DC Brushless Fans (BLDC)

Part Number	Description / PDF	Quantity
9G0648P4S0011 Sanyo Denki	FAN 60X25MM 48VDC RBLS TACH,PWM	0
9GA0824P6G001 Sanyo Denki	FAN 80X20MM 24VDC TACH,PWM	625
109R0612S4011 Sanyo Denki	FAN 60X25MM 12VDC RBLS TACH	0
9HVA0812P1G001 Sanyo Denki	FAN 80X38 12VDC TACH,PWM	206
9G0612G101 Sanyo Denki	FAN 60X38MM 12VDC TACH	0
9GA0912P1H03 Sanyo Denki	FAN 92X38MM 12VDC TACH,PWM	38
9S1212L4011 Sanyo Denki	FAN 120X25MM 12VDC RBLS TACH	0
109R0812T4H122 Sanyo Denki	FAN 80X25MM 12VDC THERM	0
9LG1412M5001 Sanyo Denki	FAN 140X140X51MM 12VDC	12
9HVB0812P1G001 Sanyo Denki	80X38MM, DC, 12V, HIGH STATIC PR	17
9A0612G4021 Sanyo Denki	FAN 60X25MM 12VDC RBLS	2
9TGA48P0G001 Sanyo Denki	CENTRIFUGAL FAN 48VDC 175X69MM	4
9LG1424M5D001 Sanyo Denki	FAN 140X140X51MM 24VDC	11
9GV0312E3011 Sanyo Denki	FAN 38X28MM 12VDC VANE RBLS TACH	91
9GA0912M401 Sanyo Denki	FAN 92X92X25MM 12VDC	59
109R0624G4021 Sanyo Denki	FAN 60X25MM 24VDC RBLS	0
9WL1424P1H001 Sanyo Denki	FAN 24VDC 140X38MM TACH/PWM	0
9G0648S1021 Sanyo Denki	FAN 60X38MM 48VDC RBLS	25
9SG1224P1G01 Sanyo Denki	FAN 120X38MM 24VDC RBLS TACH,PWM	122
9WF0424H701 Sanyo Denki	FAN 40X15MM 24VDC OIL PROOF TACH	160

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%)