Overview
This fan is aimed at equipment that generates heat in a small volume: power supplies, chargers, drive boards and compact inverters. It moves air directly across the components rather than around them, which is what a short internal path allows.
The range lists both airflow and static pressure, which matters here: a fan pushing through a tight fin stack needs pressure, not just free-air volume. Pick on the pressure figure if the air has to pass a heatsink.
Where it fits
- Switch-mode power supplies
- Battery chargers and adapters
- Drive and control boards
- Compact inverters and converters
Specifications
| MODEL | Voltage (VDC) | Rated Voltage （VDC） | Current (AMP) | Speed (RPM) | Air Flow (m3/hr) | Air Flow (CFM) | Static Pressure （mmH2O） | Noise Lp:dB(A) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|
| HD50105LS(B) | 5 | 3.5 | 0.1 | 3500 | 17.51 | 10.3 | 1.58 | 26.2 | 18 |
| HD50105MS(B) | 5 | 3.5 | 0.16 | 4500 | 20.91 | 12.3 | 2.28 | 30.1 | 18 |
| HD50105HS(B) | 5 | 3.5 | 0.31 | 5000 | 24.99 | 14.7 | 3.23 | 33.9 | 18 |
| HD501012LS(B) | 12 | 6 | 0.07 | 3500 | 17.51 | 10.3 | 1.58 | 26.2 | 18 |
| HD501012MS(B) | 12 | 6 | 0.09 | 4500 | 20.91 | 12.3 | 2.28 | 30.1 | 18 |
| HD501012HS(B) | 12 | 6 | 0.12 | 5000 | 24.99 | 14.7 | 3.23 | 33.9 | 18 |
| HD501012DS(B) | 12 | 6 | 0.17 | 5500 | 29.92 | 17.6 | 3.87 | 39.3 | 18 |
Selection and installation notes
Where the fan discharges into a confined space, make sure the air has a way out. A fan that pressurises a sealed compartment only stirs hot air.
Dust on the blades is the most common cause of imbalance and noise in this class. Fit a filter or a mesh where the intake faces a dirty environment.
FAQ
How do I choose between models?
Start with the voltage available and the space, then compare airflow at the static pressure your heatsink creates. Free-air figures overstate performance in a restricted path.
Is it suitable for continuous operation?
Yes, with the right bearing. Ball bearings suit continuous duty and higher ambient; sleeve bearings are better for intermittent, cooler, horizontal use.
Can it be mounted vertically?
Ball-bearing versions can. Sleeve bearings wear faster in a vertical position, particularly at higher temperatures.
Do you supply connectors?
Lead wire length and connector type can be specified for OEM orders. Send the harness drawing or a sample.
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