DC Brushless Fans (BLDC)

Part Number	Description / PDF	Quantity
PE92254B1-000U-A99 Sunon	FAN AXIAL 92X25MM 48VDC WIRE	0
MF40101V2-1000U-A99 Sunon	40X40X10 12VDC VAPO 7CFM	325
PMD4807PTB1-A.(2).U.GN Sunon	FAN AXIAL 70X25MM 48VDC WIRE	0
GF80321B1-000U-AC9 Sunon	FAN 80X32MM 12VDC IP56 59.4CFM	0
PFE0381BX-000U-S99 Sunon	FAN AXIAL 140X38MM 12VDC WIRE	69
4150/MF40100V1-1000U-A99 Sunon	FAN AXIAL 40X10MM VAPO 5VDC	316
HA40101V4-1000U-A99 Sunon	40X40X10 12VDC VAPO 5.4CFM	5357
UB393-500B Sunon	BLOWER 3VDC 9X3MM IP58 TACH	21
PF80201V1-000U-G99 Sunon	FAN AXIAL 80X20MM 12VDC WIRE	0
MF60152V1-1000U-A99 Sunon	60X60X15 24VDC VAPO 26.4CFM	478
UF3H3-500B Sunon	FAN 3VDC 17X3MM IP58 TACH	0
MF20100V1-1000U-A99 Sunon	DC FAN 20X10 5VDC VAPO	209
MF92251V2-1000U-A99 Sunon	92X92X25 12VDC VAPO 45CFM	0
VF40281BX-000U-A9H Sunon	12VDC, 2BALL, 31.5 CFM, AUTO RES	0
4507HQ/MF40101V1-1Q04A-G99 Sunon	DC FAN 40X10MM VAPO FG 3 WIRE	128
PF40281B2-000U-A99 Sunon	FAN 40X28MM 12VDC 18 CFM	165
PMD1204PPB1-A.(2).GN Sunon	FAN AXIAL DUAL 40X56MM 12VDC	113
PF92381BX-000U-S99 Sunon	FAN AXIAL 92X38MM 12VDC WIRE	114
MF60251V1-1000U-A99 Sunon	60X60X25 12VDC VAPO 23.5CFM	6127
MF60101V3-1000U-A99 Sunon	60X60X10 12VDC VAPO 12.2CFM	0

DC Brushless Fans (BLDC)

1. Overview

DC Brushless Fans (BLDC) are electronically commutated fans that use permanent magnet rotors and stationary coil stators. Unlike traditional brushed DC fans, BLDC fans eliminate mechanical brushes, reducing wear and tear while improving efficiency. They play a critical role in modern thermal management systems, ensuring reliable cooling for electronics in computers, industrial equipment, automotive systems, and consumer devices. Their advantages include high energy efficiency (up to 90%+), low noise levels (20-50 dB(A)), and extended operational lifespans (>50,000 hours).

2. Main Types and Functional Classification

Type	Functionality Features	Application Examples
40-60mm Mini Fans	Compact design, low power (2-5W), PWM control	Mini PCs, Network routers
80-120mm Standard Fans	High airflow (50-200 CFM), balanced noise-performance	Servers, Power supplies
High-Static Pressure Fans	Optimized blade design (30-60 Pa pressure), dust resistance	Telecom cabinets, Industrial HVAC
Low-Noise Fans	Aerodynamic blades, hydro bearing ( 25 dB(A))	Home appliances, Medical equipment
Smart Fans	Integrated sensors, IoT connectivity, variable speed	Data centers, EV battery cooling

3. Structure and Components

A typical BLDC fan comprises:

Stator Assembly: Laminated steel core with three-phase windings
Permanent Magnet Rotor: Rare-earth magnets (NdFeB) for high torque
Control Circuit: Hall-effect sensors + MOSFET driver IC for electronic commutation
Bearing System: Ball bearings (70,000 hours L10) or sleeve bearings
Housing: UL94 V-0 rated plastic or aluminum alloy

4. Key Technical Specifications

Parameter	Typical Range	Importance
Voltage	5V to 48V DC	System compatibility
Current	0.1A to 5A	Power consumption
Speed	600-10,000 RPM	Determines airflow
Airflow	10-500 CFM	Cooling capacity
Noise	15-55 dB(A)	User experience
MTBF	50,000-100,000 hours	Reliability indicator

5. Application Areas

Major industries include:

IT & Telecommunications: Server racks, 5G base stations
Industrial Automation: CNC machines, PLC cabinets
Automotive: EV battery cooling, Powertrain systems
Consumer Electronics: Gaming PCs, Smart TVs
Renewable Energy: Solar inverters, Wind turbine controllers

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Features
Nidec	UltraFlo 48V Series	85% efficiency, 48V/2A, 120mm
Delta Electronics	AFB1212SHH	PWM control, 200 CFM, 25 dB(A)
Sunon	MGM2201V1-000U-A	Hydro bearing, 60,000 hours
Minebea	25GA048B12H	Smart fan with temperature sensor
Mitsubishi Electric	CA040B12H	IP55 rating, 40mm industrial fan

7. Selection Guidelines

Key considerations:

Match voltage with system power supply
Calculate required airflow using Q=1.76 (P/ T) formula
Select bearing type based on operating environment
Verify acoustic compliance (ISO 13347-1 standard)
Assess control interface (PWM vs. analog voltage)
Evaluate environmental ratings (IP, EMC, RoHS)

8. Industry Trends

Future developments include:

Integration with IoT sensors for predictive maintenance
Adoption of 48V systems in data centers for energy efficiency
Development of ultra-thin fans ( 10mm) for mobile devices
Use of AI algorithms for dynamic speed optimization
Advancements in fluid-dynamic bearings for noise reduction
Growth in automotive applications (EV battery cooling market CAGR: 18.7%)