Sunon VF40281BX 40mm 12V 25.2W Server Fan 4-wire PWM Speed Control & Monitor

Genuine Sunon Heavy Duty DC Brushless Fan with Speed Monitor (Frequency Generator) and PWM Speed Control.
High reliability. Powerful Airflow. Widely used on computer server cooling systems.

Important: Server fans are noisy when used at their high speed range.

Life Expectancy: 70,000 hours

Size: 40x40x28mm
Voltage: 10.2-13.2VDC, 12V Nominal
Rated Current: 2.1A Typical
Input Power: 25.2W
Speed: >30000RPM (estimate)
Bearing: Precision Ball Bearing
Max Air Flow: 53.5CFM
Acoustical Noise: 72.5 dbA
Locked Rotor Protection: Auto Restart
Safety Approvals: UL, CUL,TUV

Wire Termination: 4-pin, Wafer 1.5mm pitch, or no connector.

Pinout:

Black: (-)-0V
Red: (+12V) - 12V
Yellow: Freq Out – Frequency Output Pulse (NPN Open Collector Output, 12V typ.)
Blue: PWM Input, 5V logic, 25kHz typ. 50kHz Max

Note: This item is an unused (brand new) surplus.
Note: Mfr Datasheet is not available. Shown data are estimates only