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Part Number:
423453
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Manuf No:
NF-A20-PWM
NFA20PWM
Shipping Weight:
0.3 KG (Includes product packaging)
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All stock codes associated to this product
NF-A20-PWM, NFA20PWM

Overview

The NF-A20 is a highly optimised, premium quality quiet 200mm fan. Featuring an AAO (Advanced Acoustic Optimisation) standard frame as well as sophisticated aerodynamic design measures such as Flow Acceleration Channels, the NF-A20 brings the renowned quiet cooling performance of Noctuas award-winning A-series to the increasingly popular 20cm form factor. The PWM version uses Noctuas custom designed NE-FD1IC for fully automatic speed control via 4-pin fan headers, which allows it to strike a perfect balance between quietness and ventilation performance in each given situation. Its superb running smoothness, reference-class SSO2 bearing and Noctuas trusted premium quality make the NF-A20 an elite choice for the highest demands.

Details

Award-winning Noctua quality in 20cm size

Award-winning Noctua quality in 20cm size

While more and more PC cases support 20cm intake, side-panel or exhaust fans, many of the bundled stock units and available aftermarket options are of questionable quality. By contrast, the NF-A20 is a true premium grade solution worthy of Noctuas award-winning A-series.

154mm, 110x180mm and 170mm hole spacing

154mm, 110x180mm and 170mm hole spacing

In order to ensure broad compatibility with todays PC cases, the NF-A20 features three sets of mounting holes: While the 154x154mm and 110x180mm spacing allow it to replace most 200mm fans, the 170x170mm spacing is used by many 230 and 250mm fans, which can thus also be replaced by the NF-A20.*

Flow Acceleration Channels

Flow Acceleration Channels

The NF-A20 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

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

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

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

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

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 Adaptor

Low-Noise Adaptor

The NF-A20 PWM is supplied with a (L.N.A.) that reduces the maximum fan speed from 800 to 550rpm. The L.N.A. can be used either to run the fan at a fixed speed of 550rpm or to cap the maximum speed when using automatic PWM control.

Extensive cabling options

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 and a 4-pin y-cable allows the connection of a second fan to the same PWM fan header for automatic control.

SSO2 bearing

SSO2 bearing

The NF-A20 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.

6-year manufacturer's warranty

6-year manufacturers warranty

Noctua fans are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans, the NF-A20 features an MTTF of more than 150.000 hours rating and comes with a full 6-year manufacturers warranty.

Specifications

Size

200x200x30 mm

Mounting hole spacing

154x154, 110x180, 170x170 mm

Connector

4-Pin PWM

Bearing

SSO2

Blade Geometry

A-Series with Flow Acceleration Channels

Frame Technology

AAO (Advanced Acoustic Optimisation)

Rotational Speed (+/- 10%)

800 RPM

Rotational Speed with L.N.A. (+/- 10%)

550 RPM

Min. Rotational Speed (PWM, +/-20%)

350 RPM

Airflow

146,9 m/h

Airflow with L.N.A.

100,8 m/h

Acoustical Noise

18,1 dB(A)

Acoustical Noise with L.N.A.

10,7 dB(A)

Static Pressure

1,08 mm HO

Static Pressure with L.N.A.

0,51 mm HO

Max. Input Power

0,96 W

Max. Input Current

0,08 A

Voltage

12 V

Voltage PWM signal

5 V

MTTF

> 150.000 h

Scope of Delivery

Low-Noise Adaptor (L.N.A.)

4-pin y-cable

30cm extension cable

NA-AV3 anti-vibration mounts

NA-AV4 anti-vibration mounts

Fan screws

Warranty

6 years

No additional files, specification sheets, guides or documentation found for product.

Warranty: 6 Year

Full manufacturers warranty details are available at the manufacturers (Noctua) web site.

Unless otherwise specified Techbuy is normally your first point of contact for warranty related returns, further information regarding our warranty policies and consumer guarantees is available on our policies and service & support pages.

To apply for return of a product just go to our returns page.

These terms are in addition to and do not affect any terms, conditions, guarantees and warranties implied by law.

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