Should I connect the fan to the motherboard or power supply?

Connect to the motherboard header for speed control (best with 4-pin PWM) or to the PSU Molex for full-speed 12V operation. Keep total current per header under 1A if using splitters.

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

The motor has a wide tolerance and can run between 5V and 13V, though it might not start below approximately 7V.

Do more blades mean better performance?

More blades provide higher static pressure but are slightly louder, while fewer blades offer higher 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 sounds, check RPM using software like HWMonitor for significant drops, or manually flick the blade to check for wobble or stiffness.

30X30X4mm PWM Control Ultra-Thin DC Blower Fan for Automotive Electronics

Name: 30X30X4mm PWM Control Ultra-Thin DC Blower Fan for Automotive Electronics
Brand: Fengxia Motor (Shanghai) Co., Ltd.
SKU: 2151615662

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

US$2.80

500-4,999 Pieces

US$1.80

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.

3004

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

PWM Control Support: Features 4-pin PWM control for auto speed adjustment and precise operation.

Ultra-Thin Design: Compact 30x30x4mm profile ideal for space-constrained automotive and electronic devices.

High Durability: Double-ball bearings offer 5-10 years lifespan with 24/7 tolerance.

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

Full Customization: Offers full customization from samples, designs, and specific customer needs.

Multi-Industry Application: Suitable for automotive electronics, UAVs, VR headsets, and medical devices.

Certified Quality: ISO9001 certified with RoHS, CE, and FCC compliance for global markets.

Low Noise Operation: Designed for ultra-quiet performance with options for sleeve, hydraulic, and ball bearings.

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: ≤4.77h

AI-Powered supplier vetting

SummaryThe supplier provides extensive customization options and has a strong research and development capability, including ODM services and new product development. However, they lack overseas warehouse and showroom capabilities, and do not have overseas agents or participate in trade shows. Their financial data is up-to-date and they hold an ISO9001:2015 certification. Despite having quality assurance processes, the manufacturing capacity seems limited with only two production lines and no ongoing volume reconciliation or outsourcing SOPs.

CertificationsHolds an ISO9001:2015 certificate, indicating compliance with quality management standards.

After-Sales capabilityHas clear procedures and records for handling customer complaints and implementing corrective actions.

Financial creditFinancial data is current, with information available up to the last three years, demonstrating financial stability.

R&D capabilityStrong R&D capabilities with evidence of new product development, though lacking in audit documentation.

Production capacityLimited production capability with only two production lines, and lacks ongoing volume reconciliation and outsourcing SOPs.

Customization capabilityOffers full customization services from samples and designs, with a comprehensive design service capability.

Client casesProvides OEM services for well-known brands, suggesting a history of working with reputable companies.

Product Q&A

Q:What should I do if the fan is too loud?

Check mounting for loose screws causing vibration, remove dust buildup, lower RPM via BIOS or software, or consider bearing types like hydraulic for a balance of noise and longevity.

Q:Which direction should the fan face?

Look for arrows on the frame: arrows pointing out indicate exhaust, while arrows pointing in indicate intake. Generally, front/side is intake and rear/top is exhaust.

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

3-pin fans use DC voltage control with fixed or stepped speeds, while 4-pin fans use PWM for auto speed control, offering quieter and more precise operation.

Q:How long will the fan last?

Sleeve bearings last 2-3 years, hydraulic bearings last 4-5 years, and double-ball bearings can last 5-10 years with 24/7 tolerance.

Q:How can I make the fan quieter?

Use rubber pegs instead of screws to reduce vibration, use an inline resistor or low-noise adapter to lower voltage, or adjust the BIOS fan curve to keep RPM low.