Should I connect to the motherboard or power supply?

Connect to the motherboard header for speed control (best with 4-pin PWM) or PSU Molex for full speed (simple but noisy).

Why does the fan spin at 5V if the label says 12V?

The motor has a wide tolerance range (5V-13V) and may not start below approximately 7V.

Does having more blades mean better performance?

More blades increase static pressure but may be louder; fewer blades increase airflow with lower noise. A balance of 7-9 blades is typical.

How do I know if the fan is dying?

Listen for clicking or grinding noises, check RPM drops using monitoring software, or manually spin the blade to check for wobble or stiffness.

75X75X30mm Low Noise Ultra-Thin DC Blower Fan for Medical Device Air Circulation

Name: 75X75X30mm Low Noise Ultra-Thin DC Blower Fan for Medical Device Air Circulation
Brand: Fengxia Motor (Shanghai) Co., Ltd.
SKU: 2153477142

Shanghai, ChinaFengxia Motor (Shanghai) Co., Ltd.

US$2.10

500-4,999 Pieces

US$0.90

5,000+ Pieces

Sample price:US$4.00/piece.Request sample

Product profile

Customization

Available

Material

Plastic-Iron-Copper-Magnet

Blade Material

PBT 94ulv

Model NO.

7530

Type

DC Blower Fan

Electric Current Type

Mounting

Free Standing

Certification

RoHS, ISO, CE

Insulation Resistance

10mωor Over with at DC250V Megger

Ielectric Withstand Voltage

AC500V1s

Ambient Temperature

-10℃~+70℃(Operating) -40℃~+70℃(Storage)

Expected Life

+40° ,30000 Hours

Transport Package

Paper Box

Specification

Customized

Trademark

FUNSHARE

Origin

China

Production Capacity

100000 Pieces/Year

Key features

Ultra-Thin Low Noise Design: 75x75x30mm dimensions with optimized airflow for quiet operation in compact spaces.

Wide Voltage Tolerance: Operates reliably from 5V to 13V, ensuring compatibility with various power sources.

Multiple Bearing Options: Available with sleeve, hydraulic, or double-ball bearings for different lifespan needs.

Full Customization Service: ODM and OEM services available including customization from samples and designs.

High Durability & Long Life: Double-ball bearings offer 5-10 years lifespan suitable for 24/7 continuous operation.

Comprehensive Certifications: ISO9001, FCC, CE, and RoHS certified ensuring safety and quality standards.

Versatile Application Scenarios: Ideal for medical devices, UAVs, automotive, and consumer electronics cooling.

Fast Delivery & Quality Control: 100% inspection for finished products with one-month lead time for most orders.

Company profile

Importers and ExportersHigh Repeat Buyers Choice

Fengxia Motor (Shanghai) Co., Ltd.

Shanghai, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 5 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤4.13h

AI-Powered supplier vetting

SummaryThe supplier demonstrates strong customization, R&D, OEM/ODM, quality-control, and complaint-handling capabilities. It reports new products within the past year, provides customization from samples and designs through full customization, and serves known brands through OEM. Production includes two lines, inventory capability, defined inspection procedures, and four QA/QC inspectors. However, important operational limitations exist: no available SDK, no overseas agents, branches, warehouse, or showroom, no offline trade-show participation, and only one experienced export-trade employee. Manufacturing controls also show gaps, including no ongoing quantity reconciliation for each batch and no standard operating procedure for outsourced manufacturing. Financial evidence is represented only by years rather than substantive indicators, so credibility cannot be determined. The supplier holds an ISO9001:2015 certificate, but the available information does not establish broader certification coverage.

Supplier typeThe supplier operates as a manufacturer with two production lines, provides OEM and ODM services, offers inventory capability, and accepts FOB and EXW quotations. It also provides full customization, but lacks overseas agents, branches, warehouses, and showrooms.

CertificationsThe supplier reports an ISO9001:2015 certificate. No additional specific certifications are identified in the provided information.

After-Sales capabilityThe supplier has documented and followed procedures for customer complaints and corrective/preventive actions, supporting an established service-response process. However, it has no overseas agents, branches, warehouse, or showroom, which limits demonstrated overseas service infrastructure.

R&D capabilityThe supplier reports new products in the past year, provides ODM services, and assigns R&D personnel to product development, design drawings, production support, and specifications. Nevertheless, it has no available SDK and no design input, output, review, validation, or confirmation documents available for audit.

Production capacityProduction evidence includes two production lines, inventory capability, one-month average lead times in both peak and off-season periods, four QA/QC inspectors, written finished-product inspection instructions, and multiple listed production machines. Controls are weakened by the absence of ongoing batch quantity reconciliation and a standard operating procedure for outsourced manufacturing.

Customization capabilityThe supplier explicitly supports customization from samples, customization from designs, and full customization, with the same capability reported under both R&D and design services. This directly demonstrates broad customization coverage.