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Aluminum Electrolytic Capacitors
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Aluminum Electrolytic Capacitors: Reliable Solutions from alfatec

Aluminum electrolytic capacitors are indispensable components in modern electronics, known for their high capacitance and compact design. 

At alfatec, we offer a comprehensive range of high-quality electrolytic capacitors from leading manufacturers such as Chemi-Con and Samwha. 

Our products are distinguished by outstanding reliability, long service life, and excellent electrical characteristics to meet your specific requirements in demanding applications. 

Aufnahme eines Aluminium-Elektrolytkondensators zur zuverlässigen Energiespeicherung und Glättung in elektronischen Schaltungen.

Technical Characteristics

Variety of Designs: 

  • SMD (Surface Mount Device): For automated PCB assembly, ideal for space-saving applications. 
  • Radial-Lead: For through-hole mounting, suitable for applications with higher voltages and currents. 
  • Snap-In: For easy and secure PCB mounting, especially suitable for high-capacitance applications. 
  • Screw Terminal: For applications requiring maximum current handling and vibration resistance. 

Additional form factors are available to cover a wide range of applications. 

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Precise Technical Parameters: 

  • Rated Voltage: 250 V, 300 V, 350 V, 450 V, 500 V – suitable for various voltage ranges.  
  • Capacitance Range: 0.10 µF to 56,000 µF – for a broad spectrum of applications.  
  • Temperature Range: From -40 °C to +125 °C – for use in diverse environmental conditions.  
  • Voltage Withstand Capability: High dielectric strength for reliable operation.  
  • Conductivity: Low ESR (Equivalent Series Resistance) for high efficiency.  
  • Oxide Layer: The oxide layer on the aluminum anode acts as the dielectric and determines the capacitor’s capacitance and voltage rating.  
  • Dielectric: The dielectric, in this case the oxide layer, is an insulator that stores electrical charge.  
  • Cathode: The electrolyte, which impregnates the paper layers, forms the cathode of the capacitor.  
  • Polarized Capacitors: Aluminum electrolytic capacitors are polarized, meaning they have a positive and a negative terminal.

High-Quality Materials: 

  • Aluminum Anode: High-purity aluminum is used for the anode to ensure high conductivity and corrosion resistance.  
  • Electrolyte: A conductive liquid or gel that saturates the paper layers and serves as the cathode.  
  • Paper Layers: Specially treated paper acts as the carrier material for the electrolyte. 
Advantages and Special Features
High Capacitance: Achieve very high capacitance in a relatively small volume—especially important in space-constrained applications.
Cost Efficiency: Typically inexpensive to manufacture, making them a cost-effective choice for many applications.
Design Versatility: Available in various form factors (SMD, radial-lead, snap-in, screw terminal), enhancing adaptability to different mounting requirements.
Good Voltage Tolerance: Suitable for a wide voltage range, making them ideal for power supply applications.
Wide Temperature Range: Operate reliably across a broad temperature spectrum, ensuring durability in diverse environments.
Application Areas
Power Supplies and Switching Power Supplies: Used for DC smoothing, voltage buffering, and output voltage stabilization. Their high capacitance allows for rapid energy storage and release.
Frequency Converters and Motor Drives: Used for noise filtering and voltage stabilization, contributing to the efficiency and reliability of drive systems.
LED Lighting Systems: Used in LED drivers to smooth current and stabilize voltage, ensuring flicker-free and consistent lighting.
Automotive and Industrial Electronics: Used in various automotive systems such as engine control units, ABS, and infotainment. In industrial electronics, they are found in controllers, drives, and power supplies.
Renewable Energy and Energy Storage: Used in solar and wind systems to smooth voltage fluctuations and stabilize current. In energy storage systems, they buffer and stabilize voltage.
Uninterruptible Power Supplies (UPS): Maintain power during outages. Their high capacitance enables sufficient energy storage to protect critical systems from data loss and damage.

Our partner for aluminium electrolytic capacitors

Chemi-Con:  

  • Innovative technologies for top performance  
  • Comprehensive product range for diverse applications  
  • High reliability and long service life  

  • Especially suitable for applications requiring high stability  

     

Samwha:  

  • Broad range of electrolytic capacitors  
  • Excellent price-performance ratio  
  • High availability and fast delivery  

Chemi-Con


As the world's largest manufacturer of aluminium electrolytic capacitors, Chemi-Con has been driving development in this field since 1931. The core product portfolio is supplemented by other innovative components such as tantalum electrolytic capacitors, film capacitors, supercapacitors and many more, so that the manufacturer is characterised by a wide range of standard and special types of high quality, reliability and performance.

 

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Logo Chemi-Con

Samwha

The Samwha Capacitor Group is a leading global manufacturer of passive electronic components such as aluminum electrolytic and ceramic capacitors. Since 1956, Samwha has stood for quality, innovation, and energy efficiency. As a partner of alfatec, Samwha offers a wide range of products with high availability, reliable performance, and an excellent price-performance ratio—ideal for applications in industry, automotive, telecommunications, and more.

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See for yourself the quality and performance of our aluminum electrolytic capacitors. Request a non-binding quote today or download the data sheets.

alfatec – your partner for high-quality electronic components

As your expert partner for electronic components, alfatec supports you in selecting the right aluminum electrolytic capacitors for your applications. We offer comprehensive advice and are happy to answer any questions you may have about power modules.

Do you have questions about our aluminum electrolytic capacitor solutions or would you like a personal consultation? Feel free to contact us.