CW6H

Excellent Performance, Empowering the Future: A Comprehensive Analysis of the YMIN CW6H Series Aluminum Electrolytic Capacitors

In today's rapidly developing power electronics industry, capacitor selection plays a decisive role in system performance and reliability. YMIN's CW6H series aluminum electrolytic capacitors, with their superior technical specifications and robust performance, are an ideal choice for high-end applications such as industrial power supplies, new energy, and automotive electronics. This article will delve into the technical features, practical applications, and revolutionary impact of these capacitors on modern power systems.

Product Overview and Technical Advantages

The CW6H series are high-performance capacitors designed for harsh operating environments. They cover an operating temperature range of -40°C to +105°C, a rated voltage range of 350V to 600V, and a capacitance range of 120-1000μF, fully meeting the comprehensive requirements of industrial applications for a wide temperature range, high voltage, and large capacitance.

Long-term durability and stability are the core strengths of the CW6H series. They boast an exceptionally long lifespan of 6000 hours at 105°C, far exceeding conventional industry standards. After rigorous durability testing, the CW6H capacitors demonstrated a capacity change of no more than ±20% of their initial value after 3000 hours of continuous operation at rated voltage and rated ripple current at 105°C. The loss value did not exceed 200% of the initial specification, and the leakage current remained within the initial specification. This means that even under long-term operation in extreme temperature conditions, the CW6H maintains stable electrical performance, significantly reducing the risk of system failure.

Excellent temperature characteristics ensure the capacitor's reliability in various environments. Under 120Hz testing conditions, the capacitance ratio at -25°C to +20°C is ≥0.8, and the capacitance ratio at -40°C to +20°C is ≥0.65. The corresponding impedance characteristics are: the impedance ratio at -25°C to +20°C is ≤5, and the impedance ratio at -40°C to +20°C is ≤8. This excellent low-temperature performance makes the CW6H particularly suitable for use in environments with large temperature fluctuations, such as outdoor power equipment and new energy vehicles.

Precision Design and Safety Performance

The CW6H series features a carefully designed physical structure and is available in a variety of sizes (ranging from 22mm to 40mm in diameter), allowing design engineers to flexibly select the most suitable model based on actual space constraints. This compact design is particularly suitable for space-constrained, high-density power supply equipment.

In terms of insulation performance, the insulation resistance between all capacitor terminals and the insulating sleeve and securing strap on the container cover is ≥100MΩ (DC500V test), and it can also withstand a dielectric strength test of AC2000V for one minute. This high-standard insulation design provides dual safety for equipment, especially in high-voltage applications, effectively preventing leakage and breakdown risks.

In terms of high-frequency performance, the CW6H series exhibits excellent frequency compensation characteristics. As the frequency increases from 50Hz to 10kHz, the correction factor increases from 0.8 to 1.4, which means that the capacitors provide even better performance in high-frequency applications. Furthermore, the temperature compensation coefficient gradually decreases from 2.7 to 1.0 as the temperature increases (from 40°C to 105°C). This intelligent temperature compensation feature ensures stable performance across various operating temperatures.

Actual Application Scenario Analysis

New Energy Photovoltaic Power Generation System

In photovoltaic inverter applications, the CW6H series serves as a critical DC link capacitor, smoothing the pulsating current generated by the inverter. Its high withstand voltage (up to 600V) and large capacitance (up to 1000μF) effectively stabilize system voltage and reduce power fluctuations. Its long lifespan at 105°C perfectly matches the year-round outdoor operation requirements of photovoltaic power generation systems, significantly reducing maintenance frequency and lifecycle costs.

New Energy Vehicle Power System

The automotive electronics industry places extremely stringent requirements on component reliability and environmental adaptability. The CW6H series' wide temperature range (-40°C to +105°C) makes it suitable for key components such as onboard chargers and motor drivers in new energy vehicles. This product complies with the RoHS Directive and meets automotive environmental standards. Its shock-resistant design and stable temperature characteristics withstand the vibrations of driving vehicles and the high temperatures of the engine compartment.

Industrial Power Supplies and Inverters

In industrial power supplies and inverters, the CW6H series' low ESR (equivalent series resistance) significantly reduces power loss and improves system efficiency. For example, the CW6H2V102MNNAS08S2 model achieves an ESR as low as 0.179Ω at 350V/1000μF, while offering a maximum ripple current of 2670mA. This low impedance makes the capacitors excellent for high-frequency switching power supplies, reducing heat generation and improving overall efficiency and power density.

Uninterruptible Power Supply (UPS) Systems

For UPS systems, the reliability of capacitors is directly related to the power supply security of critical loads. The CW6H series demonstrates outstanding high-temperature no-load performance: after 1000 hours of storage at 105°C, the capacitance change does not exceed ±15% of the initial value, and the loss does not exceed 150% of the initial specification. This stability ensures the UPS system can respond instantly even after extended downtime, providing uninterrupted power to critical equipment.

Product Selection and Technical Guidance

The CW6H series offers a wide range of models, allowing users to optimize the selection based on specific application requirements. For example, in space-constrained applications, small-diameter models such as the CW6H2V121MNNZS02S2 (22mm diameter, 25mm length) can be selected. For applications requiring higher capacity, larger-capacity models such as the CW6H2G102MNNAS10S2 (400V/1000μF) can be chosen.

Ripple current calculation is a key step in the selection process. The CW6H series provides detailed frequency and temperature compensation coefficients, allowing designers to calculate the appropriate ripple current value based on actual operating conditions. For example, at 85°C and 1kHz, the ripple current correction coefficient is the product of a temperature coefficient of 1.7 and a frequency coefficient of 1.25. This detailed guidance ensures accurate application design.

Regarding installation precautions, the design simplifies the installation process and provides reliable connection stability. It is recommended to use appropriate torque during installation, avoiding overtightening or undertightening, to ensure good electrical contact and mechanical fixation. Also, pay attention to capacitor polarity, as reverse voltage can damage or even explode the capacitor.

Quality Assurance and Testing Standards

YMIN implements strict quality control on the CW6H series, and each batch of products undergoes multiple reliability tests. In addition to conventional electrical parameter testing, accelerated life tests such as high-temperature load life testing, high-temperature no-load storage testing, and temperature cycling testing are also included to simulate the various stress conditions in actual use environments.

The product also places special emphasis on consistency and stability. High-purity aluminum foil and high-quality electrolytic paper, combined with an advanced electrolyte formula, ensure parameter consistency in mass production and long-term performance stability. This attention to detail has earned the CW6H series a strong reputation in high-end applications.

Conclusion

With its comprehensive technical advantages, reliable safety performance, and wide application adaptability, the YMIN CW6H series aluminum electrolytic capacitors have become an indispensable core component in modern power electronics systems. Whether in emerging fields like new energy and automotive electronics, or in traditional areas like industrial power supplies and power control, the CW6H series provides stable, efficient, and long-lasting capacitor solutions.

As power electronics technology advances toward higher efficiency, higher power density, and greater reliability, YMIN will continue to be committed to technological innovation and quality improvement, providing global customers with higher-quality capacitor products and comprehensive technical services, and jointly driving the development of the electronics industry.