VHU

Beyond Limits, Defining the Future: YMIN VHU Series 135°C Ultra-High Conductivity Polymer Hybrid Aluminum Electrolytic Capacitors

In the electronic component industry, reliability, durability, and high performance are the eternal pursuits. The rapid development of automotive electronics, industrial automation, and communications technology has placed increasingly stringent demands on the environmental adaptability of core passive components. YMIN Electronics, with its forward-thinking technical vision and deep manufacturing expertise, proudly launches the VHU Series Conductive Polymer Hybrid Aluminum Electrolytic Capacitors (SMD Type). This product represents not only a technological leap forward but also a reliable foundation for extreme operating conditions, redefining the industry standard for capacitor performance in high-temperature applications.

I. Core Advantage: Superior Performance in Extreme Environments

The success of the YMIN VHU series stems from its revolutionary conductive polymer hybrid technology. It cleverly combines the ultra-high conductivity of conductive polymer materials with the voltage advantages of traditional electrolyte systems, achieving breakthrough performance in multiple dimensions.

1. Long-lasting durability at extreme temperatures of 135°C: This is the most striking hallmark of the VHU series. While conventional capacitors face significant challenges at 105°C, the VHU series guarantees stable operation for 4,000 hours at this extreme ambient temperature. This directly demonstrates the exceptional thermal stability and oxidation resistance of its internal material system, which significantly suppresses electrolyte evaporation and aging reactions under high temperatures. For automotive electronic devices in high-temperature areas such as the engine compartment and near the transmission, or for high-density industrial power modules with limited heat dissipation, this feature exponentially improves system lifespan and reliability.

2. Consistently low ESR and high ripple current handling capability: High temperatures often result in performance degradation, but the VHU series, leveraging the inherent properties of conductive polymers, maintains extremely low equivalent series resistance (ESR) even at high temperatures. Low ESR offers two key benefits: first, minimal internal heat generation, reducing thermal stress on the capacitor in high-temperature environments, creating a virtuous cycle; and second, it provides extremely high permissible ripple current capability. This enables it to effortlessly handle the wildly fluctuating currents in high-frequency switching power supplies, providing extremely pure and stable voltage to core components such as CPUs, GPUs, and high-power IGBT drivers, significantly improving the conversion efficiency and stability of the entire power system.

3. Robust Mechanical and Process Reliability: The product boasts excellent vibration resistance, capable of withstanding the constant vibrations of vehicles and heavy machinery, ensuring internal structural stability and preventing performance failures caused by mechanical stress. Furthermore, its SMD package is fully compatible with lead-free, high-temperature reflow soldering processes, adapting to the requirements of modern fully automated assembly lines and ensuring large-scale, highly consistent manufacturing.

II. Cornerstone of Quality: Authoritative Certification and Rigorous Testing

YMIN's commitment to quality is reflected in its compliance with and exceeding every international standard. The VHU series fully complies with the AEC-Q200 automotive electronic component reliability standard, meaning it has successfully passed a series of rigorous tests far exceeding industrial-grade requirements, including high-temperature loads, temperature cycling, high-temperature and high-humidity testing, and corrosion resistance. Its quality fully supports the ultimate pursuit of safety and zero defects in automotive electronics. Furthermore, the product actively complies with the RoHS directive and fully utilizes environmentally friendly materials, aligning with the global concept of sustainable green manufacturing.

YMIN has established an in-house verification system that far exceeds industry standards to ensure that every VHU capacitor stands the test of time:
• 135°C High-Temperature Load Durability: After 4000 hours of continuous testing at 135°C with rated voltage and ripple current applied, changes in parameters such as capacitance change, ESR increase, loss factor, and leakage current were kept within extremely small limits, with minimal performance degradation.

• 135°C High-Temperature Storage: After 1000 hours of unpowered storage at 135°C, simulating the material aging process in long-term high-temperature environments, product performance remained stable after testing.

• 85°C/85%RH High-Temperature and High-Humidity Load Endurance: After 1000 hours of power-on testing at 85°C and 85% relative humidity, the product demonstrates excellent moisture penetration and corrosion resistance, making it suitable for use in humid environments.

These tests together form the VHU series' unbreakable quality barrier.

III. Wide Applications: Enabling High-End Innovation

Due to its ultra-high temperature, high reliability, and high performance, the YMIN VHU series is an ideal choice for the following high-end applications:

• Automotive electronics (especially new energy vehicles and intelligent driving): This is the core market for the VHU series.

◦ New energy vehicle three-electric system: In the onboard charger (OBC), motor drive inverter, battery management system (BMS), and DC-DC converter, VHU capacitors are used for high-frequency filtering and energy buffering. Their 135°C temperature resistance allows them to be installed directly near heat sources, simplifying heat dissipation design.

◦ Intelligent driving system: They provide stable power to the control units of the autonomous driving domain controller (ADCU), millimeter-wave radar, and lidar. Their high reliability is a key guarantee for driving safety.

◦ Traditional engine management: They are used in equipment located in high-temperature compartments, such as the engine ECU and transmission TCU.

• Industrial automation and drives: In industrial inverters, servo drives, robot controllers, and high-power UPS power supplies, the internal temperatures are extremely high. The VHU's low ESR characteristics effectively reduce module temperature rise and improve energy efficiency. Its long lifespan significantly reduces equipment failure rates and maintenance costs.

• Communications and Data Center Infrastructure: 5G base station AAU/BBU power supplies, core routers, and data center server power supplies require 24/7 uninterrupted operation, placing extremely high demands on component lifespan and reliability. The VHU series effectively ensures the long-term stable operation of network infrastructure.

• High-end Consumer Electronics and Computing Hardware: Devices such as high-performance graphics cards, server motherboard VRM power supplies, and supercomputer power modules consume significant power and present significant heat dissipation challenges. VHU capacitors can deliver high instantaneous current, ensuring absolute stability during chip overclocking and full load operation.

IV. Product Series and Design Support

The YMIN VHU series offers a broad product portfolio, covering voltages from 25V to 80V, capacitances from 33μF to 1800μF, and a variety of sizes (diameters from 6.3mm to 18mm), providing engineers with a wide range of options to meet design requirements for varying power levels and space layouts. The company also provides a detailed table of ripple current frequency correction factors, enabling engineers to accurately calculate temperature rise at different operating frequencies, enabling precise thermal design and system optimization.

Conclusion

The YMIN VHU series 135°C conductive polymer hybrid aluminum electrolytic capacitor (SMD type) is more than just a component; it is a strategic solution to address the high-temperature, high-density, and high-reliability challenges of future electronic devices. It represents a major advancement in capacitor technology, successfully addressing the core pain points of high-end applications with its comprehensive performance of ultra-high temperature tolerance, ultra-long life, ultra-low ESR, and high reliability.

Choosing the YMIN VHU means choosing reliability and excellence. It embodies YMIN's relentless pursuit of technological innovation and unwavering commitment to quality. Whether powering the future of new energy vehicles or driving the intelligent transformation of Industry 4.0, the YMIN VHU series will be the most trusted "energy core" and "stability anchor" in the hands of engineers, working with customers to create a more efficient and reliable technological future.