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Small square 4020 case fan with black frame and transparent blades

Fans

Fans 4020 12V Speed Measurement Silent Fan JPD0402012MA3A11 case fan

SKU CH-57HC-K1SG1

4cm 12V case fan with speed measurement for quiet cabinet cooling

  • 12 V operation for stable power delivery
  • 4020 frame fits compact cabinet spaces
  • Speed measurement enables precise RPM monitoring
  • Silent design reduces audible noise levels

Compact 12V case fan with speed monitoring

This 4020 form-factor fan runs on 12 V and includes a tachometer output so the system can track rotor speed in real time. It is intended for tight chassis positions such as small-form-factor cases, server blades or industrial cabinets where a 40 mm frame is the only option. Builders who need active airflow in a restricted slot will find it a direct fit.

Steady airflow under continuous duty

The motor is rated for constant 12 V operation, so airflow remains stable during extended workloads rather than dropping off after a brief spin-up. Speed feedback lets the motherboard or fan controller adjust PWM curves to keep thermals in check without overshooting acoustic limits. It is not suited for builds that require larger-diameter fans or higher static pressure for dense radiator stacks.

How it compares

Measured against everything we stock in PC Cooling Fans, at today’s prices. Recalculated every night.

Price $13.99
Cheaper than about 70% of the 8,339 comparable items (median $19.99).

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Specifications

No published specifications for this item yet.

Questions about this item

How loud is the 4020 fan when running continuously at 12V?

The 4020 12V fan is described as a silent model, designed for low-noise operation during extended use.

What power connector does the JPD0402012MA3A11 need to run?

It requires a standard 12V power connection compatible with typical computer cabinet fan headers.

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