ARCTIC S12038-8K server fan, 120 × 120 × 38 mm, 4-pin
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Choose countryThe ARCTIC S12038-8K is a 120 × 120 × 38 mm fan designed for continuous cooling in servers and industrial systems. It fits server cases from 3U and can replace a CPU or radiator fan, or provide system ventilation.
Adjustable airflow
Speed can be adjusted from 800 to 8000 rpm using PWM or voltage regulation. Maximum airflow is 370 m³/h, while static pressure of 37 mm H₂O helps move air through closely spaced cooling fins.
- Bearing construction: two Japanese ball bearings in a brass housing support impeller stability.
- Active motor cooling: an additional impeller in the fan hub cools the motor.
- Motor protection: reverse polarity, overvoltage and overcurrent protection are provided.
Connection and power
The fan has a 4-pin connector and a 300 mm cable. It also supports connection and control through 2-pin or 3-pin headers. It requires 12 V DC power, with a specified current of 2.2 A and a maximum current of 3.2 A.
| Speed | 800–8000 rpm |
|---|---|
| Airflow | 220 CFM / 370 m³/h |
| Static pressure | 37 mm H₂O |
| Bearing | Dual ball bearing with brass housing |
| Speed control | PWM |
| Voltage / current | 12 V DC / 2.2 A |
| Maximum current | 3.2 A |
| Starting voltage | 6.5 V DC |
| Connector | 2510 4-pin fan connector |
| Flammability rating | UL 94 V-0 |
| Motor protection | Reverse polarity, overvoltage and overcurrent protection |
| Cable length | 300 mm |
| Colour | Black |
| Dimensions | 120 × 120 × 38 mm |
| Weight | 328 g |
| Operating mode | Designed for continuous operation |
| Additional speed regulation | Voltage regulation |
| Server case format | From 3U |
| Motor cooling | Active cooling via an additional impeller in the fan hub |
| Other connection options | Connection and control via 2-pin or 3-pin headers |
| EAN | 4895213704762 |
|---|
Can it connect to a 3-pin header?
Yes. Although it has a 4-pin connector, it also supports connection and control through 2-pin or 3-pin headers.
Which server cases does it fit?
It fits server cases from 3U. The fan measures 120 × 120 × 38 mm.












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