DA08025B12UH 4-Wire Cooling Fan: Complete Technical Guide for Industrial Automation Applications
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What is the DA08025B12UH fan?
The DA08025B12UH is an 80 × 80 × 25 mm DC axial cooling fan built by Shenzhen Huaxia Hengtai Electronic (the "M" mark on the hub label) — DC 12 V at 0.50 A, and the four-wire version of the 8025 size: red and black carry the supply, yellow returns the speed (tach) signal, blue takes the PWM speed-control input, all four landing in a white 4-pin connector. The label carries the cUL US recognition and CE marks over MADE IN CHINA, and the leads are printed UL1007 24 AWG 80 °C. Two units, new, as photographed. All 5 photos and 1 video below show these exact fans.
Part details
| Field | Value |
|---|---|
| Model | DA08025B12UH |
| Maker | Shenzhen Huaxia Hengtai Electronic Co Ltd ("M" logo on label) |
| Type | 80 × 80 × 25 mm DC axial cooling fan (from the DA08025 designation) |
| Supply | DC 12 V, 0.50 A |
| Connection | 4-wire (red / yellow / blue / black) to a white 4-pin connector — supply, tach, PWM |
| Lead spec | UL1007 style, 24 AWG, 80 °C (printed on the insulation) |
| Certifications on hub | cUL US recognized, CE |
| Origin | Made in China, as recorded |
| Quantity | 2 units, new |
Every value above is read from the hub label and the photographed connector; no performance figures are claimed beyond what the label states.
What the four wires buy you
The 8025 frame is the mid-size workhorse of electronics cooling — power supplies, amplifiers, compact controllers, 3D-printer electronics bays — and the difference between this fan and a plain two-wire unit is control. Two conductors power it. The third, yellow, is the tachometer: two pulses per revolution the host board counts to verify the fan is actually spinning. The fourth, blue, is the PWM control input: the board can throttle the fan down when the enclosure is cool and ramp it up under load, trading noise for cooling exactly where it is needed. The UH suffix on the model marks this full-feature build; replacing a failed UH unit with a two-wire look-alike restores airflow but blinds both the speed supervision and the quiet mode. Match all four conductors and the keyed white 4-pin housing when ordering, and the pin order too — reversing tach and PWM on a 4-pin header is the classic no-spin fault. At 12 V / 0.50 A the draw is modest enough to hang directly on a supply rail without a driver stage. Two fresh units are photographed here — one in service, one on the shelf.
Photos and video
All images below are original KOEED warehouse photos. Click any photo to view it full size.
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