VKO

VKO Series Aluminum Electrolytic Capacitors: Reliable Energy Solutions for High-Performance Electronic Devices

Product Overview

The VKO series aluminum electrolytic capacitors are high-performance electronic components meticulously crafted by YMIN, designed specifically for the demanding applications of modern electronic devices. As outstanding representatives of surface-mount aluminum electrolytic capacitors, the VKO series maintains an ultra-long lifespan of 6000-8000 hours even at 105℃. Its miniaturization, high frequency, and high ripple current characteristics make it an ideal choice for high-density fully automated mounting applications.

This series not only meets RoHS environmental directive requirements but also passes rigorous testing in high-temperature reflow soldering processes, demonstrating excellent heat resistance and stability. Whether in new energy vehicle electronics, high-speed data center servers, or smart home devices, the VKO series provides stable and reliable energy buffering and filtering functions for various electronic systems.

Core Technical Features

Excellent Temperature Adaptability

The VKO series aluminum electrolytic capacitors have a wide operating temperature range, covering extreme operating environments from -55℃ to +105℃, depending on the voltage specification. This excellent temperature adaptability enables it to maintain stable performance under various harsh conditions, making it particularly suitable for applications with stringent temperature requirements, such as automotive electronics and industrial control.

For products with a rated voltage ≤100V DC, the operating temperature range is -55℃ to +105℃; while high-voltage products of 160~500V DC support operating environments of -40℃ to +105℃. This design ensures that the capacitors perform optimally at different voltage levels.

High-Precision Capacitor Characteristics

The VKO series offers a wide voltage range selection from 10V to 500V, with capacitance values ​​ranging from 0.47μF to 8200μF, meeting the voltage and capacitance requirements of various circuits. The products employ a standard capacitance tolerance of ±20% (measured at 25±2℃, 120Hz), ensuring performance while optimizing production costs.

Regarding leakage current control, 10~100WV products ≤0.01CV or 3μA (whichever is greater),

160~500WV products ≤0.02CV+10(μA). This stringent leakage current control ensures the circuit's energy efficiency and lifespan.

Optimized Loss Characteristics

The VKO series exhibits excellent performance in loss tangent (tgδ). As the rated voltage increases, the tgδ value shows a reasonable increasing trend. For example, the 10V product has a tgδ of 0.28, while the 500V product has 0.25. This optimized design effectively reduces energy loss and improves overall efficiency.

For products with a capacity greater than 1000μF, tgδ increases by only 0.02 for every 1000μF increase in capacity. This characteristic makes performance more stable and reliable in high-capacity applications.

Product Structure Design and Process Innovation

Precision Dimensional Design

The VKO series offers a variety of sizes, from 5mm to 18mm in diameter and 10mm to 21mm in length, to meet the needs of different space layouts. Precise dimensional control ensures high efficiency and consistency in the automated placement process.

The product employs an innovative structural design, including optimized anode foil etching process and electrolytic paper configuration, achieving high capacity characteristics in a miniaturized size. Simultaneously, a special explosion-proof valve design ensures the product's safety performance under abnormal conditions, providing multiple layers of protection for end devices.

Advanced Material Technology

The VKO series uses high-purity aluminum foil as the electrode material, combined with a specially formulated electrolyte, achieving low equivalent series resistance (ESR) and high ripple current withstand capability. Additives in the electrolyte effectively inhibit the hydrolysis of the oxide film, extending the product's lifespan in high-humidity environments.

The terminal structure features a heat-resistant design, capable of withstanding 260℃ and 10-second reflow soldering conditions, meeting the requirements of modern electronic manufacturing processes.

Detailed Application Areas

Automotive Electronic Systems

In both new energy vehicles and traditional automotive electronic systems, the VKO series provides stable power filtering for key components such as ECUs (Electronic Control Units), ADAS (Advanced Driver Assistance Systems), and in-vehicle infotainment systems. Its high-temperature resistance ensures reliable operation in high-temperature environments such as engine compartments, and AEC-Q200 certification is strong evidence of its automotive-grade quality.

