The Sunon A2175-HBT TC GN is a 17x17x25 mm high-speed axial fan with a Brushless DC Motor. It offers a top-of-the-line level of cooling performance with its three-phase internal rotor, high-performance bearings and long-life operation. Featuring a low starting voltage and noise levels, the fan can be used for a variety of applications including cooling equipment, computer cases and other electronics requiring active cooling. Rated at 17 cfm, the fan has a rotational speed of 4,200 RPM and a maximum noise of 17 dBA. With temperature detection and a thermal control system, the fan can reduce noise levels and extend its life. The Sunon A2175-HBT TC GN is UL, C-UL, and TUV safety certified and RoHS compliant.