Noctua NF-A12x25 FLX 3 pin 12V 2000RPM 120x25 Fan.

The NF-A12x25 series are Noctua’s first slim 120mm fans designed using all of Noctua’s know-how, making them ideal for space restricted situations.

Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and Noctua’s AAO frame, the NF-A12x25 is a highly optimised, premium quality quiet fan in size 120 x 15mm. Its 15mm slim design makes the NF-A12x25 ideal for space-restricted applications such as low-profile CPU coolers or HTPC cases. Its superb running smoothness, reference-class SSO2 bearing and Noctua’s trusted premium quality make it an elite choice for the highest demands.

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 minimize 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-FD1 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.
Low-Noise Adapter

The NF-A12x15 PWM is supplied with a (L.N.A.) that reduces the maximum fan speed from 1850 to 1400rpm. The L.N.A. can be used either to run the fan at a fixed speed of 1400rpm or to cap the maximum speed when using automatic PWM control.
Extensive cabling options

The fan’s short 20cm primary cable minimizes cable clutter in typical applications while the supplied 30cm extension provides extended reach when necessary. Both cables are fully sleeved and a 4-pin y-cable allows the connection of a second fan to the same PWM fan header for automatic control.
SSO2 bearing

The NF-A12x15 features the further optimized 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 stabilization, precision and durability.

• Premium quiet fan, 120x120x25mm, 12V, 3-pin Molex, 2000/1700/1350 RPM, max. 22.6 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 FLX version provides 2000/1700/1350rpm speed settings via Low-Noise Adaptors to fine-tune the fan for maximum airflow or near-silent 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

Dimensions:	120 x 120 x 25 mm
Mounting hole spacing:	105x105 mm
Connector:	3-Pin
Bearing:	SSO2
Blade Geometry A-Series with Flow Acceleration Channels:
Frame Technology:	AAO (Advanced Acoustic Optimization)
Rotational Speed (±10%):	1850 RPM
Rotational Speed with L.N.A. (±10%):	1400 RPM
Rotational Speed with U.L.N.A. (±10%):	950 RPM
Airflow:	55.4 CFM
Airflow with L.N.A.:	41.7 CFM
Airflow with U.L.N.A.:	27.4 CFM
Acoustical Noise:	23.9 dB(A)
Acoustical Noise with L.N.A.:	16.8 dB(A)
Acoustical Noise with U.L.N.A.:	10.2 dB(A)
Static Pressure:	1.53 mm H₂O
Static Pressure with L.N.A.:	0.9 mm H₂O
Static Pressure with U.L.N.A.:	0.5 mm H₂O
Max. Input Power:	1.56 W
Max. Input Current:	0.13 A
Voltage:	12 V
MTTF >:	150,000 h
Accessories:	Low-Noise Adapter (L.N.A.), Ultra-Low-Noise Adapter (U.L.N.A.), 3
30cm extension cable, NA-AV3 anti-vibration mounts and Fan screws: