VK7

VK7 Series Aluminum Electrolytic Capacitors: 7mm Ultra-Thin Design Leads to High-End Power Supply Innovation

A Technological Masterpiece Breaking Space Limitations

In today's world of increasingly lightweight and compact electronic devices, the VK7 series aluminum electrolytic capacitors, with their ultra-thin 7mm design, represent a revolutionary breakthrough in high-end power supply solutions. This SMD-type aluminum electrolytic capacitor, specifically designed for high-density installations, maintains a stable operating life of 4000-6000 hours even at 105℃, perfectly embodying the design philosophy of "small size, big impact."

As a high-reliability component compliant with AEC-Q200 standards and RoHS directives, the VK7 series not only meets the stringent environmental requirements of modern electronic manufacturing but also demonstrates excellent process adaptability and reliability through high-temperature reflow soldering. From smart mobile devices to high-end server power supplies, from new energy vehicle electronics to industrial automation equipment, the VK7 series is injecting new vitality into power supply design across various fields with its unique ultra-thin advantage.

Core Technical Specifications Analysis

Superior Temperature Adaptability

The VK7 series exhibits a wide operating temperature adaptability, supporting operating environments from -55℃ to +105℃, depending on the voltage specification. For products ≤100V, the operating temperature range is -55℃ to +105℃; while high-voltage products from 160 to 400V support operating conditions from -40℃ to +105℃. This wide temperature range design ensures product reliability in various harsh environments.

Refined Electrical Parameter Configuration

This series offers a wide voltage range selection from 6.3 to 400V, with capacitance values ​​covering a wide range of needs from a few microfarads to hundreds of microfarads. The products employ a standard capacitance tolerance of +20% (at 25±2℃ and 120Hz), achieving an optimal balance between accuracy and cost.

Regarding leakage current control, products from 6.3~100WV have a leakage current of ≤0.01CV or 3μA (whichever is greater), while products from 160~400WV have a leakage current of ≤0.02CV+10(μA). This stringent leakage current standard ensures high-efficiency operation of the power supply system.

Optimized Loss Characteristics

The VK7 series exhibits excellent performance in loss tangent (tgδ), with the tgδ value showing a reasonable trend as the voltage level increases. From 0.32 for 6.3V products to 0.15 for 400V products, this optimized design effectively reduces energy loss and improves overall system efficiency.

Engineering Breakthrough in Ultra-Thin Design

Precision Structural Innovation

The VK7 series offers four diameter specifications: 5mm, 6.3mm, 8mm, and 10mm, but the height is precisely controlled to around 8mm, with the thinnest model measuring only 7.7mm in height. This ultra-thin design benefits from several structural innovations: high-density electrode foil design, optimized electrolytic paper thickness configuration, and innovative terminal structure layout, achieving maximum capacitance density within a limited space.

The special internal structural design ensures the product's mechanical strength despite its ultra-thin size, and its shock resistance meets industrial application requirements. Simultaneously, a carefully designed explosion-proof valve can promptly release internal pressure in abnormal situations, providing safety for the entire power system.

Advanced Materials and Processes

The VK7 series uses high-purity aluminum as the electrode base, increasing the effective surface area through a special etching process. Combined with a specially developed high-conductivity electrolyte, it achieves low ESR and high ripple current handling capabilities. Special additives in the electrolyte formula effectively suppress evaporation rates at high temperatures, ensuring product stability during long-term use.

The terminals utilize composite metal materials, ensuring both good solderability and excellent conductivity. A special surface treatment process ensures reliable connection between the terminals and PCB pads, adapting to the requirements of high-speed surface mount production.

Wide Range of Applications

Ultra-thin Consumer Electronics Power Supplies

In mobile devices such as smartphones, tablets, and ultrabooks, the VK7 series' 7mm ultra-thin design provides unprecedented flexibility in power supply design. Its superior performance in high-frequency switching power supplies ensures a stable and reliable power supply within limited space, providing crucial support for the trend towards thinner and lighter consumer electronics.

