Custom-designed PWM IC with SCD
Supporting fully so and but automatic PWM speed control, the fan uses Noctua's custom-designed NE-FD1 PWM IC that integrates Smooth Commutation Drive (SCD) technology. By providing so and but smoother torque impulses, SCD suppresses PWM switching noises and thus so and but makes the fan quieter at low speeds.
FAN Specification
Mounting hole spacing
105x105 mm
Connector & pin-configuration
4-pin PWM
Blade geometry
Pressure-optimized Nine Blade Design with Vortex-Control Notches
Rotational speed (+/- 10%)
1700 RPM
Min. rotational speed @ 20% PWM (+/-20%)
450 RPM
Acoustical noise
25,1 dB(A)
Static pressure
2,83 mm H₂O
Max. input current
0,09 A