The 3900uF 350V screw terminal aluminum electrolytic capacitor is designed for high-power electronic systems that require large energy storage and high ripple current capability.

With its robust screw terminal structure, this capacitor provides reliable electrical connections and excellent performance in demanding environments such as industrial power supplies, solar inverters, motor drives, and UPS systems.

Manufactured with high-quality aluminum foil and advanced electrolyte technology, it ensures stable DC bus filtering, long service life, and superior reliability.

Key Features

• Large Capacitance: 3900uF for efficient energy storage

• Rated Voltage: 350V DC

• High Ripple Current Capability

• Low ESR for stable power performance

• Long service life up to 5000 hours at 105°C

• Screw Terminal Design for secure connections

• Suitable for high power industrial applications

Typical Applications

The 3900uF 350V electrolytic capacitor is widely used in high-power electronic equipment.

1 Industrial Power Supplies

Used in AC-DC power conversion systems to smooth rectified voltage and reduce ripple.

Typical equipment:

• Switching power supplies

• Industrial control power systems

• High-power DC power supplies

2 Variable Frequency Drives (VFD)

In motor drive systems, the capacitor acts as a DC link capacitor to stabilize the DC bus voltage.

Applications include:

• Industrial motors

• HVAC systems

• Automation equipment

3 Solar Inverters

Renewable energy systems require stable DC bus capacitors.

Used in:

• Solar power inverters

• Energy storage systems

• Grid-connected inverter equipment

Functions:

• Energy buffering

• Ripple filtering

• Voltage stabilization

4 UPS Systems

Uninterruptible power supplies rely on large electrolytic capacitors to ensure stable output.

Roles include:

• Power filtering

• DC bus energy storage

• Instant load response

5 Welding Equipment

High-capacity capacitors are used in welding power systems.

Examples:

• Resistance welding machines

• Arc welding equipment

• Pulse power systems

6 Audio Power Amplifiers

Professional audio systems often use large capacitors for power supply stability.

Applications:

• High-power amplifiers

• Stage audio equipment

• Professional sound systems

Technical Specifications

Why Choose XUANSN Capacitors

XUANSN is a professional manufacturer of aluminum electrolytic capacitors with more than 20 years of production experience.

Our advantages include:

• ISO9001 & IATF16949 certified factory

• Monthly production capacity 300 million capacitors

• 20-30% cost advantage compared with major brands

• Fast delivery within 10 days

• Custom capacitor solutions available

Our capacitors are widely used in industrial electronics, LED drivers, automotive electronics, renewable energy systems, and consumer electronics.

FAQ

1.What is a 3900µF 350V capacitor used for?

It is mainly used in high power electronic systems, such as inverters, UPS systems, motor drives, and industrial power supplies for DC bus filtering and energy storage.

2.Why are screw terminal capacitors used in high power circuits?

Screw terminal capacitors provide stronger electrical connections, higher ripple current capability, and better heat dissipation, making them suitable for high power applications.

3.What is the advantage of large capacitance capacitors?

Large capacitance capacitors help store more energy, reduce voltage ripple, and stabilize power supply output, especially in industrial power electronics.

Contact us

For more information about 3900uf 350v Electrolytic Capacitor , or to inquire about bulk purchasing and custom solutions, feel free to reach out to us. Our team is ready to assist you with your requirements.

We are a supplier of electrolytic capacitor, and we have rich experiences in this field. Our daily production capacity can reach  7 million electrolytic capacitors, the sample period is 3 days, and the production cycle is 10 days. We will give you great support in terms of price, quality and delivery time.

And Support Customer’s Visit To The Factory

E-mail：  sales1@xuanxcapacitors.com

Pho（whatsapp）：+ 86-18825879082

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website：www.xuanxcapacitors.com

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