noctua nf-a4x20 flx 40mm 3pin ファン 20mm厚 冷却ファン ケースファン noctua featuring advanced aerodynamic design measures such as flow acceleration channels and noctua’s aao frame, the nf-a4x20 is a highly optimised, premium-quality quiet fan in size 40x20mm. the flx version provides 5000/4400/3700rpm speed settings via the supplied low-noise adaptors and includes the omnijoin adaptor set for easy connection to proprietary fan headers. its superb running smoothness, reference-class sso2 bearing and noctua’s trusted premium quality make it an elite choice for the highest demands. <br><br>size 40x40x20 mm <br>mounting hole spacing 32x32 mm <br>connector 3-pin <br>bearing sso2 <br>blade geometry a-series with flow acceleration channels <br>frame technology aao (advanced acoustic optimisation) <br>rotational speed (+/- 10%) 5000 rpm <br>rotational speed with l.n.a. (+/- 10%) 4400 rpm <br>rotational speed with u.l.n.a. (+/- 10%) 3700 rpm <br>airflow 9,4 m3/h <br>airflow with l.n.a. 8,3 m3/h <br>airflow with u.l.n.a. 6,9 m3/h <br>acoustical noise 14,9 db(a) <br>acoustical noise with l.n.a. 12,2 db(a) <br>acoustical noise with u.l.n.a. 8,5 db(a) <br>static pressure 2,26 mm h2o <br>static pressure with l.n.a. 1,75 mm h2o <br>static pressure with u.l.n.a. 1,23 mm h2o <br>max. input power 0,6 w <br>max. input current 0,05 a <br>voltage 12 v <br>mttf > 150.000 h <br>scope of delivery low-noise adaptor (l.n.a.) 、ultra-low-noise adaptor (u.l.n.a.) 、30cm extension cable 、omnijoin adaptor set 、na-av3 anti-vibration mounts 、fan screws <br>warranty 6 years