The 200mm 5V fans provided for this review confirmed this. While more and more PC cases support 20cm intake, side-panel or exhaust fans, many of the bundled stock units and available aftermarket options are of questionable quality. By contrast, the NF-A20 5V PWM is a true premium grade solution worthy of Noctua's award-winning A-series. Another great thing about each of these fans that was not covered in detail within the review is the bundle of accessories. With all the adapters and mounting hardware options provided, you have the flexibility to custom tailor your installation to meet your expectations. The construction, styling, and quality of these fans is evident the instant you pull them out of their packaging.
Test verdict: "The fans are all high quality and will help keep your system cool and quiet. That said, they universally earn the "Excellent" award." (Ambrosidou Nat, XtremeSystems.org)

NA-SAV4

  • 16 NA-AV4 silicone anti-vibration mounts for up to 4 fans
  • Flat case-side end for clean exterior look
  • 5 defined, numbered pawls
  • Compatible with all Noctua fans
NF-A20 5V

NA-SEC2

  • 3-Pin Extension Cables
NF-A20 5V

NA-SYC2

  • 3-Pin Y-Cables
NF-A20 5V

Installation Manual (PDF)

Information Sheet (PDF)

Can I disassemble my fan for cleaning (or other purposes, e.g. painting)?

In order to ensure flawless operation over many years of usage, all Noctua fans come with a premium grade SSO bearing, which is fully sealed to prevent the entering of fine dust particles. Please note that the fan is not designed to be taken apart by the user. Removing the impeller from the frame will break the sealing of the bearing and results in a loss of warranty.

It is thus recommended to clean your fans using a duster, slightly moist tissue or canned air. Please be careful not to use too much force in order to prevent any damage to the fan. Please don’t use a vacuum cleaner as this may apply excessive force to the fan.

How should I clean my Noctua fan?

Fans inside computer cases tend to accumulate dust over longer periods of usage. In order to maintain maximum performance, please clean your fans regularly using a duster, slightly moist tissue or canned air. Please be careful not to use too much force in order to prevent any damage to the fan. Please do not use a vacuum cleaner as this may apply excessive force to the fan and do not put the fan under running water as water residues inside the motor may lead to short circuits.
In order to ensure flawless operation over many years of usage, Noctua’s premium grade SSO bearings are fully sealed to prevent the entering of fine dust particles. Please note that the fan is not designed to be taken apart by the user. Removing the impeller from the frame will break the sealing of the bearing and results in a loss of warranty.

What pin configuration do Noctua 5V fans use?

The pin configuration of Noctua 5V fans is identical to 12V fans:

5v pin configuration

How much torque should be used for fan screws?

Please use 0.6Nm to tighten fan screws. Make sure not to overtighten the screws as this may damage the fan frame.

Which Noctua fan or CPU cooler should I buy? How to choose the right model?

Not sure which Noctua product to buy? Our detailed buying guides for fans and CPU coolers help you to choose the model that works best for you.

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