Axial fan No name SEPA MFB40H12 12 V DC 185 l/min 40×40×10 mm

Axial fan SEPA MFB40H12 (No name) is a compact 40×40×10 mm cooling fan designed for low-profile ventilation in electronics and small enclosures. Powered by 12 V DC, it provides an airflow of up to 185 l/min to support heat dissipation from circuit boards, power supplies and network devices. The slim form factor and standard mounting holes allow integration into crowded assemblies and DIY projects where space is limited.

Advantages

The fan combines a small footprint with a relatively high airflow for its size, enabling effective cooling in compact applications. Its 12 V DC operation makes it compatible with common electronics power rails. The low-profile 40×40×10 mm design is suitable for tight spaces and facilitates mounting in stacked or shallow enclosures. Construction and blade geometry are optimized to deliver a steady airflow while keeping installation straightforward.

Suitable for

• Cooling small PCBs and single-board computers
• Ventilation in compact enclosures and network devices
• Active cooling for power supplies and transformers in confined spaces
• DIY electronics projects and custom rack or box builds

Key specifications

• Dimensions: 40 × 40 × 10 mm
• Operating voltage: 12 V DC
• Airflow: up to 185 l/min
• Axial fan design, low-profile frame
• Standard mounting hole pattern for small fans

How to use

Install the fan in a location that allows unobstructed intake and exhaust airflow. Match the polarity when connecting to a 12 V DC supply and ensure the supply can deliver the required current for continuous operation. Secure the fan using appropriate screws or mounts for the 40×40 mm size, taking care to avoid compressing or obstructing the blades. Position the fan so that the airflow direction moves hot air away from heat-sensitive components.

Usage recommendations

For reliable performance, keep the fan and surrounding vents free from dust and debris; periodic cleaning extends service life. When integrating into sensitive electronics, consider adding a simple vibration-damping mount and verify the electrical load on the 12 V rail. If noise is a concern, operate at reduced voltage or use pulse-width modulation control where the device and application allow.