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DC Brushless Fans (BLDC)

Image Part Number Description / PDF Quantity Rfq
109R0805F4021

109R0805F4021

Sanyo Denki

FAN 80X25MM 5VDC RBLS

118
FDD1-17251EBLW39-56

FDD1-17251EBLW39-56

Qualtek Electronics Corp.

FAN AXIAL 172X51MM 48VDC WIRE

0
109P0824A201

109P0824A201

Sanyo Denki

FAN 80X32MM 24VDC TACH

0
BFB03505HHA-A

BFB03505HHA-A

Delta Electronics / Fans

FAN BLOWER 35X10MM 5VDC WIRE

903
4312S

4312S

ebm-papst Inc.

FAN AXIAL 119X32MM 12VDC WIRE

6025
9G0912G102

9G0912G102

Sanyo Denki

FAN 92X38MM 12VDC

32
OD6025-24MBIP68

OD6025-24MBIP68

Orion Fans

24VDC 60X60X25MM IP68

0
109R0624G401

109R0624G401

Sanyo Denki

FAN 60X25MM 24VDC TACH

276
AFB0924SH-TZUH

AFB0924SH-TZUH

Delta Electronics / Fans

FAN AXIAL 92X25.4MM 24VDC WIRE

0
OD6025-12HHSS

OD6025-12HHSS

Orion Fans

FAN AXIAL 60X25MM 12VDC WIRE

0
MR8032H24B1+6-FSR

MR8032H24B1+6-FSR

Mechatronics

FAN AXIAL 80X32MM 24VDC WIRE

0
DC0803812V2B-3T0

DC0803812V2B-3T0

Wakefield-Vette

FAN 12VDC 80X38MM 3WIRES

0
OD3510-12MSS

OD3510-12MSS

Orion Fans

FAN AXIAL 35X10MM 12VDC WIRE

0
DC0802512I2B-BT0

DC0802512I2B-BT0

Wakefield-Vette

FAN 12VDC 80X25MM 4WIRES

0
RV40-18/12H

RV40-18/12H

ebm-papst Inc.

MOTORIZED IMPELLER

417
BG0903-B047-00S-00

BG0903-B047-00S-00

NMB Technologies Corp.

FAN BLOWER 97X33MM 12VDC WIRE

485
BFB1624H-F00

BFB1624H-F00

Delta Electronics / Fans

FAN BLOWER 159X40MM 24VDC WIRE

394
DC0402012V2B-3T0

DC0402012V2B-3T0

Wakefield-Vette

FAN 12VDC 40X20MM 3WIRES

0
FAD1-12032CBMW12

FAD1-12032CBMW12

Qualtek Electronics Corp.

FAN AXIAL 120X32.3MM 12VDC WIRE

0
11938ME-24P-GA-00

11938ME-24P-GA-00

NMB Technologies Corp.

FAN AXIAL 119X38.4MM 24VDC WIRE

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

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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