F-4008H12B / F-4008H12B-02 - 40x40x8mm 12V 0.18A 3-Pin Brown Connector Ultra-Thin Cooling Fan

This ultra-thin DC brushless cooling fan measures 40mm × 40mm × 8mm and operates at 12V DC with a rated current of 0.18A. Its compact axial design provides active cooling in electronic equipment with extremely limited installation space.

This listing is specifically for the version fitted with the brown three-pin connector shown in the product photographs. Part numbers F-4008H12B and F-4008H12B-02 identify the same replacement-fan configuration covered by this page.

Technical Specifications

• Product Type: Micro cooling fan
• Primary Model Number: F-4008H12B
• Alternate Model Number: F-4008H12B-02
• Fan Type: Axial
• Motor Type: DC brushless
• Dimensions: 40mm × 40mm × 8mm
• Frame Size: 40mm
• Fan Thickness: 8mm
• Rated Voltage: 12V DC
• Rated Current: 0.18A
• Maximum Calculated Input: 2.16W
• Wire Count: Three wires
• Wire Colors: Red, black, and yellow
• Connector Type: Three-pin keyed connector
• Connector Color: Brown
• Profile: Ultra-thin
• Application: Compatible electronic equipment originally using the exact fan and brown three-pin connector configuration
• Package Contents: One cooling fan
• Included Hardware: Fan only unless additional hardware is specifically shown

Interchangeable / Replacement Part Numbers

F-4008H12B, F-4008H12B-02

These two references identify the same 40mm × 40mm × 8mm 12V 0.18A three-wire fan configuration with the brown three-pin connector shown in the product photographs.

⚠️ Critical Connector Compatibility Notice

This page is specifically for the brown three-pin connector version.

Before ordering, compare the replacement fan with the original and confirm all of the following:

• F-4008H12B or F-4008H12B-02 part number
• 40mm × 40mm frame dimensions
• 8mm fan thickness
• 12V DC voltage rating
• 0.18A current rating
• Three-wire cable
• Brown three-pin connector
• Matching connector shape and keying
• Matching electrical pin sequence
• Matching wire length and cable-exit position
• Matching mounting-hole arrangement
• Correct airflow direction

A three-pin connector of another color or shape should not automatically be considered interchangeable. Small fan connectors can have different keying, pitch, polarity, and wire arrangements even when they have the same number of pins.

Do not connect the fan based only on wire color. Compare the connector orientation and pin sequence with the original fan before applying power.

✅ Confirmed Compatibility

Compatibility is limited to equipment originally fitted with the exact 40mm × 40mm × 8mm 12V 0.18A fan and matching brown three-pin connector.

✔️ F-4008H12B Applications: Equipment originally using F-4008H12B with the matching brown three-pin connector, wire sequence, mounting arrangement, and fan dimensions
✔️ F-4008H12B-02 Applications: Equipment originally using F-4008H12B-02 with the matching brown three-pin connector, wire sequence, mounting arrangement, and fan dimensions
✔️ Exact-Spec Cooling Applications: Electronic equipment designed for a 40mm × 40mm × 8mm 12V 0.18A three-wire axial fan with the identical brown connector and pinout

Compatibility should not be determined from the fan dimensions or voltage alone. The connector, polarity, cable length, mounting points, and available installation clearance must also match.

☑️ Key Features

☑️ F-4008H12B and F-4008H12B-02 replacement references
☑️ Ultra-thin 40mm × 40mm × 8mm construction
☑️ 12V DC operation
☑️ 0.18A rated current
☑️ DC brushless motor
☑️ Axial airflow design
☑️ Three-wire cable
☑️ Brown three-pin keyed connector
☑️ Compact profile for space-restricted electronic equipment
☑️ Fan-only replacement component

⚙️ Fit Notes

• This listing is specifically for the brown three-pin connector version shown in the product photographs.
• Confirm either F-4008H12B or F-4008H12B-02 on the original fan or equipment records.
• Compare the original connector from the front and side to confirm its shape and locking features.
• Confirm that the three wires enter the connector in the same order.
• Do not assume that every three-pin fan uses the same electrical pinout.
• A white, black, or differently shaped three-pin connector may not be interchangeable.
• Do not substitute a two-wire or four-wire fan.
• Do not substitute a 5V or 24V fan.
• Confirm the complete 40mm × 40mm × 8mm dimensions before ordering.
• A thicker 40mm fan may interfere with the surrounding heatsink, circuit board, enclosure, or expansion slot.
• Match the original cable length and cable-exit direction.
• Install the replacement with the same airflow direction as the original fan.
• Keep the cable clear of the rotating fan blades.
• The listing includes the fan only unless mounting hardware or other components are specifically shown.
• Disconnect the equipment from power before removing or installing the fan.
• After installation, confirm that the fan starts immediately and rotates freely without rubbing or producing unusual noise.