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Noctua NF-A4x20 FLX fan - 40mm [NF-A4x20 FLX]

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Noctua NF-A4x20 FLX fan - 40mm
Noctua NF-A4x20 FLX fan - 40mm
Noctua NF-A4x20 FLX fan - 40mm
Noctua NF-A4x20 FLX fan - 40mm

Overview

The NF-A4x20 FLX is a highly optimized, premium quality, quiet 40 x 20 mm fan that uses Noctua's AAO frame system and advanced aerodynamic design measures such as Flow Acceleration Channels.

Stock, Shipping & Collection Options

  20+ Available Delivery in 2-3 Days
  FREE UK/EU DELIVERY over £500+
  20+ Available for Collection
SKU: LUNA-058
MPN: NF-A4x20 FLX
EAN: 9010018100112
Warranty: 12 Months
£18.44 inc VAT
Spend £35+ for finance

Details

The NF-A4x20 FLX is a highly optimized, premium quality, quiet 40 x 20 mm fan that uses Noctua's AAO frame system and advanced aerodynamic design measures such as Flow Acceleration Channels. The Smooth Commutation Drive technology and the reference-class SSO2 bearing guarantee superb running smoothness and outstanding long-term stability. Modular cabling, a low-noise adapter, the OmniJoin adapter set and a 6-year manufacturer's guarantee make the NF-A4x20 FLX a premium solution for the highest demands.

The features of the Noctua NF-A4x20 FLX at a glance:
- Stylish brown makes for a classy look
- Premium fan with aerodynamic construction
- Extremely low noise emission of max. 14.9 dB(A)
- High static pressure of up to 2.26 mmH2O
- High volume flow of max. 9.4 m³/h
- Connection via 3-pin PWM
- Very high life expectancy of over 150,000 hours
- Long warranty: 6 years

Small premium fan from Noctua
The impeller of the NF-A4x20 FLX is equipped with so-called Flow Acceleration Channels on the suction side. By accelerating airflow in the critical outer regions of the fan blades, suction-side vortex shedding is reduced, resulting in higher efficiency and lower turbulence-related noise emissions. Thanks to an optimized, compact motor design, the hub area of the NF-A4x20 FLX is significantly smaller than that of conventional 4cm fans. In this way, a larger blade area could be realized, which contributes to the superior pressure and delivery performance of the NF-A4x20 FLX. The pressure and flow rate has been increased thanks to a double depth compared to the NF-A4x10, which makes the fan perfect for applications with higher air resistance.

Noctua's AAO (Advanced Acoustic Optimization) frames have integrated vibration buffers as well as a stepped inlet area (Stepped Inlet Design) and an inner surface microstructure (Inner Surface Microstructures), which enable even better performance/noise efficiency. The graduated inlet area of the stepped inlet design creates more turbulence in the inlet. This facilitates the transition from laminar to turbulent flow, which adheres better to the frame (flow attachment) and thus increases the suction capacity of the fan, especially where the suction area is limited.

The microstructure on the inside of the frame (Inner Surface Microstructures) creates a boundary layer through which the tips of the fan blades move. This reduces the flow separation from the suction side of the blade tips, resulting in a significant reduction in torsional noise and an increase in pressure and airflow efficiency. The anti-vibration pads made of extra-soft silicone reduce the transmission of the smallest vibrations and are also compatible with all standard screws and commercially available mounting systems or fan clips used with CPU coolers.

The latest, further developed version of Noctua's SCD drive system guarantees excellent running smoothness by eliminating torque fluctuations and switching noise. This makes the NF-A4x20 FLX surprisingly quiet, even at close range. The NF-A4x20 FLX is equipped with the further optimized second generation of Noctua's proven SSO bearing system. With SSO2, the rear magnet sits closer to the fan axis for even better stabilization, resulting in further improved precision and durability.

The NF-A4x20 FLX (Flexibility) can be throttled from 5,000 to 4,400 rpm using the low-noise adapter supplied, thus enabling fine-tuning for maximum delivery capacity or maximum smoothness. If that's not enough, the included ultra-low-noise adapter can limit the fan to 3,700 rpm. The NF-A4x20 FLX comes with an adapter from 3-pin Molex to 4-pin connectors, which allows direct connection to the power supply.

Since many devices that use 40mm fans have proprietary fan connectors, the NF-A4x20 FLX comes with Noctua's OmniJoin adapter set. Simply cut the cable from the original fan, attach it to the adapter with the included 3M Scotchlok™ clips and you're ready to run the NF-A4x20 FLX on proprietary connectors too! While the 20 cm short primary cable helps to avoid cable clutter in typical applications, the supplied 30 cm extension offers extra reach for all cases. Both cables are fully sheathed.

Noctua's fans are known for their impeccable quality and outstanding durability. Like all Noctua fans, the NF-A4x20 FLX has an MTBF specification of over 150,000 hours and comes with a full 6-year manufacturer's guarantee.

Technical specifications:
Format: 40 x 40 x 20 mm
Storage Type: SSO2-Bearing
Leaf Geometry: A Series with Flow Acceleration Channels
Rotational. (+/- 10%): 5,000 rpm
Rotational. With L.N.A. (+/- 10%): 4.400 rpm
Rotational. With U.L.N.A. (+/- 10%): 3,700 rpm
Flow rate: 9,4 m³ / h
Volume flow with L.N.A .: 8.3 m³ / h
Volume flow with U.L.N. .: 6.9 m³ / h
Sound Emission: 14.9 dB (A)
Sound development with L.N.A .: 12.2 dB (A)
Noise reduction with U.L.N.A .: 8.5 dB (A)
Static pressure: 2.26 mm H2O
Static pressure with L.N.A .: 1.75 mm H2O
Static pressure with U.L.N. .: 1.23 mm H2O
Max. Power consumption: 0.6 W
Max. Current: 0.05 A
Operating voltage: 12 V
MTBF:> 150,000 h
Connection: 3-pin

Delivery:
Low-Noise Adapter (L.N.A.)
Ultra Low Noise Adapter (U.L.N.A.)
4-pin Y-cable
30 cm cable extension
NA-AV3 Anti-vibration mountings
4 fan screws

Manufacturer Warranty 6 years

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Noctua NF-A4x20 FLX fan - 40mm
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