DC Brushless Fans (BLDC)

Part Number	Description / PDF	Quantity
109P0605H701 Sanyo Denki	FAN 60X15MM 5VDC TACH	1176
9G0612P4H001 Sanyo Denki	DC AXIAL FAN 60X60X25MM PWM	486
9GA1212P4S0011 Sanyo Denki	FAN AXIAL 120X25.4MM 12VDC WIRE	24
9GA0424P3J0011 Sanyo Denki	FAN 40X28MM 24VDC RBLS TACH,PWM	437
9G0924A201 Sanyo Denki	FAN 92X32MM 24VDC TACH	371
9CR0812P8S03 Sanyo Denki	FAN 80X80MM 12VDC DUAL TACH,PWM	42
9WP0812G401 Sanyo Denki	FAN 80X25MM 12VDC IP68 TACH	161
9SG5724P5H61 Sanyo Denki	FAN 172X51MM 24VDC RBLS	54
109R0612M402 Sanyo Denki	FAN 60X25MM 12VDC	138
109P0624J701 Sanyo Denki	FAN 60X15MM 24VDC TACH	0
9TD12P6G001 Sanyo Denki	70X20MM 12VDC CENT TACH/PWM	0
9HVA0812P1G0011 Sanyo Denki	FAN 80X38 12VDC RBLS TACH,PWM	27
9S0612F402 Sanyo Denki	FAN 60X25MM 12VDC	79
9GV0824P4K01 Sanyo Denki	FAN 80X25MM 24VDC VANE TACH,PWM	144
9GV0612P1G031 Sanyo Denki	FAN 60X38MM 12VDC VANE RBLS	24
9WL1448P1M001 Sanyo Denki	FAN 48VDC 140X38MM TACH/PWM	12
109E1724H502 Sanyo Denki	FAN 172X51MM 24VDC RBLS	49
9A0812S4011 Sanyo Denki	FAN 80X25MM 12VDC RBLS TACH	189
109P0405H702 Sanyo Denki	FAN 40X15MM 5VDC	64
109P0412J3013 Sanyo Denki	FAN 40X28MM 12VDC TACH	2390

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%)