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Small square 4 cm case fan with black frame and transparent blades

SXDOOL

SXDOOL 4020 12V 0.08A 1608KL-04W-B20 case fan

SKU CH-2K05-Q5Z62

A 4 cm case fan running at 12 V and 0.08 A with a two-wire mute design

  • Original NMB build quality ensures reliable cooling
  • 40 mm compact size fits tight chassis spaces
  • 12 V 0.08 A draws minimal power
  • Two-wire design simplifies installation
  • Mute operation keeps systems quiet

Compact 40 mm case fan

The SXDOOL 4020 is a 40 mm two-wire fan built for tight spaces in PC cases, laptops, servers, power supplies and communication equipment. It runs on 12 V and draws 0.08 A, making it suitable for low-power cooling tasks where a small footprint is required.

Quiet low-power operation

Rated at 12 V and 0.08 A, the fan keeps power draw minimal while the NMB motor design aims for muted acoustics during normal use. The two-wire connection provides simple voltage control without PWM complexity, helping maintain steady airflow in confined enclosures.

Ready to install with no extras

The unit ships as a bare fan without mounting screws, cables or software utilities. Builders must supply their own fixings and connect the two-wire lead directly to a 12 V header or adapter, so plan the mounting method before fitting it into the target chassis.

Highlights

  • Original NMB build quality ensures reliable cooling
  • 40 mm compact size fits tight chassis spaces
  • 12 V 0.08 A draws minimal power
  • Two-wire design simplifies installation
  • Mute operation keeps systems quiet

Specifications

No published specifications for this item yet.

Questions about this item

How do I install the two-wire 12V 0.08A fan in a 4020 mounting pattern?

Align the 40 mm square frame with the case screw holes, connect the two-wire lead to a 12 V header, and secure with four screws; the step often missed is checking airflow direction arrows before tightening.

What maintenance will the 1608KL-04W-B20 bearing need over time?

The sleeve bearing runs maintenance-free until audible noise appears; then replace the entire 4020 unit as the bearing is not user-serviceable.

At what point does the 0.08 A current limit throttle sustained airflow?

Continuous 12 V operation stays within the 0.08 A rating; the first limit is thermal — if case ambient exceeds design range the fan slows to protect the motor.

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