CW3H

YMIN CW3H Series Aluminum Electrolytic Capacitors: A Perfect Balance of Cost-Effectiveness and Reliable Performance

As power electronics devices continue to strive for higher efficiency and better cost control, component selection has become a critical issue for design engineers. YMIN's CW3H series aluminum electrolytic capacitors, with their balanced performance and excellent price-performance ratio, provide an ideal solution for industrial applications. This article will comprehensively analyze the product's technical characteristics, application scenarios, and unique market value.

Product Positioning and Technical Features

The CW3H series is YMIN's aluminum electrolytic capacitor product targeted at mid- to high-end industrial applications. With an operating temperature range of -40°C to +105°C, rated voltages of 350V to 600V, and a capacitance range of 120-1000μF, it perfectly meets the requirements of most industrial power supply equipment.

Robust endurance is the core advantage of the CW3H series. The product has a guaranteed 3000-hour operating life at 105°C. This has been verified through rigorous durability testing: after 3000 hours of continuous application of the rated voltage and rated ripple current at 105°C, the capacitance change rate does not exceed ±20% of the initial value, the loss value does not exceed 200% of the initial specification value, and the leakage current remains within the initial specification value. These performance indicators ensure long-term stable operation in typical industrial environments.

The CW3H's excellent temperature adaptability enables it to withstand complex operating 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. Regarding impedance characteristics, the impedance ratio at -25°C to +20°C is ≤5, and the impedance ratio at -40°C to +20°C is ≤8. These characteristics ensure consistent performance of the capacitor despite temperature fluctuations.

Precision Design and Safety Assurance

The CW3H series features a standard design with various diameter options, ranging from 22mm to 40mm, to meet diverse space requirements. Its structural design fully considers installation convenience and connection reliability for industrial applications.

Insulation performance meets industrial standards, with an insulation resistance of ≥100MΩ (DC500V) between all terminals and the insulation sleeve, and can withstand a dielectric strength test of AC2000V for one minute. This design provides reliable equipment safety, especially in humid or dusty industrial environments.

In terms of frequency characteristics, the CW3H exhibits excellent adaptability. As the frequency increases from 50Hz to 10kHz, the correction coefficient increases from 0.8 to 1.4, ensuring stable performance even in high-frequency applications. The temperature compensation coefficient decreases from 2.7 to 1.0 as the temperature increases (40°C to 105°C). This intelligent compensation mechanism ensures consistent performance under different operating conditions.

Practical Application Value Analysis

Industrial Power Supply Equipment

In industrial switching power supplies and UPS systems, the CW3H performs critical filtering and energy buffering functions. Its 3000-hour lifespan fully meets the 5-8 year lifespan requirements of industrial equipment. For example, the CW3H2V102MNNAS08S2 model exhibits an ESR of only 0.163Ω at 350V/1000μF, while its ripple current reaches 2810mA. This low impedance significantly improves the power system's conversion efficiency.

Photovoltaic Power Generation Systems

In string-type photovoltaic inverters, the CW3H series, with its excellent temperature characteristics and reasonable cost control, is an ideal choice for DC link capacitors. This product complies with the RoHS directive, meeting the photovoltaic industry's stringent green manufacturing requirements. Its wide temperature range is particularly suitable for outdoor photovoltaic power generation equipment, enabling it to withstand the challenges of fluctuating day and night temperatures.

Industrial Automation Equipment

The CW3H's balanced performance is fully utilized in industrial automation equipment such as inverters and servo drives. Taking the CW3H2G102MNNAG01S2 as an example, the 400V/1000μF model offers a rated ripple current of 2940mA and an ESR of 0.18Ω. This balanced parameter balance ensures device stability under continuous operation.

Cost-Effectiveness

Compared to the higher-end CW6H series, the CW3H achieves significant cost advantages through optimized design and manufacturing processes while maintaining basic performance. For applications that do not require extreme longevity, the CW3H provides a more cost-effective solution.

Technical Selection Guide

The CW3H series offers a comprehensive range of models, allowing users to flexibly select based on specific application requirements. For space-constrained applications, choose a smaller model such as the CW3H2V121MNNXS01S2 (30mm diameter, 20mm length). For applications requiring higher capacitance, choose a larger model such as the CW3H2G102MNNAG01S2 (400V/1000μF).

Regarding installation precautions, the design ensures reliable connections. It is recommended to use a standard torque tool during installation to ensure proper tightening force. Also, pay attention to the polarity markings on the capacitors to avoid reverse installation and potential equipment failure.

Ripple current calculations should be based on actual operating conditions, referring to the frequency and temperature compensation coefficients provided by the product. For example, at 85°C and 1kHz, the correction coefficient is the product of a temperature coefficient of 1.7 and a frequency coefficient of 1.25. This precise calculation ensures reliable application design.

Quality Assurance and Testing Standards

YMIN implements strict quality control on the CW3H series. Each batch of products undergoes multiple reliability tests, including high-temperature load life testing, temperature cycling testing, and withstand voltage testing. High-quality aluminum foil and a specially formulated electrolyte are used to ensure consistent and stable production throughout batches.

Market Positioning and Competitive Advantages

The CW3H series strikes an excellent balance between performance and cost, meeting the technical requirements of most industrial applications while offering a competitive price. This product positioning gives it a significant advantage in medium-demand industrial power supplies, new energy, industrial automation, and other fields.

Compared to similar products, the CW3H excels in the following areas:
1. Parameter Balance: Optimally balances key parameters such as lifespan, ESR, and ripple current.
2. Temperature Adaptability: A wide temperature range meets the needs of most industrial environments.
3. Specification Completeness: Provides full voltage range coverage from 350V to 600V.
4. Cost-Effectiveness: Excellent price-performance ratio achieved through design optimization.

Conclusion

The YMIN CW3H series aluminum electrolytic capacitors, with their balanced performance, reliable quality, and excellent price-performance ratio, are an ideal choice for industrial power electronics equipment. In today's demand for equipment reliability and cost control, the CW3H series offers another excellent option for design engineers.

As industrial equipment demands for energy efficiency and reliability continue to increase, YMIN will continue to be committed to product technology innovation and quality improvement, providing global industrial customers with superior capacitor solutions and jointly promoting the advancement of industrial electronics technology.