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Small square 5 V DC case fan in black plastic frame

Fans

Fans EFWF-45F05M DC5V 0.25A case fan

SKU CH-5A3F-49DW9

Compact 45 mm DC 5 V case fan drawing 0.25 A for targeted component cooling

  • Efficient airflow from compact 5 V DC motor
  • Low 0.25 A draw reduces power load
  • Reliable cooling for tight chassis spaces
  • Simple two-wire connection for quick install
  • Fresh 2021 stock ensures current manufacturing quality

Compact 5 V DC case fan

This 45 mm frame fan runs on a 5 V DC supply and draws 0.25 A. It is designed for tight chassis spaces where a low-voltage header is available. The small footprint suits slim HTPC cases, mini-ITX builds or custom cooling loops that need targeted airflow.

Direct 5 V header replacement

It replaces older 5 V fans that have worn bearings or insufficient static pressure. The upgrade is worth it when the motherboard or controller provides a dedicated 5 V pin header and the existing fan no longer spins reliably. No PWM control is included, so speed scales with voltage alone.

Fits 45 mm mounts with two-wire power

The fan mounts in any 45 mm square opening using standard screw holes. It requires a 5 V DC source capable of at least 0.25 A and a two-pin connector. Because it draws minimal current, it leaves ample headroom on the header for additional low-power fans.

How it compares

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

Price $14.99
Cheaper than about 67% 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 mounting holes does the EFWF-45F05M fan use?

The fan uses standard 45 mm mounting hole spacing for small form factor cases.

How do I connect the EFWF-45F05M to my motherboard?

Connect the two-pin power lead to a 5 V DC header; the fan draws 0.25 A so verify the header current limit first.

When should I replace the EFWF-45F05M fan?

Replace it when bearing noise increases or airflow drops noticeably; the unit was first listed in 2021 so plan for typical small-fan lifespan.

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