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Noctua NF-A12x25 ULN, Ultra Quiet Silent Fan, 3-Pin (120mm, Brown)

In stock.
Ships from United States.
  • PWM
  • FLX
  • ULN
  • 5V PWM
  • 5V
  • chromax
  • LS-PWM
  • Ultra low noise fan, 120x120x25mm, 12V, 3-pin Molex, 1200/900 RPM, max. 12.1 dB(A), >150,000 h MTTF
  • Next-generation 120x25mm A-series design provides unprecedented quiet cooling performance, ideal for CPU coolers and watercooling radiators
  • State-of-the-art engineering (AAO frame, Flow Acceleration Channels, record tight 0.5mm tip clearance) and construction (Sterrox LCP material, metal-reinforced hub, metal bearing shell, etc.)
  • 3-pin ULN version with 1200rpm (900rpm with supplied Ultra-Low-Noise Adaptor) for serious silent enthusiasts who demand the utmost quietness of operation
  • Includes anti-vibration mounts, radiator gasket, fan screws, extension cable and 3:4-pin adaptor for powering the fan directly from the power supply
Noctua Case Fans-Noctua NF-A12x25 5V PWM Noctua Case Fans-Noctua NF-A12x25 5V PWM

The NF-A12x25 is a highly optimised next-generation 120mm fan that integrates Noctua’s latest innovations in aerodynamic engineering in order to achieve an unprecedented level of quiet cooling performance. It takes state-of-the-art technologies such as the AAO (Advanced Acoustic Optimisation) frame or Flow Acceleration Channels and combines them with a record tight tip clearance of only 0.5mm, which is made possible by using the novel Sterrox liquid-crystal polymer (LCP) compound as well as a metal-reinforced motor hub and axis for ultimate precision. Following the approach of Noctua’s A-series, the NF-A12x25 is a true all-rounder that yields superb results in all types of usage, regardless of whether it’s in low-impedance, airflow-oriented applications such as case cooling, or high-impedance, pressure-demanding scenarios such as on heatsinks and watercooling radiators. The 3-pin ULN version provides super-slow 1200/900rpm speed settings for ultra-low-noise applications and highly noise-sensitive users who demand near-silent acoustics. Topped off with exceptional running smoothness, Noctua’s reference-class SSO2 bearing and a rich bundle of accessories, the NF-A12x25 is a premium-quality product through and through. Its superior efficiency, cutting-edge construction and pioneering materials make it an elite choice for the most discerning demands.

Noctua Case Fans-Noctua NF-A12x25 5V PWM

Next-generation performance

Noctua’s 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.

Noctua Case Fans-Noctua NF-A12x25 5V PWM

Sterrox liquid-crystal polymer compound

The NF-A12x25’s impeller is made from Noctua’s 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.

Noctua Case Fans-Noctua NF-A12x25 5V PWM

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.

Noctua Case Fans-Noctua NF-A12x25 5V PWM

Metal-reinforced motor hub

The centrepiece of the NF-A12x25’s 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.

Noctua Case Fans-Noctua NF-A12x25 5V PWM

Scope of delivery

  • NA-RC12 Low-Noise Adaptor (L.N.A)
  • NA-AC1 3:4-pin adaptor cable
  • NA-EC2 30cm extension cable
  • 4x NA-AV2 anti-vibration mounts
  • NA-AVG1 anti-vibration gasket for water cooling radiators
  • Fan screws
Noctua Case Fans-Noctua NF-A12x25 5V PWM

Highly optimised P/Q curve for all applications
The NF-A12x25’s 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 offers excellent performance in both static pressure demanding and airflow demanding applications.

Noctua NH-U9 TR4-SP3
NF-A12x25 PWM
Noctua NH-U9 TR4-SP3
NF-A12x25 FLX
Noctua NH-U9 TR4-SP3
NF-A12x25 ULN
Noctua NH-U9 TR4-SP3
NF-A12x25 5V PWM
Noctua NH-U9 TR4-SP3
NF-A12x25 5V
Voltage 12 V 12 V 12 V 5 V 5 V
Connector 4-pin PWM 3-pin 3-pin 4-pin PWM 3-pin
RPM Max: 2000 / Min: 450 2000 1200 Max: 1900 / Min: 450 1900
RPM with L.N.A. 1700 1700 900 - -
RPM with U.L.N.A. - 1350 - - -
Acoustical Noise 22,6 dB(A) 22,6 dB(A) 12,1 dB(A) 21,4 dB(A) 21,4 dB(A)
Acoustical Noise with L.N.A. 18,8 dB(A) 18,8 dB(A) 7,6 dB(A) - -
Acoustical Noise with U.L.N.A. - 14,2 dB(A) - - -
Size 120x120x25 120x120x25 120x120x25 120x120x25 120x120x25
Color Brown & Beige Brown & Beige Brown & Beige Brown & Beige Brown & Beige

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