Description
The Sunon EF75251B1-Q020-S99 is a moderate-speed DC Axial Fan with dimensions of 70 x 70 x 25 mm. It operates on a nominal voltage of 12 VDC. The fan achieves a speed of 5500 RPM, consuming 2.25 W of power and drawing a maximum current of 0.1875 A. It delivers a maximum air flow of 97.4 m³/h (57.3 CFM) and a maximum static pressure of 89.2 Pa (0.358 inAq). This four-wire fan features a durable Ball Bearing system, enabling both precise PWM speed control and tachometer feedback, making it ideal for variable cooling requirements in optical equipment like projectors.
EF75251B1-Q020-S99 Fan Parameters
Model: EF75251B1-Q020-S99
Manufacturer: Sunon
Type: DC Axial Fan (PWM Control, Tachometer)
Dimensions (measuring): 70 x 70 x 25 mm
Nominal Voltage: 12 VDC
Voltage Range: 6 VDC ~ 13.8 VDC
Speed: 5500 RPM (Controlled via PWM)
Power Consumption: 2.25 W
Current Draw: 0.1875 A
Max. Airflow: 97.4 m³/h (57.3 CFM)
Max. Static Pressure: 89.2 Pa (0.358 inAq)
Noise Level: 49.0 dB(A)
Weight: 0.090 kg
Housing Material: Thermoplastic PBT (UL94V-0)
Impeller Material: Thermoplastic PBT (UL94V-0)
Number of Blades: 7
Bearing Type: Ball Bearing
Motor Design: Brushless DC Motor
Motor Protection: Locked Rotor Protection, Auto-Restart
Termination: 4 Wire Leads (PWM Input)
Monitor Output: Yes (Tachometer/FG, PWM Control)
Service Life L10 at 40 °C: 60000 h
Min. Ambient Temperature: -10 °C
Max. Ambient Temperature: 70 °C
Approvals: UL, cUL, CE, TUV
Application
The Sunon EF75251B1-Q020-S99 fan is primarily designed for cooling high-intensity light sources and optical engines within **digital projectors** and industrial imaging equipment. The four-wire configuration allows the projector’s control system to precisely manage fan speed (and thus noise) based on internal temperature, ensuring optimal image quality and user experience while managing heat output.
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