heading

The NF-A8 5V PWM is a PWM-enabled 5V variant of Noctua’s award-winning, premium-quality NF-A8 80mm fan. Featuring an AAO (Advanced Acoustic Optimisation) standard frame and sophisticated aerodynamic design measures such as Flow Acceleration Channels, the NF-A8 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-A8 5V PWM is a premium choice for demanding 5V applications that require PWM control.

Being a 5V fan, the NF-A8 5V PWM cannot be run at 12V and will be damaged when used with typical 12V power sources such as PC motherboard fan headers.
Details
5V PWM version

5V PWM version

5V fans are used in various devices and applications. With the included USB power adaptor cable and OmniJoin™ adaptor set, the NF-A8 5V PWM is a proven premium solution that gives you full flexibility both for replacing existing 5V fans and for new, custom applications.
Award-winning NF-A8 design

Award-winning NF-A8 design

Having received more than 100 awards and recommendations from the international press, Noctua's NF-A8 has become a proven premium choice for 80mm cooling needs. Its renowned efficiency has convinced tens of thousands of customers all over the world.
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.
Custom-designed PWM IC with SCD

Custom-designed PWM IC with SCD

Supporting fully automatic PWM speed control, the NF-A8 5V PWM uses Noctua's novel, 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

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-A8 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-A8 5V PWM 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-A8 5V PWM 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-A8 features an MTTF of more than 150.000 hours rating and comes with a full 6-year manufacturer’s warranty.
NF-A8 5V PWM
General
Notes and warnings
Being a 5V fan, the NF-A8 5V PWM 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
80x80x25 mm
Mounting hole spacing
71,5x71,5 mm
Connector
4-pin PWM
Bearing
Blade Geometry
Rotational Speed (+/- 10%)
2200 RPM
Min. Rotational Speed (PWM, +/-20%)
450 RPM
Acoustical Noise
17,7 dB(A)
Static Pressure
2,37 mm H₂O
Max. Input Power
0,75 W
Max. Input Current
0,15 A
Voltage
5 V
MTTF
> 150.000 h
Scope of delivery
  • 30cm extension cable
  • NA-AV1 anti-vibration mounts
  • USB power adaptor cable
  • OmniJoin adaptor set
  • Fan screws
Warranty
6 years
NF-A8 5V PWM
11.09.2018 // HardZone.es
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NF-A8 5V PWM 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-A8 5V PWM 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)
31.07.2018 // PCReviews.es
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NF-A8 5V PWM 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-A8 5V PWM 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)
19.07.2018 // mod-your-case.de
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NF-A8 5V PWM Review

Mit dem NF-A8 5V u. NF-A8 5V PWM hat Noctua seine A-Serie um zwei weitere 80-mm-Lüfter erweitert, deren Einsatzgebiet aufgrund der Betriebsspannung von 5 Volt jedoch nicht direkt innerhalb des PCs zu finden ist, sondern eigentlich recht speziell ist. Schaut man sich jedoch in einem gut ausgestatteten Haushalt seine Hardwarekomponenten etwas genauer an, so kann man dort schnell einmal auf das ein oder andere Gerät stoßen, in dem ein 5-Volt-Lüfter arbeitet. Genau an dieser Stelle ist das Einsatzgebiet der neuen 80-mm-Lüfter von Noctua zu finden. Die beiden Lüfter können hier nicht nur als Ersatz für einen defekten Lüfter dienen, sondern auch dafür sorgen, das Geräuschlevel der entsprechenden Komponente zu senken.
Test verdict: "Trotz der geringen Betriebsspannung können die beiden Lüfter die gleiche Kühlleistung wie die 12-Volt-Variante des NF-A8 erreichen." (Patrick Seus, mod-your-case.de)

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-A8 5V PWM

NA-SYC1

  • 4-Pin Y-Cables
NF-A8 5V PWM

NA-FC1

  • Compact, highly flexible controller for 4-pin PWM fans
NF-A8 5V PWM

NA-SEC1

  • 4-Pin Extension Cables
NF-A8 5V PWM

NA-SAV2

  • Anti-Vibration Mounts
NF-A8 5V PWM

Installation Manual (PDF)

Information Sheet (PDF)

What pin configuration do Noctua 5V fans use?

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

5v pin configuration

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.

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.

Can Noctua fans be used to replace noisy stock fans in NAS devices?

Noctua fans such as the 40, 60, 80, 92 or 120mm NF-A series models are ideal for replacing noisy stock fans in NAS devices in order to make them quieter and thousands of users have managed to significantly reduce the noise levels of their NAS units this way. However, while it is easy and straightforward to replace the fans in some cases, it can be very difficult in others, so Noctua strongly recommends that users carefully research if it is possible to easily replace the fan(s) of their NAS device before purchasing a Noctua fan for this purpose. Some of the common issues that can occur when replacing NAS fans are:

  • Different pin assignment: Whereas Noctua fans use the standardised pin assignment for PC fans (see this FAQ for details), some NAS units use different assignments. For example, some devices have the power and GND or rpm and PWM pins swapped. Therefore please carefully verify that your NAS device uses the same pin assignment as standard fans. Experienced users may also change the pin assignment by cutting and resoldering the fan cables, but please note that this will void your Noctua manufacturer’s warranty.
  • Different pin functions: Noctua fans use the standardised pin functions for PC fans (see this FAQ for details); however, some NAS units use fans where certain pins serve a different function. For example, some devices use the RPM pin for “power good” signals. Therefore please carefully verify that your NAS device uses the same pin functions.
  • Firmware speed control: Some NAS devices demand a certain maximum or minimum fan speed. If the new fan doesn’t have the same or similar maximum or minimum speed, the device may display errors or even shut down.
  • Different starting voltage: Most NAS devices use voltage-based speed control. If the new fan has a higher starting voltage than the original fan, it may not start up right away. This may lead the NAS device to display errors or even shut down because it suspects a fan failure.
  • Different power draw: Some NAS devices monitor the fan’s power draw. If the new fan has a lower power consumption than the stock fan, the device might display errors or even shut down.

