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Noctua NF-A4x20 5V, Premium Quiet Fan, 3-Pin, 5V Version (40x20mm, Brown)

4.8 out of 5 stars 2,153 ratings

S$22.90
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40x20mm
5 Volt

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About this item

  • Premium quiet fan, 40x40x20 mm, 5V, 3-pin Molex, 5000 RPM, 14.9 dB(A), >150,000 h MTTF
  • Award-winning A-series design with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance
  • 40x20mm size ideal for 1U applications or replacing fans in network and storage equipment (routers, switches, NAS etc.) or other devices such as DVRs
  • 5V 3-pin version (5000rpm) for 5V-based industrial applications or replacing 5V fans in various devices
  • Includes anti-vibration mounts, fan screws, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers

Frequently bought together

  • Noctua NF-A4x20 5V, Premium Quiet Fan, 3-Pin, 5V Version (40x20mm, Brown)
  • +
  • Noctua NF-A9x14 PWM, Premium Quiet Fan, 4-Pin (92x14mm, Brown)
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Noctua NF-A4x20 5V, Premium Quiet Fan, 3-Pin, 5V Version (40x20mm, Brown)


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NF-A4x20 5V header

Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and Noctua’s AAO frame, the NF-A4x20 5V is a dedicated 5V version of Noctua’s highly optimised, premium quality quiet 40x20mm fan. Smooth Commutation Drive technology and Noctua’s reference class SSO2 bearings ensure superb running smoothness and excellent long-term stability. Topped off with modular cabling and the OmniJoin Adaptor Set, the NF-A4x20 5V is a premium choice for demanding 5V applications.

NF-A4x20 PWM NF-A4x20 FLX NF-A4x20 5V PWM NF-A4x20 5V
NF-A4x20 PWM NF-A4x20 FLX NF-A4x20 5V PWM NF-A4x20 5V
Connector 4-pin PWM 3-pin 4-pin PWM 3-pin
Voltage 12V 12V 5V 5V
RPM Max: 5000 / Min: 1200 5000 Max: 5000 / Min: 1200 5000
RPM with L.N.A. 4400 4400 - -
RPM with U.L.N.A. - 3700 - -
Acoustical Noise 14,9 dB(A) 14,9 dB(A) 14,9 dB(A) 14,9 dB(A)
Acoustical Noise with L.N.A. 12,2 dB(A) 12,2 dB(A) - -
Acoustical Noise with U.L.N.A. - 8,5 dB(A) - -
Size 40x40x20 mm 40x40x20 mm 40x40x20 mm 40x40x20 mm
Colour Brown & Beige Brown & Beige Brown & Beige Brown & Beige

Customer reviews

4.8 out of 5 stars
4.8 out of 5
2,153 global ratings

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KJ44
5.0 out of 5 stars Glad I bought a Noctua
Reviewed in the United Kingdom 🇬🇧 on 3 April 2022
Size Name: 40x20mmStyle Name: 5 VoltVerified Purchase
One person found this helpful
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Steve M.
5.0 out of 5 stars As lovely as a fan can get
Reviewed in the United Kingdom 🇬🇧 on 9 November 2018
Size Name: 40x20mmStyle Name: 5 VoltVerified Purchase
7 people found this helpful
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Ade
5.0 out of 5 stars Noctua, king of fans!
Reviewed in the United Kingdom 🇬🇧 on 5 January 2022
Size Name: 40x20mmStyle Name: 12 VoltVerified Purchase
One person found this helpful
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Harry Shelton
5.0 out of 5 stars Near Silent
Reviewed in the United Kingdom 🇬🇧 on 18 December 2022
Size Name: 40x20mmStyle Name: 12 VoltVerified Purchase
Kim Green
5.0 out of 5 stars EXCELLENT!! Very Very Quiet!! Great Quality!! Great Accessories!! Perfect to keep Valve Amp Cool.
Reviewed in the United Kingdom 🇬🇧 on 13 April 2018
Size Name: 40x20mmStyle Name: 12 VoltVerified Purchase
4 people found this helpful
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