FFB0412VHN 4cm 12V 0.24A Cooling Fan for Power Supply Unit PSU APW9
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FFB0412VHN 40mm 12V Cooling Fan for Bitmain APW8 / APW9 PSU
The FFB0412VHN from Delta Electronics is a 40 x 40 x 28mm 12V DC brushless tubeaxial cooling fan, designed to keep the airflow stable inside Bitmain APW8 and APW9 PSUs. With a 9500 RPM rated speed, 15.8 CFM air flow and 0.509 inH₂O (126.8 Pa) static pressure, it delivers the strong, focused airflow required to pull heat out of densely packed mining PSUs.
A ball bearing assembly and locked-rotor protection give long service life under continuous duty, with a 70 000-hour lifetime at 40°C. It is one of the most common direct-replacement fans for PSU servicing on Bitmain APW8 / APW9 power supplies.
Specifications
| Parameter | Value |
|---|---|
| Part number / Base | FFB0412VHN (base: FFB0412) |
| Manufacturer | Delta Electronics |
| Condition | New |
| Category | DC brushless fan (tubeaxial) |
| Voltage rated | 12VDC |
| Voltage range | 4.5V to 13.8VDC |
| Current rating | 0.160A |
| Power | 1.92W |
| Size | 40mm x 40mm x 28mm |
| Air flow | 15.8 CFM (0.442 m³/min) |
| Static pressure | 0.509 inH₂O (126.8 Pa) |
| Speed | 9500 RPM |
| Noise | 45.0 dB(A) |
| Bearing | Ball |
| Termination | 2-wire leads |
| Features | Locked-rotor protection |
| Operating temperature | -10°C to +70°C (14°F to 158°F) |
| Lifetime | 70 000 hours @ 40°C |
| Frame / blade material | Plastic / plastic |
| Weight | 32.21g (0.071 lb) |
| Application | Bitmain APW8 / APW9 PSU cooling |
Where the FFB0412VHN fits in the APW8 / APW9
Inside the Bitmain APW8 and APW9 PSUs, the 40 x 40 x 28mm form factor sits on the air-out side of the PSU enclosure, pulling heat off the PFC MOSFETs, output stage and bulk capacitors. The 9500 RPM rated speed combined with the 126.8 Pa static pressure makes it well suited to push air through the tight internal baffles of a mining PSU.
Compatibility
Direct replacement for the 4028 (40x40x28mm) 12V two-wire fan on Bitmain APW8 and APW9 PSUs. The base product number is FFB0412 — confirm the rotation direction and connector pin-out before final assembly. For 60mm replacements on APW3/APW7/APW12 PSUs, see the FD6025B12H in related products.
Common failure symptoms
- PSU goes into thermal shutdown — fan stopped spinning
- Audible click or grinding from the ball bearing
- Rotor jammed by dust ingress — locked-rotor protection latches the fan off
- Fan spins below rated RPM, causing PFC MOSFETs to overheat
- Two-wire lead frayed at the strain entry into the fan hub
Frequently asked questions
Is this a two-wire or four-wire fan?
It is a two-wire 12V DC fan (power + ground). For PWM-controlled positions you need a different fan variant.
Can I use it on an APW3 or APW7?
The APW3 / APW7 typically use a 60x60x25mm fan such as the FD6025B12H. The FFB0412VHN is specifically the 40mm format for APW8 / APW9.
How long does the fan last?
Datasheet rating is 70 000 hours at 40°C ambient. In a mining deployment, ambient is usually higher — plan preventive replacement on long-running PSUs.
Do you stock matching PSU repair parts?
Yes — we carry 25V/220µF caps, 30A ceramic fuses and 650V MOSFETs commonly replaced on APW8 / APW9 alongside the fan.
Related products
- FD6025B12H 60mm Cooling Fan for APW3 / APW7 / APW12
- 25V 220µF Aluminum Electrolytic Capacitor for APW3++
- 30A 250V Ceramic Fuse for PSU Repair
- SVS47N60PN N-channel MOSFET for Antminer PSU
Contact contact@lys-sz.com for volume pricing or compatibility questions.
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