Fans
Fans 4715KL-04W-B50 12038 120mm 38mm 12V 1.3A 3600 rpm 2-wire case fan
120 mm case fan with double ball bearing, 3600 rpm and 3.68 m³/min airflow
- High airflow of 3.68 m³/min cools components efficiently
- Double ball bearing rated 50,000 hours L10 at 25 °C
- Wide voltage range DC 8 V to 12.6 V for flexible power
- Flame-retardant PBT frame meets VO safety standard
- 3600 rpm delivers strong static pressure of 110 Pa
Purpose-built 12038 server fan
The 4715KL-04W-B50 is a 120mm by 38mm case fan designed for 12V DC systems that need high static pressure. It draws 1.30A at 15.6W and spins at 3600 rpm to deliver 3.68 m3/min of airflow. The two-wire connection suits legacy headers or direct wiring.
Thermals and acoustics at nominal speed
At 25°C ambient the double ball bearing runs within an 8V to 12.6V range and produces a noise figure of 50 while generating 110Pa of wind pressure. The PBT frame and blades meet VO-grade flame retardant standards and operate from -10°C to 70°C. Rated lifetime is 50000 hours L10.
Sustained-load behaviour
Continuous operation at 3600 rpm maintains the stated airflow and pressure without thermal throttling because the motor stays within its insulation class E limits. The maintenance-free bearing construction avoids lubricant degradation over the 50000-hour rating. Performance remains stable across the full voltage window.
Highlights
- High airflow of 3.68 m³/min cools components efficiently
- Double ball bearing rated 50,000 hours L10 at 25 °C
- Wide voltage range DC 8 V to 12.6 V for flexible power
- Flame-retardant PBT frame meets VO safety standard
- 3600 rpm delivers strong static pressure of 110 Pa
Specifications
No published specifications for this item yet.
Questions about this item
How do I connect the 2-wire 12V 1.3A fan to a standard four-pin motherboard header and which step is often missed?
Plug the two leads into the outer 12 V and ground pins of the four-pin header; the missing step is leaving the PWM and sense pins empty so the fan runs at full 3600 rpm.
What part will need replacement after the rated 50000 hours at 25 °C and what bearing type is used?
The maintenance-free NMB double ball bearing is the wear item; after 50000 hours at 25 °C the L10 lifetime is reached and the fan should be replaced.
At what ambient temperature does the fan hit its upper operating limit during sustained use?
The upper limit is 70 °C; beyond this the insulation class E and PBT frame ratings are exceeded and sustained operation is not supported.
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