The 255/2N from EBM-Papst is a compact DC axial fan from the 250 series, designed for 5 VDC and belonging to the category of DC fans. With dimensions of 25 × 25 × 8 mm and a mass of only 5 g, it is perfectly suited for applications where space is limited but reliable airflow is a requirement.
The fan is well-suited for cooling electronics, embedded systems, and compact devices where low noise levels and stable operation are crucial. The built-in speed signal (/2) allows for easy external speed monitoring.
- Voltage: 5 VDC (operating range 4.5–5.5 VDC)
- Airflow: 3.5 m³/h
- Speed: 9,600 rpm
- Power: 0.4 W
- Sound pressure level: 16 dB(A)
- Bearing type: sintered bearing, lifespan 40,000 hours
- Housing: fiberglass-reinforced plastic (PBT), 25 × 8 mm
- Connection: single leads AWG 28, TR 64
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Technical specifications
Datasheet (PDF) - download| Product attribute | Value |
|---|---|
| Airflow at 0 Pa | 3.5 m³/h |
| Speed | 9600 rpm |
| Power | 0.4 W |
| Voltage | 5 VDC VAC |
| Motor frame | The fan has a glass-fiber reinforced plastic (PBT) housing measuring 25 x 8 mm. Connection is made via single wires of type AWG 28 with TR 64 specification. The fan's mass is 5 g. The fan is part of Series 250 with speed signal (/2) for external speed monitoring. |
| Casing | glass-reinforced plastic (PBT), 25 x 8 mm |
| Impeller | The fan impeller is made of glass-fiber reinforced plastic (PA) and rotates counter-clockwise when viewed from the rotor side. The airflow is directed outwards over the struts (exhaust over struts). The nominal airflow is 3.5 m³/h at a nominal speed of 9,600 rpm. The sound pressure level is 16 dB(A). |
| Bearing type | sintered bearing |
| Rotation direction | counter-clockwise, viewed from the rotor side |
| Motor type | The motor is a DC axial fan motor designed for a 5 VDC nominal voltage with an operating range of 4.5–5.5 VDC. Power consumption is 0.4 W at nominal voltage and 20 °C. The operating temperature range is -10 to +70 °C. The motor is equipped with sintered bearings with an expected lifetime of 40,000 hours under standard conditions. |
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