Please note that most NAS manufacturers don’t provide detailed documentation regarding fan compatibility and control, so users who want to replace the fans of their devices usually have to rely on “How to” guides, blog and forum posts or video tutorials. For example, there are excellent video tutorials available for changing the fans in popular Synology NAS models (DS416j, DS1515+ and DS1812+ in English, DS416/DS415/DS916/DS216/DS214 and DS1515+ in German). Please also note that fan compatibility and control can vary from model to model and even from revision to revision even if the devices stem from the same manufacturer. As a result, it is important to make sure that the information or guidelines you rely on when replacing your NAS fan are applicable to your specific model as well as your specific hardware and firmware revision.

Due to the possible issues listed above, Noctua recommends that only experienced users attempt to replace their NAS fans. Please note that since there are so many different NAS models and most of them lack documentation for aspects such as fan compatibility and control, Noctua customer support cannot assist you with compatibility issues when replacing NAS fans. Please contact your NAS manufacturer for any questions regarding aspects such as the device’s pin alignment or fan monitoring and control.

Can Noctua fans be used to replace noisy stock fans in switches, routers or other network devices?

Noctua fans such as the 40, 60, 80 or 92mm NF-A series models are ideal for replacing noisy stock fans in switches, routers and other network devices in order to make them quieter and thousands of users have managed to significantly reduce the noise levels of their units this way. However, while it is easy and straightforward to replace the fans in some cases, it can be very difficult in others, so Noctua strongly recommends that users carefully research if it is possible to easily replace the fan(s) of their network device before purchasing a Noctua fan for this purpose. Some of the common issues that can occur when replacing pre-installed fans are:

  • Different pin assignment: Whereas Noctua fans use the standardised pin assignment for PC fans (see this FAQ for details), some network devices use different assignments. For example, some devices have the power and GND or rpm and PWM pins swapped. Therefore please carefully verify that your device uses the same pin assignment as standard fans. Experienced users may also change the pin assignment by cutting and resoldering the fan cables, but please note that this will void your Noctua manufacturer’s warranty.
  • Different pin functions: Noctua fans use the standardised pin functions for PC fans (see this FAQ for details); however, some network devices use fans where certain pins serve a different function. For example, some devices use the RPM pin for “power good” signals. Therefore please carefully verify that your device uses the same pin functions.
  • Firmware speed control: Some network devices demand a certain maximum or minimum fan speed. If the new fan doesn’t have the same or similar maximum or minimum speed, the device may display errors or even shut down.
  • Different starting voltage: Most network devices use voltage-based speed control. If the new fan has a higher starting voltage than the original fan, it may not start up right away. This may lead the device to display errors or even shut down because it suspects a fan failure.
  • Different power draw: Some network devices monitor the fan’s power draw. If the new fan has a lower power consumption than the stock fan, the device might display errors or even shut down.

Please note that most network device manufacturers don’t provide detailed documentation regarding fan compatibility and control, so users who want to replace the fans of their devices usually have to rely on “How to” guides, blog and forum posts or video tutorials. Please also note that fan compatibility and control can vary from model to model and even from revision to revision even if the devices stem from the same manufacturer. As a result, it is important to make sure that the information or guidelines you rely on when replacing your fans are applicable to your specific model as well as your specific hardware and firmware revision.

Due to the possible issues listed above, Noctua recommends that only experienced users attempt to replace their pre-installed fans in network devices. Please note that since there are so many different devices and most of them lack documentation for aspects such as fan compatibility and control, Noctua customer support cannot assist you with compatibility issues when replacing pre-installed fans. Please contact your network device manufacturer for any questions regarding aspects such as the device’s pin alignment or fan monitoring and control.

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.

How can I find out the direction of airflow and sense of rotation?

When looking at the fan so that the circular sticker with the Noctua logo is facing you, the direction of airflow is towards you and the sense of rotation is clockwise:

P14

Can I paint my Noctua fan in order to change its color?

Since even small variations in the layer of paint can lead to an imbalance of the impeller, resulting in vibrations, higher noise levels, increased stress on the bearing and thus reduced lifespan, we do not recommend painting the fan. Please note that for the reasons stated above, painting the fan will void your warranty.

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.

Where can I find a technical documentation and specifications of the PWM speed control system of Noctua’s fans?

While using PWM (Pulse Width Modulation) based fan speed control in PC environments is usually straightforward and does not require any background knowledge, it can be vital when it comes to controlling fans via PWM in other environments. Please refer to our specification white paper for a detailed technical documentation of the PWM speed control features of Noctua’s 4-pin PWM fans. Detailing aspects such as connector types, pin configuration or RPM speed signal output as well as signal specifications and circuit design questions, it enables engineers to implement PWM based speed control for Noctua fans in custom circuit designs and applications.

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