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DC Brushless Fans (BLDC)

Image Part Number Description / PDF Quantity Rfq
9GP5748P5G001

9GP5748P5G001

Sanyo Denki

FAN AXIAL 172X51MM 48VDC WIRE

4
109R0812E401

109R0812E401

Sanyo Denki

DC AXIAL FAN 80X80X25MM TACH

252
109E1724H501

109E1724H501

Sanyo Denki

FAN 172X51MM 24VDC RBLS TACH

0
9CRA0948P0G601

9CRA0948P0G601

Sanyo Denki

DC AXIAL FAN 92X92X76MM PWM

15
109P0412H901

109P0412H901

Sanyo Denki

FAN 40X10MM 12VDC TACH

179
9GA0612P1K601

9GA0612P1K601

Sanyo Denki

FAN 60X38MM 12VDC RBLS TACH,PWM

0
9HV0912P4G0011

9HV0912P4G0011

Sanyo Denki

92X25MM, DC, 12V, HIGH STATIC PR

0
9G1224M1011

9G1224M1011

Sanyo Denki

FAN 120X38MM 24VDC RBLS TACH

62
9LG1448P5G001

9LG1448P5G001

Sanyo Denki

FAN 48VDC 140X51MM TACH/PWM

0
9WG1248F102-E

9WG1248F102-E

Sanyo Denki

FAN 120X38MM 48VDC SPLASH PROOF

0
9WL0948P1H601

9WL0948P1H601

Sanyo Denki

FAN 92X38MM 48VDC IP68 TACH/PWM

63
9G0912S2D01

9G0912S2D01

Sanyo Denki

DC AXIAL FAN 92X92X32MM LOCK

64
9CRE0412P5J03

9CRE0412P5J03

Sanyo Denki

FAN 40X56MM 12VDC LOW VIB

0
9GP1248P1G001

9GP1248P1G001

Sanyo Denki

FAN AXIAL 120X38MM 48VDC WIRE

0
9GT0924P4J001

9GT0924P4J001

Sanyo Denki

FAN 92X25MM 24VDC RBLS TACH, PWM

56
9BD12FC6-1

9BD12FC6-1

Sanyo Denki

BLOWER 76X20MM 12VDC TACH

0
9GA0812P2S001

9GA0812P2S001

Sanyo Denki

FAN 80X32MM 12VDC TACH,PWM

175
9G1224G1D01

9G1224G1D01

Sanyo Denki

FAN 120X38MM 24VDC LOCK

33
109P0812H602

109P0812H602

Sanyo Denki

FAN 80X20MM 12VDC

2
9LG1424A5001

9LG1424A5001

Sanyo Denki

FAN 140X140X51MM 24VDC

12

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

TypeFunctionality FeaturesApplication Examples
40-60mm Mini FansCompact design, low power (2-5W), PWM controlMini PCs, Network routers
80-120mm Standard FansHigh airflow (50-200 CFM), balanced noise-performanceServers, Power supplies
High-Static Pressure FansOptimized blade design (30-60 Pa pressure), dust resistanceTelecom cabinets, Industrial HVAC
Low-Noise FansAerodynamic blades, hydro bearing ( 25 dB(A))Home appliances, Medical equipment
Smart FansIntegrated sensors, IoT connectivity, variable speedData 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

ParameterTypical RangeImportance
Voltage5V to 48V DCSystem compatibility
Current0.1A to 5APower consumption
Speed600-10,000 RPMDetermines airflow
Airflow10-500 CFMCooling capacity
Noise15-55 dB(A)User experience
MTBF50,000-100,000 hoursReliability 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

ManufacturerRepresentative ProductKey Features
NidecUltraFlo 48V Series85% efficiency, 48V/2A, 120mm
Delta ElectronicsAFB1212SHHPWM control, 200 CFM, 25 dB(A)
SunonMGM2201V1-000U-AHydro bearing, 60,000 hours
Minebea25GA048B12HSmart fan with temperature sensor
Mitsubishi ElectricCA040B12HIP55 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%)

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