What should I do if the fan is too loud?

Check for loose screws causing vibration, remove dust buildup that increases resistance, lower the RPM via BIOS or software, or consider the bearing type (hydraulic is quieter than double-ball).

How do I know if the fan is dying?

Listen for clicking or grinding sounds indicating bearing failure. Check RPM using software like HWMonitor; significantly lower RPM than spec signals issues. Also, check if blades spin freely without wobble.

Can I connect the fan to the power supply instead of the motherboard?

Yes, connecting to a PSU Molex connector runs the fan at 12V full speed, which is simple but noisier. Motherboard headers enable speed control, especially with 4-pin PWM fans.

30X30X3mm High Airflow Mini DC Blower Fan for Small Electronic Enclosures

Name: 30X30X3mm High Airflow Mini DC Blower Fan for Small Electronic Enclosures
Brand: Fengxia Motor (Shanghai) Co., Ltd.
SKU: 2157806732

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

US$5.00

500-4,999 Pieces

US$4.50

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.

FB3003

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

Wide Voltage Tolerance: Operates reliably within a 5V to 13V voltage range for versatile power compatibility.

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

Customization Available: Supports full customization from samples, designs, and specific customer requirements.

Multi-Scenario Application: Ideal for notebooks, projectors, UAVs, VR headsets, and various electronic enclosures.

Certified Quality: ISO9001 certified with FCC, CE, and RoHS standards ensuring safety and reliability.

Quiet Operation Options: Hydraulic and sleeve bearings provide ultra-quiet performance for sensitive environments.

Flexible Pin Configuration: Available in 3-pin for DC control and 4-pin for precise PWM auto speed control.

Professional Manufacturer: Established in 2016 with 4 R&D engineers and 100% finished product inspection.

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: ≤3.02h

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.

Product Q&A

Q:How long will the fan last?

Lifespan depends on the bearing type: Sleeve bearings last ~2-3 years, hydraulic bearings ~4-5 years, and double-ball bearings can last 5-10 years with 24/7 tolerance.

Q:What is the difference between 3-pin and 4-pin fans?

3-pin fans use DC voltage control for fixed or stepped speeds. 4-pin fans use PWM for auto speed control, offering quieter and more precise operation. A 4-pin fan on a 3-pin header runs at full speed.

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

The fan has a wide voltage tolerance, operating effectively between 5V and 13V. It might not start below approximately 7V, but it will spin at 5V.

Q:How can I make the fan quieter?

Use rubber pegs or grommets to reduce vibration, use an inline resistor or low-noise adapter to lower voltage, or adjust the BIOS fan curve to keep RPM low until temperatures rise.

Q:Which direction should the fan face?

Check the arrows on the frame: arrows pointing out indicate exhaust, and arrows pointing in indicate intake. Generally, front/side fans are for intake, and rear/top fans are for exhaust.