Overview
This DC 12V brushless cooling fan is a practical 80mm axial fan designed for electronics thermal management where consistent airflow and straightforward wiring are required. With a standard 80x80mm footprint and 25mm thickness, it fits many common CPU heatsinks, PC cases, and project enclosures. The 2-wire interface keeps installation simple: connect the red/positive lead to +12V DC and the black/negative lead to ground, and the fan runs at its designed operating speed (speed and airflow depend on the specific fan design and load conditions).
Technical Details
The fan uses a brushless DC (BLDC) motor architecture. In a BLDC fan, electronic commutation replaces mechanical brushes, which typically improves service life and reduces electrical noise from brush arcing. Internally, a driver circuit energizes the stator coils based on rotor position, maintaining rotation under varying load. Because this is a 2-wire model, it is intended primarily for constant-voltage operation and does not provide a dedicated tachometer (RPM sense) output or a PWM control input. Speed control, if required, is commonly achieved by adjusting the supply voltage or using an external DC fan controller; results vary by controller type and fan revision, and some low-voltage operation may cause unreliable starting depending on the motor driver design.
At 12V DC, the rated current is 0.30A, which implies a nominal electrical input power of approximately 3.6W (P = V × I). Actual draw can vary with startup conditions, bearing friction, airflow restriction (filters, grills, dense heatsinks), and manufacturing tolerances. For power planning, ensure your 12V supply can provide at least the rated current per fan with additional headroom for startup. Observe polarity carefully; reversing polarity may prevent operation and can damage the internal driver circuit.
Specifications
- Fan type: Brushless DC axial fan
- Rated voltage: DC 12V
- Rated current: 0.30A (at rated voltage)
- Nominal power: ~3.6W (calculated from provided V and A; actual varies)
- Wiring: 2-wire (power only: V+ and GND)
- Frame size: 80 x 80 mm
- Thickness: 25 mm
- Speed (RPM): Not specified; check datasheet or label if available
- Airflow (CFM) / static pressure: Not specified; depends on blade design and motor speed
- Noise level (dBA): Not specified; varies by fan design and mounting
- Bearing type: Not specified; varies by module revision (sleeve/ball/hydraulic depending on model)
- Mounting: Standard 80mm fan mounting pattern (hole spacing varies by standard; confirm with your enclosure/heatsink)
Applications
- CPU heatsink and PC case ventilation (80mm fan positions)
- Cooling for power supplies, DC-DC converters, inverters, and battery chargers
- Thermal management for 3D printer control boxes, stepper drivers, and hot-end electronics compartments
- Network equipment cooling (routers, switches, mini PCs, DVR/NVR enclosures)
- DIY electronics enclosures, test benches, and lab instruments requiring forced airflow
- LED driver and amplifier cabinet ventilation where 12V DC fans are preferred
Integration Notes
- Power: Use a regulated 12V DC source capable of supplying at least 0.30A per fan, plus headroom for startup and simultaneous loads.
- Polarity: Connect V+ to +12V and GND to 0V. If wire colors differ from common conventions, verify with the fan label or a multimeter.
- Control: As a 2-wire fan, there is no tach output. For speed reduction, use a DC fan controller or lower voltage; ensure the fan reliably starts at the chosen setting.
- Mounting & airflow: Maintain clearance at intake and exhaust. Restrictive grills, dust filters, or dense heatsinks can reduce airflow and increase load.
- Protection: Consider adding a fuse or current-limited supply in prototypes to protect wiring and the fan driver from accidental shorts.
Included Components
1x DC 12V 80x80x25mm 2-wire brushless cooling fan
