As USB-powered electronic products continue to become thinner, lighter, and more compact, thermal management has become an increasingly important design challenge. Limited internal space often leaves very little room for conventional cooling solutions, requiring highly customized airflow systems and ultra-compact cooling fans.
To support the development of a new USB product, an Australian customer partnered with EISKUHL to develop a miniature cooling solution using a custom DC 5V ultra-thin blower fan. The project required an extremely compact structure while still maintaining stable airflow and reliable cooling performance.
After successful engineering cooperation, prototype validation, and interface customization, the customer proceeded with a 1K trial production order.
The customer is a technology company in Australia developing compact USB-powered electronic products with strict space limitations inside the enclosure.
Application:
USB electronic products
Compact embedded cooling system
The product design required active cooling to ensure stable operating temperatures during continuous use. However, due to the ultra-thin product structure, the available installation space for the cooling fan was extremely limited.
Extremely Limited Installation Space
The customer reserved only:
18mm × 4mm installation space
for the internal cooling fan.
This created several engineering challenges:
Standard blower fans could not physically fit
Airflow performance needed to be maintained despite miniaturization
The cooling solution had to integrate seamlessly with the customer’s PCB and enclosure structure
For compact USB devices, even slight dimensional deviations could affect assembly and product reliability.
Despite the small size, the customer still required sufficient airflow and pressure performance to support heat dissipation inside the enclosure.
Target performance included:
High rotational speed
Stable airflow output
Reliable operation under low-voltage conditions
Product Interface Compatibility
The customer’s hardware interface required customized wiring and terminal configuration. Off-the-shelf fan connectors could not directly match the product design.
To address these challenges, EISKUHL developed a customized ultra-thin blower cooling solution based on a miniature DC 5V blower fan platform.
Ultra-Thin Compact Design
The selected blower fan dimensions were:
17 × 17 × 3.4mm
This ultra-thin structure allowed the fan to fit perfectly within the customer’s extremely limited 18mm × 4mm reserved installation space.
The compact design makes the solution ideal for:
USB products
Portable electronics
Embedded cooling systems
Space-constrained electronic devices
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To accelerate the customer’s product development process, EISKUHL provided detailed:
3D drawings
Structural design data
Assembly reference support
These materials enabled the customer to conduct:
Structural simulation
Internal airflow analysis
Pre-assembly verification
before final hardware integration.
This engineering collaboration helped reduce development risk and shorten the customer’s validation cycle.
The customized blower fan solution included the following specifications:
|
Specification |
Details |
|
Fan Type |
DC Blower Fan |
|
Dimensions |
17 × 17 × 3.4mm |
|
Rated Voltage |
5V DC |
|
Working Voltage |
3.3V |
|
Speed |
17,500 RPM |
|
Static Pressure |
5.4 / 12.5 mmH2O |
|
Current |
0.075 / 0.11A |
|
Wiring |
3-wire with PWM |
|
Connector |
Customizable |
|
Application |
USB Product Cooling |
Ultra-Thin Structure
The fan’s 3.4mm thickness makes it suitable for extremely compact product designs where conventional cooling fans cannot fit.
Efficient Heat Dissipation
Despite its miniature size, the blower fan delivers stable airflow and static pressure performance for localized heat dissipation.
Flexible Customization
EISKUHL supports:
Wiring customization
Terminal modification
PWM control integration
OEM and structural adaptation
This flexibility allows the fan to be integrated into a wide range of compact electronic products.
Low-Voltage Operation
The fan supports operation at 3.3V, making it suitable for USB-powered and low-voltage electronic systems.
Following successful sample testing and structural verification, the customer confirmed the cooling solution for their new product development project.
After evaluation, the customer officially placed a:
1K trial production order
This marked the successful transition from development stage to pilot production.
This project demonstrates EISKUHL’s ability to deliver highly customized cooling solutions for space-constrained electronic products. By combining ultra-thin fan design, engineering support, and interface customization, EISKUHL successfully helped the Australian customer overcome complex thermal and structural challenges.
The customized 17×17×3.4mm DC blower fan achieved stable cooling performance within an extremely limited installation space, supporting the successful development of the customer’s next-generation USB product.
EISKUHL specializes in advanced thermal management solutions, including miniature blower fans, DC axial fans, frameless fans, and customized cooling systems for compact electronics, industrial equipment, automotive systems, and embedded applications. With strong OEM/ODM capability and engineering support, EISKUHL provides reliable, high-performance cooling solutions tailored to demanding application environments.