High-end Servers and Data Centers

Facing the high power density requirements of applications such as cloud computing and artificial intelligence, the VK7 series, with its high ripple current capability and compact size, provides an ideal solution for the miniaturization of server power modules. The product's stability in high-temperature environments ensures the reliability of data center operations and reduces maintenance costs.

New Energy Vehicle Electronics

In systems such as OBCs (On-Board Chargers) and DC-DC converters in electric vehicles, the VK7 series' AEC-Q200 certification ensures its reliability in the automotive electronics field. Its ultra-thin design is particularly suitable for installation in space-constrained ECUs (Electronic Control Units), providing stable filtering and energy storage functions for the electrical systems of new energy vehicles.

Industrial Automation Equipment

In industrial robots, servo drives, and other automated equipment, the VK7 series demonstrates superior environmental adaptability. Its shock resistance and temperature stability ensure long-term reliable operation in harsh industrial environments, providing reliable power supply for intelligent manufacturing equipment.

High-End Power Adapters

In GaN fast charging and PD protocol power adapters, the VK7 series fully leverages its high-frequency characteristics and compact size. The product provides effective voltage smoothing and energy storage within a limited space, ensuring power stability and equipment safety during fast charging.

Reliability Verification and Quality Assurance

Rigorous Durability Testing

The VK7 series undergoes comprehensive durability verification. Under rated voltage and ripple current applied at 105℃, after a standard test period, the capacitance change rate remains within 30% of the initial value, the loss tangent does not exceed 300% of the specified value, and leakage current is strictly controlled within the specified range.

Depending on the product diameter, the load life ranges from 4000 to 6000 hours: 4000 hours for Φ5 products, 5000 hours for Φ6.3 products, and 6000 hours for Φ8 and Φ10 products. This tiered lifespan design ensures that products of different specifications can meet the reliability requirements of their target application scenarios.

High-Temperature Storage Performance

After being stored at 105℃ under no-load conditions for 1000 hours, the product still maintains excellent electrical characteristics: the capacitance change rate is within 30% of the initial value, the loss tangent does not exceed 300% of the specified value, and the leakage current does not exceed the specified value. This characteristic ensures the product's quality stability during warehousing and transportation.

Comprehensive Quality Certification System

The VK7 series not only complies with the environmental requirements of the RoHS directive, but most models have also passed AEC-Q200 automotive-grade certification, meeting the stringent reliability standards of automotive electronics. The production line uses automated testing equipment to perform multiple parameter tests on each product, ensuring the consistency and reliability of the products leaving the factory.

Technological Advantages and Innovative Value

The success of the VK7 series stems from the organic integration of multiple technological innovations: First, its ultra-thin design breaks the space limitations of traditional aluminum electrolytic capacitors; second, advanced material processing achieves high performance on the basis of miniaturization; third, rigorous quality control ensures high product reliability; and finally, its wide application adaptability makes it the preferred solution for power supply designs across various fields.

These technological advantages enable the VK7 series to excel in traditional applications and demonstrate strong competitiveness in emerging high-tech fields. With the rapid development of technologies such as 5G communication, the Internet of Things, and artificial intelligence, the VK7 series will continue to provide key support for the miniaturization and efficiency of electronic devices.

Future Development Trends and Outlook

Faced with the continuous trend of electronic devices towards ultra-thinness and high density, the VK7 series aluminum electrolytic capacitors will continue to undergo technological innovation and product optimization. In the future, the product will further increase its upper operating temperature limit, extend its service life, and continue to improve electrical performance parameters while maintaining its ultra-thin characteristics to meet the higher requirements of next-generation electronic devices.

Meanwhile, with the deepening of the concept of sustainable development, the VK7 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, and contributing to the construction of a green electronics industry chain.

The VK7 series aluminum electrolytic capacitors, with their superior ultra-thin characteristics, reliable quality assurance, and wide application adaptability, have become indispensable key components in modern high-end power supply design. Whether driving the evolution of thinner and lighter consumer electronics, supporting the innovative development of new energy vehicle electronics, or supporting the intelligent transformation of Industry 4.0, the VK7 series will continue to leverage its unique technological value, providing a solid foundation for the electronic and intelligent development of various industries.