The DC 5V 3007 Blower Fan is a versatile low-voltage cooling component designed for applications requiring balanced airflow and compact dimensions, such as automotive infotainment systems, home appliances, and small-scale industrial automation equipment. Its “3007” form factor—30mm in width, 30mm in height, and 7mm in depth—strikes a balance between size and performance, while its 5V operating voltage ensures compatibility with low-power circuits and battery-powered devices.

Airflow capacity, the primary performance metric of this blower fan, is defined by its ability to move a consistent volume of air (measured in cubic feet per minute, CFM) while maintaining sufficient static pressure to overcome enclosure resistance. At 5V, the fan operates at a rotational speed of 7,000 to 9,000 RPM, delivering an airflow range of 4.5 to 6.5 CFM—significantly higher than smaller 2006 blower fans (2.5–4.0 CFM) and suitable for cooling larger components like small microprocessors (e.g., Raspberry Pi 4) or compact power inverters. This airflow is directed through a centrifugal impeller and a narrow outlet, creating a focused air stream that can be channeled via ducts or vents to target specific hotspots—an advantage over axial fans, which disperse air more broadly.

Several design features contribute to the 3007 blower’s airflow efficiency. First, its backward-curved impeller blades minimize air turbulence, reducing pressure loss and ensuring that a higher percentage of the fan’s rotational energy translates to usable airflow. Second, the fan’s sealed housing prevents air leakage, directing nearly all airflow through the outlet rather than escaping around the fan’s edges—critical for enclosed environments like a car’s dashboard infotainment unit, where airflow must be channeled to cool a touchscreen controller and a small CPU. Third, the BLDC motor’s precise speed control (often via a 2-pin or 3-pin connector) allows for dynamic airflow adjustment: at lower speeds (5,000 RPM), the fan delivers 2.5–3.5 CFM for light cooling needs (e.g., idle mode in a smart thermostat), while ramping up to 6.5 CFM at full speed (9,000 RPM) for high-load scenarios (e.g., a portable 3D printer’s control board during printing).

Static pressure, while secondary to airflow for this model, averages 25 to 35 Pa—enough to push air through thin filters (e.g., dust filters in home air purifiers) or small ductwork without significant airflow reduction. Energy efficiency is also a highlight: the fan draws just 0.25 to 0.4A at 5V, making it suitable for battery-powered devices like portable coolers or outdoor security cameras, where power conservation is essential. Real-world testing in a Raspberry Pi 4 setup (with a heatsink and a 3D-printed duct) showed that the 3007 blower reduced CPU temperatures by 15–20°C during 4K video playback compared to passive cooling, confirming its ability to deliver consistent, targeted airflow for small-scale cooling needs.