The EFB0412HHD-R00 is a DC brushless axial flow fan manufactured by Delta Electronics with a two-phase, four-pole motor configuration. It operates at a rated voltage of 12 VDC with an operational range of 7.0 to 13.8 VDC, delivering a maximum air flow of 0.267 m³/min (9.43 CFM) at zero static pressure and a maximum air pressure of 9.00 mmH2O at zero air flow. The fan features a speed of 8200 RPM (reference), low input current of 0.10 A (maximum 0.15 A), and acoustic noise averaging 30.5 dB-A (maximum 34.0 dB-A). The unit incorporates two ball bearings, plastic frame and impeller (UL 94V-0), and includes a rotation detection signal output with open-collector mode capability. With a rated life expectancy of 70,000 hours of continuous operation at 40°C and 15–65% RH, along with locked rotor protection and polarity protection features, this fan is well-suited for cooling applications in industrial equipment, telecommunications systems, and consumer electronics requiring reliable thermal management.