Data Centers and Servers

Facing the high computing density and high power density requirements of AI data center servers, the VKO series, with its high ripple current capability and long lifespan, provides efficient energy buffering for key equipment such as server power supplies and GPU accelerator cards. In high-frequency switching power supply applications, the product exhibits low impedance characteristics, effectively suppressing voltage fluctuations and ensuring high reliability in data processing.

Industrial Automation and Robotics

In industrial robots, motor drives, and automation equipment, the VKO series provides reliable energy support for key components such as servo drives and frequency converters. Its shock resistance and temperature stability ensure long-term stable operation in harsh industrial environments, reducing equipment maintenance requirements.

New Energy and Power Electronics

In new energy fields such as solar inverters and wind power converters, the VKO series plays a crucial role in DC-Link filtering and buffering. Its high-voltage product series (up to 500V) directly meets the voltage requirements of photovoltaic systems, simplifying circuit design and improving system efficiency.

Consumer Electronics and Fast Charging Devices

With the widespread adoption of GaN fast charging technology, the VKO series, with its high-frequency characteristics and small size, has become an ideal choice for PD chargers and smart home devices. The product provides a large-capacity buffer within a limited space, ensuring voltage stability and device safety during fast charging.

Reliability Testing and Quality Assurance

Rigorous Durability Testing

The VKO series undergoes rigorous durability testing. Under rated voltage and rated ripple current at 105℃, after a standard test period, the capacitance change remains within ±20% of the initial value, the loss tangent does not exceed 200% of the specified value, and the leakage current does not exceed the specified value. These test data fully demonstrate the product's stability during long-term use.

High-Temperature Storage Performance

After being stored at 105℃ under no-load conditions for 1000 hours, the product still maintains excellent electrical performance: capacitance change is within ±20% of the initial value, the loss tangent does not exceed 200% of the specified value, and leakage current does not exceed 200% of the specified value. This characteristic ensures product quality stability during storage and transportation.

Comprehensive Quality Certification

The VKO series not only complies with RoHS directive requirements, but most models have also passed AEC-Q200 automotive-grade certification, meeting the stringent reliability requirements of automotive electronics. The production line uses fully automated testing equipment to perform multiple parameter tests on each product, ensuring consistent product quality.

Technical Advantages Summary

The success of the VKO series aluminum electrolytic capacitors stems from the comprehensive application of several technological innovations: First, the use of high-purity materials and optimized processes achieves high performance while miniaturizing the product; second, a special electrolyte formula ensures stability over a wide temperature range; third, a precision structural design results in low ESR and high ripple current capability; and finally, a rigorous quality control process guarantees product consistency and reliability.

These technological advantages enable the VKO series to excel not only in traditional applications but also in emerging high-tech fields, demonstrating strong competitiveness. With the rapid development of technologies such as 5G, IoT, and AI, the VKO series will continue to provide crucial support for the miniaturization, efficiency, and reliability of electronic devices.

Future Development Trends

Faced with the trend of electronic devices moving towards higher frequencies, smaller sizes, and higher densities, the VKO series aluminum electrolytic capacitors will continue to innovate and optimize their technology. In the future, the products will further increase the upper limit of operating temperature, extend service life, reduce size, and improve electrical performance to meet the higher requirements of next-generation electronic devices.

Meanwhile, with increasing environmental awareness and a deeper understanding of sustainable development, the VKO series will place greater emphasis on the recyclability of materials and the environmental friendliness of the production process, committed to providing customers with product solutions that balance high performance and environmental friendliness.

In conclusion, the VKO series aluminum electrolytic capacitors, with their superior performance, reliable quality, and wide application adaptability, have become indispensable key components in modern electronic devices, providing a solid foundation for the electronic and intelligent development of various industries.