9A0824S4021

Power (Watts):	2.40W
Lifetime @ Temp.:	40000 Hrs @ 60°C
Material - Blade:	Plastic
Material - Frame:	Plastic
Voltage Range:	12 ~ 27.6VDC
Approvals:	CSA, TUV, UL
Operating Temperature:	-4 ~ 158°F (-20 ~ 70°C)
Ingress Protection:	--
Termination:	2 Wire Leads
RPM:	3400 RPM
Series:	San Ace 80
Noise:	34.0 dB(A)
Features:	--
Fan Type:	Tubeaxial
Bearing Type:	Ball
Air Flow:	42.4 CFM (1.19m³/min)
Width:	25.00mm
Size / Dimension:	Square - 80mm L x 80mm H
Voltage - Rated:	24VDC
Part Status:	Active

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DC Fans Application Field and Working Principle

DC fans are a type of fan, widely used as a cooling tool in the electronics industry, providing ventilation and air exchange. DC fans use direct current (DC) power to operate, and consist of blades that rotate dynamically to push air out and generate airflow. The fans are generally used in applications where a low power fan is required, or a device needs to be cooled without a considerable noise impact. This makes them ideal for use in opto-electronic, instrumentation and medical devices, as well as in audio and video equipment, computers, and UPS systems. In the case of the 9A0824S4021 DC fan, it is designed to efficiently draw air through a system like an enclosure, cooling its components along the way. It has a compact design, with its impeller diameter measuring 80mm and a low overall profile of 25 mm. It also has a low-temperature 10V-14.5V input, a protection circuit, and a sintered bearing type, with a bearing service life of up to 50,000 hours.

DC Fans Working Principle

DC fans are powered by direct current (DC), which means that they don\'t require an external power supply to operate. Instead, the fans are powered by a small DC motor which is connected to the fan\'s impeller blades. When the motor is energized, the blades start to rotate, creating a powerful airflow. In the 9A0824S4021 DC fan, the motor is driven by a Hall effect sensor, which generates a positive or negative pulse based on the magnet\'s proximity. When the motor is activated, the sensor sends a pulse to the motor, which causes the motor to rotate and circulate the air. This action then brings fresh air into the device, and blows hot air out, thus cooling it down. The fan has several components that help guarantee the highest level of performance and protection. These include a self-lubricating bearing with a built-in filter, a protection circuit, and an anti-vibration stabilizer, among others. The Hall effect sensor is an important part of the design, as it helps to make sure that the fan operates as intended. The sensor measures the speed at which the fan is rotating, and can adjust it accordingly. This allows the fan to operate faster or slower depending on the current temperature, ensuring the best cooling performance possible.

Conclusion

DC fans are designed to efficiently cool electronic components, providing ventilation for them in the process. The 9A0824S4021 DC fan is a great example of this, as it utilizes a Hall effect sensor to measure the speed at which it is circulating air. This ensures the fan operates at optimal performance, providing the best possible cooling with the lowest noise emission. It is also protected with various components, providing reliable protection over long-term use, making it an ideal choice for cooling any system or enclosure.

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