From Makers Electronics's description
GOLDEN SUN KF4010HST DC Fan 12V 50mA 40x40x10mm The GOLDEN SUN KF4010HST is a compact mini fan, its 40 × 40 × 10 mm frame giving it a petite, purposeful presence. In hand, it feels light but solid: the frame has defined edges, each corner precisely formed, and the blade set is housed in a neat square body. The motor hub centers the blades snugly, and the rotor seems proportioned for swift rotation. The finish is smooth, often matte or semi-gloss, giving it a restrained, functional aesthetic. When powered, the fan stirs into life with a soft, constant whir. The blades spin evenly, producing a gentle breeze that belies the unit’s small size. The air movement is focused, pushing through in a narrow column, enough to make its presence felt near the blades. The rotation feels stable no wobble, no audible rasping or judder; the motion is consistent, efficient, and clean. Over continuous operation, the fan quietly becomes part of the environment it doesn’t draw attention to itself. The blades maintain shape, the hub remains concentric, and the frame endures the stress without flex. Dust might collect on the leading edges, but the functional profile stays true. In small enclosures or sensitive electronics, this fan operates as a subtle but reliable agent of airflow, offering steady cooling and airflow without spectacle. Features: Brushless DC motor design (likely) for long service life. Compact, low-profile frame. Balanced rotor for smooth operation. Low vibration and noise characteristics. Standard mounting holes in corners. Efficient airflow relative to size. Specifications: Specification Value Brand: Golden Sun Model: KF4010HST Rated voltage: 12 VDC Rated current: 0.05 A (50 mA) Dimensions: 40 × 40 × 10 mm Blade count: 9 blades Color: Black Connector: JST 2-pin Connector Applications: Cooling of small electronics / PC boards. Embedded systems thermal control. 3D printer controller / driver cooling. Miniature enclosures / boxes. Network devices / routers cooling. Package Contents: 1x GOLDEN SUN KF4010HST DC Fan 12V 50mA 40x40x10mm
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