Miniature Airflow Solution for Compact Electronic Devices
SZR 40mm DC blower fans are specially engineered for compact electronic assemblies that require concentrated airflow inside extremely limited spaces. Compared with traditional axial fans, the centrifugal air outlet structure enables directional airflow delivery and stronger air pressure performance in confined equipment layouts.
The 4010 and 4020 models utilize lightweight impeller construction and optimized airflow channels to improve cooling efficiency while maintaining low power consumption and reduced acoustic output. These compact blower units are suitable for portable electronics and miniature thermal management systems.
Mechanical Construction
The fan housing and impeller are manufactured from UL94V-0 flame-retardant thermoplastic material to improve operational safety and structural durability.
The 4010 model adopts a slim 10mm thickness design for ultra-thin installations. The thicker 4020 structure provides additional impeller depth, increasing airflow volume and static pressure for applications with moderate airflow resistance.
Precision-balanced rotor components help reduce vibration during high-speed operation and improve operational stability over long working periods.
Technical Specifications
| Parameter | 4010 | 4020 |
| Dimension | 40×40×10 mm | 40×40×20 mm |
| Rated Voltage | 5V / 12V DC | 5V / 12V DC |
| Operating Voltage | 4.5–5.5V / 10.8–13.2V | 4.5–5.5V / 10.8–13.2V |
| Speed | 5000–7000 RPM | 5200–7200 RPM |
| Air Flow | 1.83–2.50 CFM | Higher than 4010 |
| Static Pressure | 1.90–4.49 mmH₂O | Enhanced Pressure Output |
| Noise Level | 23.3–30.3 dB(A) |
Moderate |
| Bearing Type | Sleeve / Ball Bearing |
Sleeve / Ball Bearing |
| Weight | 12 g | Approx. 16 g |
| Material | UL94V-0 PBT Plastic | UL94V-0 PBT Plastic |
| Certification | CE / RoHS | CE / RoHS |
Product Advantages
• Compact centrifugal airflow design for restricted spaces
• Side exhaust structure simplifies internal airflow routing
• Low power consumption for portable electronics
• Stable airflow under confined ventilation conditions
• Optional dual ball bearing for extended operating life
• Custom lead wire and connector configurations available
Typical Applications
• Portable handheld electronics
• Miniature 3D printers
• Smart IoT control gateways
• Compact medical instruments
• Embedded cooling systems
• Small consumer appliances
Frequently Asked Questions
Q: Which model is suitable for ultra-thin equipment?
A: The 4010 version is optimized for installations with extremely shallow mounting depth.
Q: Does the 4020 provide stronger cooling performance?
A: Yes. The increased thickness improves impeller efficiency and airflow pressure.
Q: Are long-life bearings available?
A: Ball bearing versions are available for continuous-duty operation.
Q: Can wiring be customized?
A: SZR supports customized cable lengths, terminals and connector types.
Engineering & OEM Support
SZR provides OEM and thermal design support for miniature cooling projects. Customized voltage configurations, speed adjustments and connector solutions are available for specialized applications.
Hot Tags: 40mm dc blower fan, China 40mm dc blower fan manufacturers, suppliers, factory
