Noctua NF-A14 5V PWM 140mm Cabinet Fan

Noctua NF-A14 5V PWM 140mm Cabinet FanFeaturePremium quiet fan, 140x140x25mm, 5V, 4-pin PWM, max. 1500 RPM, max. 24.6 dB(A), >150,000 h MTTFAward-winning 140x25mm A-series design with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance5V 4-pin PWM version (1500rpm maximum speed) with polarity protection for 5V applications with PWM speed controlUSB power adaptor cable allows the fan to run on devices with USB host ports, power banks or USB power supplies such as those used by smartphonesIncludes anti-vibration mounts, fan screws, extension cable and OmniJoin adaptor set for connection to proprietary fan headersAward-winning NF-A14 designHaving received more than 100 awards and recommendations from the international press, Noctua’s NF-A14 has become a proven premium choice for 140mm cooling needs. Its renowned efficiency has convinced tens of thousands of customers all over the world.5V PWM version5V fans are used in various devices and applications. With the included USB power adaptor cable and OmniJoin™ adaptor set, the NF-A14 5V PWM is a proven premium solution that gives you full flexibility both for replacing existing 5V fans and for new, custom applications.Flow Acceleration ChannelsThe NF-A14 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 frameNoctua‘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 DesignNoctua’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 MicrostructuresWith 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 padsIntegrated 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 SCDSupporting fully automatic PWM speed control, the NF-A14 5V PWM uses Noctua’s novel, custom-designed NE-FD3 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.Polarity protectionAs many devices using 5V fans feature proprietary connectors, and documentation of the pin alignment may not be available, the fan features an integrated diode for polarity protection. This way, you’re on the safe side if you accidentally connect it with reverse polarity.SSO2 BearingThe NF-A14 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.Metal bearing shellIn order to guarantee the highest possible degree of manufacturing precision, minimum tolerance and excellent long-term stability, the NF-A14 sports a CNC milled bearing shell made entirely from brass.