D14BH-12 Industrial Cooling Fan: Complete Technical Guide for PLC Systems
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What is the D14BH-12 cooling fan?
The D14BH-12 is a 140 mm square axial cooling fan from Yate Loon Electronics (YL FAN), running on DC 12 V at 0.70 A — the (L-S01) build of the D14BH family that the label confirms on the yellow hub sticker. It is a plain two-wire fan: red and black leads into a small white 2-pin connector, no tachometer wire, no PWM control — power it and it runs at full speed. This size (140 × 140 × 25 mm as recorded) is the workhorse class for inverter cabinets, server chassis and PLC enclosure ventilation. The photos show three units, hubs stamped with the cUL US and CE marks and the date code 1001. All 5 photos and 1 video below show these exact fans.
Part details
| Field | Value |
|---|---|
| Model | YL FAN D14BH-12 (L-S01) |
| Maker | Yate Loon Electronics (YATE LOON ELECTRONICS on the label) |
| Type | DC axial cooling fan |
| Supply | DC 12 V, 0.70 A (GP) |
| Frame size | 140 × 140 × 25 mm, as recorded at intake |
| Connection | Red/black 2-wire leads, white 2-pin connector (as photographed) |
| Certifications on hub | cUL US recognized, CE, Bauart geprüft |
| Date code | 1001 |
| Quantity | 3 units shown in the photo set |
Every value above is read from the hub label and the photographed connector; no performance figures are claimed beyond what the label states.
Where a 14025 two-wire fan fits
The 140 × 140 × 25 mm footprint is one of the most common service sizes in industrial cooling: inverter drive heatsinks, server power-supply walls, control-cabinet exhaust panels and PLC enclosure ventilation all standardise on it, which is why the D14BH-12 keeps getting specified years after its production date code. The (GP) suffix on the rating marks the general-purpose build — sleeve or one-ball bearing construction meant for horizontal or vertical mounting in free-air cabinets, not the high-static-pressure variants used against dense heatsink fins. Because it is a two-wire fan, it has no speed signal and no control input: it spins whenever 12 V is present. That makes it the right choice for unmonitored cabinet ventilation, and the wrong choice where a controller expects a tach feedback line — check the connector on the failed fan before ordering, since the same frame ships with 3-pin tach and 4-pin PWM versions. The cUL US and CE marks on the hub cover the compliance case for enclosure builders. For a failed fan, replacement is mechanical: four corner screws through the 140 mm panel cutout, the 2-pin plug keyed so it cannot be reversed onto the supply.
Photos and video
All images below are original KOEED warehouse photos. Click any photo to view it full size.
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