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Small square 4020 case fan with black frame and transparent blades

Fans

Fans 4020 5V 0.7W KD0504PKB3 case fan

SKU CH-2ZSN-XRC3G

A 40 mm square, 20 mm thick case fan running at 5 V and 0.7 W

  • Compact 5 V fan draws only 0.7 W for low-power cooling
  • 40 mm × 40 mm × 20 mm frame fits tight chassis spaces
  • SUNON KD0504PKB3 motor built for continuous operation
  • 5 V DC input works directly from motherboard header

SUNON 4020 5 V case fan

This SUNON 4020 fan measures 4 cm square and runs on 5 V power. It draws 0.7 W and carries the KD0504PKB3 model code. The compact frame suits tight chassis spaces.

Ideal for small-form-factor builds

It suits builders who need a 5 V 4020 replacement. It is not for systems that need a different voltage, a larger frame or higher airflow.

How it compares

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

Price $12.99
Cheaper 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

What power connector does the 5V 0.7W KD0504PKB3 fan require?

The fan runs on 5 volts and draws 0.7 watts, so it needs a 5 V header or adapter that can supply at least that power.

Will the 4020 fan fit in the same mounting holes as my existing 40 mm fans?

Yes, the 4020 designation means a 40 mm square frame with 20 mm thickness, matching standard 40 mm mounting patterns.

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