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Small black square axial fan with terminal wires

Fans

Fans 4020 12V .6W 40x40x20mm 2-wire case fan

SKU CH-ZJG9-WZ62H

A 40 × 40 × 20 mm axial fan running at 12 V and 0.6 W with a two-wire terminal for compact case cooling

  • Compact 40x40x20mm axial fan fits tight builds
  • 12V 0.6W draw keeps power use low
  • 2-wire terminal enables simple plug-and-play install
  • Low-noise axial design suits quiet cooling needs
  • 35000 m3/h max airflow handles demanding heat exchange

Compact 40 mm axial fan for tight spaces

This 12 V Sunon KD1204PKS3 moves air through a 40x40x20 mm frame using only .6 W. Two-wire terminals make it a drop-in replacement for small-form-factor cases, industrial enclosures or appliance cooling where depth is at a premium. Buyers who need higher static pressure or PWM control should look elsewhere.

Two-wire terminal simplifies wiring

Polarity-matched leads plug straight into a 12 V header or Molex adapter without soldering. The thin 20 mm profile fits cramped chassis, but the lack of a tachometer wire means the motherboard cannot monitor speed or trigger alerts if the rotor stalls. Ensure the header supplies a steady 12 V or the fan will not spin.

Verify voltage, clearance

Confirm the target device provides a 12 V DC rail and at least 20 mm of mounting depth. Measure the hole pattern — 40 mm centres — to match existing screw positions. If your board only offers 5 V headers or requires a three- or four-pin PWM interface, this model will not work.

How it compares

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

Price $32.99
Pricier than about 80% 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 do I confirm the 12V .6W fan is running correctly after installation?

Verify the fan spins when the 12V supply is connected; the 2-wire terminal should deliver steady rotation and measurable airflow through the 40x40x20mm frame.

What comes in the box and what must I source separately?

The package contains the SUNON KD1204PKS3 axial fan with attached 2-wire terminal; a 12V power source and mounting screws are not included.

Which 4020 model matches a 12V 0.6W requirement?

The KD1204PKS3 is the 40x40x20mm, 12V, .6W variant listed; choose this version when those exact voltage and power figures are needed.

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