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Noctua NF-A4x20
Compact and quiet 40x20mm fan
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A 40x20 mm fan optimized for 5V applications
The NOCTUA NF-A4X20 5V PWM is a compact 40x20 mm fan designed for 5V applications requiring PWM control. Ideal for routers, network switches or other embedded devices, this model combines performance and discretion thanks to advanced technologies such as Flow Acceleration Channels and the AAO frame, thus optimizing airflow and reducing vortex noise.
Performance and versatility
With its NE-FD3 5V PWM circuit integrating Smooth Commutation Drive (SCD) technology, this fan delivers ultra-smooth operation and exceptional longevity thanks to second-generation SSO2 bearings.
The NF-A4X20 5V PWM comes with an OmniJoin adapter set for broad compatibility, even with proprietary connectors. Its modular cabling and 6-year manufacturer warranty make it a premium choice for demanding users.
Main features:
- Size: 40x20 mm
- Voltage: 5V with PWM control
- Technologies: Flow Acceleration Channels, AAO frame, Smooth Commutation Drive (SCD)
- Bearings: SSO2 (second generation)
- Compatibility: OmniJoin adapters for proprietary connectors
- Cabling: modular (20 cm main cable + 30 cm extension)
- 6-year manufacturer warranty
- MTTF: more than 150,000 hours
- Noctua NF-A4x20
- NA-YC1 4-pin PWM splitter cable
- NA-EC1 30cm extension cable
- OmniJoin adapter set
- 4x NA-AV3 anti-vibration mounts
- 4 screws
- 4 vibration dampeners
Select your criteria
General information |
Product name |
Noctua NF-A4x20 |
Brand |
Noctua | |
Model |
NF-A4X20 5V PWM | |
Technical specifications |
Use |
Case |
Luminous |
No | |
Connector(s) |
4-pin Female | |
Reverse (inverted blades) |
No | |
PWM |
Yes | |
Heat Pipe |
No | |
Cooling type |
Active (fansink) | |
Fan diameter |
40 mm | |
Max sound level |
14.9 dB | |
Minimum rotation speed |
0 RPM | |
Maximum rotation speed |
5000 RPM | |
Max airflow |
9.4 m³/h | |
Pressure |
2.26 mm/H2O | |
Bundle |
No | |
Warranties |
Commercial warranty |
Seller 2 years
|
Legal warranty |
See terms & conditions
|
|
Safety Information |
Responsible person |
Noctua SAS |
Postal address |
62 Boulevard de l’Hôpital 75013 Paris France | |
Electronic Address |
Click here
|
See all Noctua products
Product referenced on 2 Jul 2026
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