All stock codes associated to this product
NF-A12x25-5V-PWM, NFA12x255VPWM
The NF-A12x25 5V PWM is a PWM-enabled 5V variant of Noctuas award-winning, premium-quality NF-A12x25 120mm fan. Featuring an AAO (Advanced Acoustic Optimisation) standard frame and sophisticated aerodynamic design measures such as Flow Acceleration Channels, the NF-A12x25 is renowned for its superior performance and outstanding quietness of operation. Smooth Commutation Drive technology and Noctuas 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 manufacturers warranty, the NF-A12x25 5V PWM is a premium choice for demanding 5V applications that require PWM control.
Being a 5V fan, the NF-A12x25 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-A12x25 5V PWM
is a proven premium solution that gives you full flexibility both for
replacing existing 5V fans and for new, custom applications.
Next-generation performance
Noctuas
120mm fans such as the NF-F12 and NF-S12A are renowned as being among
the best on the market and have received more than 400 awards and
recommendations from the international press. With its further improved
efficiency and novel, state-of-the-art engineering, the NF-A12x25
represents another step up in performance and manufacturing.
Highly optimised P/Q curve for all applications
The NF-A12x25s sophisticated aerodynamic design allows for a pressure to airflow (P/Q) curve
that is extremely strong in the critical mid-section. This means that
the NF-A12x25 is a true jack-of-all-trades with excellent performance in
both static pressure demanding and airflow demanding applications.
Excellent on-application acoustics
While
many fans produce unpleasant, high-pitched noises when installed in
typical applications such as on heatsinks or radiators, the NF-A12x25
has been carefully fine-tuned for optimal on-application acoustics. It
produces a smooth, pleasant frequency profile and surprisingly low sound
pressure levels (SPL) when working against back pressure.
Flow Acceleration Channels
The
NF-A12x25 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.
Ultra-tight tip clearance
The
NF-A12x25 has a record tight tip clearance (distance between the blade
tips and the inside of the frame) of only 0.5mm. This highly ambitious
design sets a new benchmark for 120mm fans and helps the NF-A12x25 to
work more efficiently against back pressure, such as on heatsinks or
radiators, by reducing leak flows through the gap between impeller and
frame.
Metal-reinforced motor hub
The
centrepiece of the NF-A12x25s motor hub is made entirely from steel
and the axle mount is reinforced with an additional brass structure. In
combination, both measures ensure ultimate precision and increased
stability in the critical hub area.
Sterrox liquid-crystal polymer compound
The NF-A12x25s impeller is made from Noctuas novel Sterrox
liquid-crystal polymer (LCP) compound that features extreme tensile
strength, an exceptionally low thermal expansion coefficient and damping
characteristics that are ideal for reducing resonance and vibration
phenomena in advanced fan-blade designs.
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-A12x25 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.
Metal bearing shell
In
order to guarantee the highest possible degree of manufacturing
precision, minimum tolerance and excellent long-term stability, the
NF-A12x25 sports a CNC milled bearing shell made entirely from brass.
OmniJoin adaptor set
Many
devices featuring 5V fans use proprietary fan headers, so the NF-A12x25
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-A12x25 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-A12x25 features an MTTF of more
than 150.000 hours rating and comes with a full 6-year manufacturers
warranty.
