DC Fan ■ Features Low Noise and Energy Saving Compared to our current model,(1) noise level has been more than halved(2) and power consumption has been reduced by 39%.(3) Moreover, the models with PWM control, which enables the control of fan speed, provide further optimized noise level and efficiency. Long Life This fan lasts 1.5 times longer than the current model,(1) and is capable of continuous operation for 60,000 hours (approximately 7 years), improving the maintainability. Rich Lineup The product lineup is available in a wide variety in 12/24/48 voltage, cooling performance, noise level, and PWM control. This allows users to choose the most suitable one for their applications. (1) Current model: 120 x 120 x 25 mm San Ace 120 9G type DC Fan (model: 9G1212G401). (2) A 4 dB(A) decrease in noise level. The models listed below have ribs and pulse sensors with PWM control function. For models without ribs, append "1" to the end of model numbers. Models with the following sensor specifications are also available as options: Without sensor Lock sensor

■ Airflow - Static Pressure Characteristics PWM duty cycle Operating voltage range Static pressure Static pressure Static pressure Static pressure Operating voltage range Operating voltage range (inch H2O) (Pa) Static pressure Static pressure Static pressure Static pressure PWM duty cycle (inch H2O) (Pa) Operating voltage range (inch H2O) (Pa) Static pressure Static pressure Static pressure Static pressure Static pressure Static pressure

120 × 120 × 25 mm ■ Airflow - Static Pressure Characteristics Operating voltage range (inch H2O) (Pa) Static pressure Static pressure ■ PWM Duty - Speed Characteristics Example (min-1) 5000 ■ PWM Input Signal Example Input signal waveform VIH = 4.75 to 5.25 V　VIL = 0 to 0.4 V PWM duty cycle (%) = T ×100 PWM frequency 25 (kHz) = T Current source (Isource) = 1.0 mA max. (when control voltage is 0 V) Current sink (Isink) = 1.0 mA max. (when control voltage is 5.25 V) When the PWM control terminal is open, the fan speed is the same as the speed at 100% PWM duty cycle. Either a TTL input or open collector/drain...

■ Example of Connection Schematic Rated voltage 12/24 V fan ■ Specifications for Pulse Sensors Output waveform (Need pull-up resistor) Output circuit: Open collector Inside of DC fan In case of steady running ＋ ○ Pull-up resistor Pull-up voltage Ic Sensor output (VCE) Rated voltage 12/24 V fan VCE = +30 V max. Ic=5 mA max. [VOL=VCE (SAT)=0.4 V max.] Rated voltage 48 V fan VCE = +60 V max. Ic=5 mA max. [VOL=VCE (SAT)=0.4 V max.] ■ Dimensions (unit: mm) (With pulse sensor with PWM control function) 120±0.8 104.8±0.3 Airflow direction Rotating direction ■ Reference Dimensions of Mounting Holes and...