NF-A20 PWM
High-efficiency quiet 200x30mm fan
Award-winning quality, 20cm size
With 154mm, 110x180mm and 170mm hole spacing
SSO2 Bearing
Second generation of Noctua's renowned SSO bearing
4-pin PWM version
For automatic speed control
Key specifications
Size (Form factor) | 200 x 200 x 30 mm |
Speed range | 350 – 800 rpm |
Airflow (max.) | 146.9 m³/h (86.46 CFM) |
Acoustical noise (max.) | 18.1 dB(A) |
Static pressure (max.) | 1.08 mm H₂O |
Rated voltage | 12 V |
Input power (typical) | 0.82 W |
Connector | 4-pin |
Colour | Brown |
Warranty | 6 years |
Scope of delivery
- NA-RC6 Low-Noise Adaptor (L.N.A.)
- NA-YC1 4-pin PWM splitter cable
- NA-EC1 30cm extension cable
- 4x NA-AV3 anti-vibration mounts
- 4x NA-AV4 anti-vibration mounts
- Fan screws
Extended specifications
Mechanical specifications
Dimensions without anti-vibration pads | 200 x 200 x 30 mm |
Dimensions with anti-vibration pads | 200 x 200 x 32 mm |
Frame shape | Square |
Mounting hole spacing(s) | 170 x 170 mm, 154 x 154 mm, 110 x 180 mm |
Weight | 370 g |
Material frame | PBT GF30 |
Material impeller | PP GF10 |
Material anti-vibration pads | Silicone rubber |
Bearing | SSO2 |
Rotational direction | Counter-clockwise |
Frame colour | Beige |
Impeller colour | Brown |
Anti-vibration pads colour | Brown |
Connector type | A2543-4PIN (or equal) |
Cable length | 200 mm |
Cable length with extension cable (included) | 500 mm |
Wire | 24 AWG |
Sleeving | Fibreglass silicone mesh |
Performance specifications
Rotational speed (max.) | 800 rpm |
Rotational speed with LNA (max.) | 550 rpm |
Rotational speed @ 20% PWM | 310 rpm |
Rotational speed @ 0% PWM | 350 rpm |
Acoustical noise (max.) | 18.1 dB(A) |
Acoustical noise with LNA (max.) | 10.7 dB(A) |
Airflow (max.) | 146.9 m³/h (86.46 CFM) |
Airflow with LNA (max.) | 100.8 m³/h (59.33 CFM) |
Static pressure (max.) | 1.08 mm H₂O |
Static pressure with LNA (max.) | 0.51 mm H₂O |
Electrical specifications
Motor type (phases) | Single phase |
Poles | 4 |
Slots | 4 |
Driver IC | NE-FD1 |
Rated voltage | 12 V |
Starting voltage | 11 V |
Max. operating voltage | 13.2 V |
Pin configuration |  |
Pin 1 | Black: Ground (GND) |
Pin 2 | Yellow: Voltage (Vcc) |
Pin 3 | Green: RPM Signal |
Pin 4 | Blue: PWM Signal |
Input power (max) | 0.96 W |
Input power (typical) | 0.82 W |
Input current (max) | 0.08 A |
Input current (typical) | 0.07 A |
Safety, compliance & environmental specifications
Safety standards | EN62368-1 |
EMC standards | EN55032, EN55035 |
UL | |
CE | |
UKCA | |
TÜV | |
Production Standards | ISO 9001 & ISO 14001 |
Flammability | UL 94 V-0 |
REACH | |
RoHS | |
CMRT | |
EMRT | |
Ingress protection | IP50 |
Operating temperature | -10°C to +70°C |
Operating humidity | 15 – 90 % |
Storage temperature | -20°C to +75°C |
Storage humidity | 15 – 90 % |
MTTF | > 150,000 h |
Locked rotor protection | Auto power off after locked at rated voltage for 1 sec. After auto power off, the circuit attempts to restart in 2 to 6 sec. |
Polarity protection | Open circuit when Vcc & GND are exchanged. Circuit won't be burned within 5 sec when Vcc & GND are exchanged. |
Overvoltage protection | |
Overcurrent protection | |
Insulation resistance | 10 MΩ / between unshielded wire and frame at 500 VDC/min |
Dielectric strength | 5 mA max. / measured between lead wire (+) and frame at 500 VAC/min |
Logistical specifications
Packaging dimensions | 285 x 285 x 38 mm |
Packaging weight (including product) | 705 g |
EAN | 9010018100013 |
UPC | 841501110016 |
Packaging unit | 10 pcs |
Packaging unit dimensions | 315 x 300 x 420 mm |
Packaging unit weight | 8.1 kg |