All stock codes associated to this product
NF-A20-5V-PWM, NFA205VPWM
Noctua 200mm NF-A20 5V 800rpm 4pin PWM 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.
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 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 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 5V PWM comes with Noctuas OmniJoin adaptor set. Just cut the original fans cable, fix it to the adaptor using the supplied cable connectors and you can plug the NF-A20 5V PWM 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 manufacturers 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.
