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DC Brushless Fans (BLDC)

Image Part Number Description / PDF Quantity Rfq
FAD1-08032CBLW12

FAD1-08032CBLW12

Qualtek Electronics Corp.

FAN AXIAL 80.5X32MM 12VDC WIRE

106576
OD9225-48HSS

OD9225-48HSS

Orion Fans

FAN AXIAL 92.5X25MM 48VDC WIRE

0
DC0603812L2B-2T0

DC0603812L2B-2T0

Wakefield-Vette

FAN 12VDC 60X38MM 2WIRES

0
FDD1-17238EBHW43-L

FDD1-17238EBHW43-L

Qualtek Electronics Corp.

FAN AXIAL 172X38.5MM 48VDC WIRE

0
AFB0705MC-00F0R

AFB0705MC-00F0R

Delta Electronics / Fans

65.8X13.0MM 5V DV AXIAL FRAMELES

0
OD2506-12LSS

OD2506-12LSS

Orion Fans

FAN AXIAL 25X6MM 12VDC WIRE

0
109P0412K3013

109P0412K3013

Sanyo Denki

FAN 40X28MM 12VDC TACH

271
OD6015-05HSS

OD6015-05HSS

Orion Fans

FAN AXIAL 60X15MM 5VDC WIRE

0
624M

624M

ebm-papst Inc.

FAN AXIAL 60X25.4MM 24VDC WIRE

42
FAD1-04020BHLW11

FAD1-04020BHLW11

Qualtek Electronics Corp.

FAN AXIAL 40X20MM 5VDC WIRE

0
G9225H24B-FS-EM

G9225H24B-FS-EM

Mechatronics

FAN AXIAL 92X25MM 24VDC TERM

0
7118N

7118N

ebm-papst Inc.

FAN AXIAL 150X38MM 48VDC WIRE

7
OD4015-24HS01A

OD4015-24HS01A

Orion Fans

FAN AXIAL 40X15MM 24VDC WIRE

0
MSI1967H48B2-BBR

MSI1967H48B2-BBR

Mechatronics

FAN IMP MTRZD 190X67MM 48VDC

0
OD1238-48HHBXC5

OD1238-48HHBXC5

Orion Fans

FAN AXIAL 120X38.5MM 48VDC WIRE

0
AFB0612H-AF00

AFB0612H-AF00

Delta Electronics / Fans

FAN AXIAL 60X25.4MM 12VDC WIRE

494
19031377A

19031377A

Comair Rotron

FAN AXIAL 127X38.1MM 48V GL48B7

215
1608VL-05W-B49-B50

1608VL-05W-B49-B50

NMB Technologies Corp.

FAN AXIAL 40X20MM 24VDC WIRE

0
OD6020-24LS

OD6020-24LS

Orion Fans

FAN AXIAL 60X20MM 24VDC WIRE

0
9GV1524M501

9GV1524M501

Sanyo Denki

DC AXIAL FAN 150X150X50MM TACH

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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