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Noctua NE-FD1 PWM IC

Noctua’s custom-designed NE-FD1 is a next-generation PWM fan driver IC that integrates Smooth Commutation Drive (SCD) technology for quieter operation and allows for ultra-low power consumption. Its superb linearity and security features such as locked rotor or reverse voltage protection make it an ideal driver IC for premium-class PWM fans.

PWM Output Signals Compared

Most conventional PWM fan driver ICs put out square signals that cause sudden torque impulses. These impulses can cause minute deformations of the entire fan structure which lead to audible “clicking” noises that are especially noticeable with many common PWM fans running at slower speeds. Adopting Noctua’s Smooth Commutation Drive (SCD) technology, the custom designed NE-FD1 PWM IC slows down the slew rate of the output signal in order to give a smoother, less sudden torque impulse. This way, PWM switching noises can be effectively suppressed and the fan runs even quieter, especially at low speeds.

Noctua’s NE-FD1 IC was not only fine-tuned for superior quietness, it has also been carefully optimised to allow for ultra-low power consumption. For example, the NE-FD1 based PWM version of the award-winning NF-R8, NF-B9 and NF-P12 fans consume 25-40% less power than their non-PWM counterparts. The NF-F12 120mm fan featuring the NE-FD1 IC draws only 0.6W, which is more than 50% less than many fans in the same speed range. This doesn’t only make it eco-friendly but also cuts down the electricity bill: Compared to a typical 2W fan, this allows you to save about half the price of the NF-F12 after 5 years of continuous use.

27.01.2015 - NH-D15
Test verdict: "Noctua has raised the bar once more for high end air cooling products: the NH-D15 is without a doubt a stellar performer, in combination with the two included brilliant 140mm PWM fans it still keeps noise level reduced to a minimum. Even when running the D15 with a single centered fan the cooling performance is more than adequate to cool down your overclocked processors. Noctua has provided every accessory you need with this NH-D15, from the big thermal paste syringe to the Low Noise Adapters, everything you will need is included." (Albrecht Mesotten,

27.01.2015 - NH-D15
Test verdict: "Siamo lieti di attribuire al Noctua NH-D15 il gold Award per prestazioni, rumorosità ed efficienza!" (Davide Torno,

27.01.2015 - NF-F12 industrialPPC-2000 PWM
Test verdict: "Obě nové řady jsou velmi vítaným zpestřením nabídky ventilátorů." (Jan Stach,

26.01.2015 - NH-U9S
Test verdict: "Lo consigliamo a tutti coloro i quali volessero un dissipatore molto compatto, potente e silenzioso, per l'integrazione in sistemi micro-ATX, ed anche mini-ITX (ma attenzione all'altezza)." (Matteo Trinca,