All stock codes associated to this product
NF-A6X25-5V-PWM, NFA6X255VPWM
Noctua 60mm NF-A6x25 5V PWM 3000RPM Fan
Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and an AAO frame, the NF-A6x25 5V PWM is a PWM-enabled 5V variant of Noctua’s highly optimised, premium-quality quiet 60x25mm fan. The custom-designed NE-FD1 PWM IC that integrates Smooth Commutation Drive technology and Noctua’s reference-class SSO2 bearing guarantee superb running smoothness and excellent long-term stability. Topped off with modular cabling, the OmniJoin™ Adaptor Set and a 6-year manufacturer’s warranty, the NF-A6x25 5V PWM is a premium choice for demanding 5V applications that require PWM control. 
Being a 5V fan, the NF-A6x25 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
Many
 devices, such as network or storage solutions, use 5 volt 60mm fans 
with PWM speed control. With the same operating voltage, PWM support and
 the included OmniJoin adaptor set that makes it compatible with 
proprietary fan headers, the NF-A6x25 5V PWM is ideal for replacing 
noisy or broken 5V 60mm fans with PWM.
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. 
Reduced motor hub size
Thanks
 to its streamlined, compact motor design, the NF-A6x25's motor hub is 
smaller than with conventional 6cm fans. This allows for more blade 
surface area and thus contributes to the NF-A6x25's superior airflow and
 pressure performance. 
Flow Acceleration Channels
The
 NF-A6x25 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 mounting systems and fan clips used on heatsinks. 
Custom-designed PWM IC with SCD
Supporting
 fully automatic PWM speed control, the fan uses Noctua's 
custom-designed NE-FD3 5V 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. 
SSO2 bearing
The
 NF-A6x25 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 60mm fans use proprietary fan headers, so the 
NF-A6x25 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-A6x25 5V PWM to proprietary fan 
headers!
6-year manufacturers warranty
Noctua
 fans are renowned for their impeccable quality and outstanding 
longevity. Like all Noctua fans, the NF-A6x25 features an MTTF of more 
than 150.000 hours rating and comes with a full 6-year manufacturer's 
warranty.