YMIN VHE Capacitors Help Ensure Stable Operation Of Thermal Management Systems In New Energy Vehicle

(MENAFN- Market Press Release) December 21, 2025 11:12 pm - YMIN VHE Series Polymer Hybrid Aluminum Electrolytic Capacitors: High Ripple Resistance, Low ESR, Ensuring Stable Operation of Thermal Management Systems in New Energy Vehicles

A common long-tail question: "How stable is the ESR value of your VHE capacitors across a wide temperature range of -55? to 135?? Will temperature changes affect the response speed of the control system?"

Question Type: Reliability/Failure-Related, Design Support

Q: The electric water pump is sluggish at low temperatures and prone to overload at high temperatures. Can VHE capacitors solve this problem?

A: Yes. VHE capacitors maintain a stable ESR of 9~11m? across the entire temperature range of -55? to 135?, with minimal fluctuation. They provide sufficient current at low temperatures and lower losses at high temperatures, ensuring the control accuracy and response speed of the electric water pump across the entire temperature range and preventing overload.

Question Type: Performance Comparison, Reliability/Failure-Related

Q: To reduce system heat generation, I want to choose low ESR capacitors, but I'm worried about performance degradation at high temperatures. How does VHE perform?

A: VHE is designed for high temperatures, with a typical ESR of 8-9m?, exhibiting excellent stability and minimal fluctuation across the entire temperature range. It maintains low loss at high temperatures, reducing its own heat generation and preventing performance degradation from affecting system reliability.

Question Type: Performance Comparison, Solution-Oriented

Q: Compared to ordinary automotive-grade capacitors, how much does VHE's low ESR improve system efficiency?

A: Compared to the VHU series (11~12m?) and a certain international brand's ZS series (?14m?), VHE's low ESR (8-9m?) significantly reduces I2R conduction losses, directly improving system efficiency and making it suitable for high ripple current thermal management scenarios.

Question Type: Design Support, Compatibility/Replacement

Q: What are the advantages of VHE's low ESR and compact size (e.g., 10*10.5mm) in space-constrained ECU designs? My ECU board has limited space; can VHE's low ESR allow me to use smaller capacitance capacitors, thereby reducing the overall size?

A: VHE achieves a balance between low ESR and small size; for example, a 35V 330?F capacitor measures only 10*10.5mm. Engineers can optimize PCB layout without sacrificing low loss and high ripple performance, providing a cost-effective solution for compact ECUs.

Question Type: Design Support, Lifecycle, Reliability/Failure

Q: Is the ESR performance of VHE capacitors stable over their 4000-hour lifespan?

A: Yes. VHE is designed to operate stably at 135? for 4000 hours. Its low ESR characteristics remain stable throughout its lifespan, ensuring long-term performance consistency and system reliability, superior to conventional products.

Long-tail Question: "How much ripple current can your VHE capacitors withstand? Will they fail prematurely due to excessive ripple current at 125??"

Question Type: Solution, Reliability/Failure

Q: When my cooling fan is controlled by PWM, the capacitor next to the driver chip gets extremely hot. Can VHE solve this?

A: Yes. The core advantage of the VHE series lies in its high ripple current carrying capacity, reaching 4600mA at 125?, more than 1.8 times that of the previous generation VHU series. This effectively reduces capacitor temperature rise and fundamentally solves the problem of failure caused by overheating.

Question Type: Technical Principle

Q: What are the key improvements in ripple current carrying capacity of the VHE compared to the VHU series?

A: The VHE is an upgraded version of the VHU: the ripple current at 135? has increased from 2000mA to 3500mA, and at 125? from 2800mA to 4600mA, enabling it to handle more demanding loads and significantly enhancing system reliability.

Question Type: Performance Comparison

Q: With the same 35V 330?F specifications, how much higher is the ripple current of the VHE compared to the international brand ZS series?

A: At 135?, the VHE ripple current is 3500mA, while the ZS series is 2500mA, a 40% higher VHE, resulting in longer lifespan and greater system stability under the same operating conditions.

Question Type: Solution-oriented, Reliability/Failure-oriented

Q: Besides making the capacitor itself more reliable, what other benefits does the high ripple current capability bring to the system?

A: 1. Actuator protection: Absorbs high ripple current from motor drives, ensuring the safe operation of electronic water pumps, oil pumps, etc.; 2. Interference suppression: Reduces the impact of voltage fluctuations on sensitive devices such as MCUs, ensuring system stability.

Question Type: Design Support-oriented

Q: How do I calculate the required ripple current capacitor for my application? Can Yung-Ming provide support?

A: Yes. The ripple current needs to be determined based on the specific application topology and operating conditions. For selection assistance, please contact us via the QR code. Our technical team will provide immediate selection guidance and technical support.

The core question: "Can the VHE capacitor still function properly at an extreme ambient temperature of 150?? What is its lifespan in hours?"

Question Type: Reliability/Failure-Related

Q: Can the VHE capacitor function properly at a harsh ambient temperature of 150??

A: Yes. The VHE has a rated operating temperature of 135? and supports extreme ambient temperatures up to 150?. It can easily handle the high temperatures in the engine compartment and still operate stably in this environment, demonstrating reliability far exceeding that of conventional products.

Question Type: Testing and Verification, Life Cycle-Related

Q: How is the VHE's "4000-hour lifespan at 135?" verified?

A: This indicator represents that the VHE can operate stably and continuously for 4000 hours at a high temperature of 135? and rated voltage. Rigorous lifespan testing has verified this, and it is the core guarantee of its automotive-grade reliability.

Question Type: Solution-Related, Reliability/Failure-Related

Q: My electronic fuel pump is installed near the engine, where the temperature is high and vibration is significant. Is the VHE suitable for use here?

A: Very suitable. VHE is specifically designed for high-temperature and high-vibration environments. Its 135? temperature resistance and long lifespan address the challenges of high temperatures, while its enhanced vibration-resistant structure adapts to installation requirements near the engine, making it an ideal choice for electronic oil pumps and water pumps.

Question Type: Life Cycle, Cost Analysis

Q: What is the expected lifespan of the VHE capacitor at 105??

A: VHE has a lifespan of 4000 hours at 135?. Based on the principle that capacitor lifespan increases with decreasing temperature, the lifespan at 105? will far exceed 4000 hours, providing an extremely high reliability margin.

Question Type: Regulatory Compliance, Case Study/Reputation

Q: Has the VHE series passed automotive-grade certifications such as AEC-Q200?

A: Yes. VHE is designed in strict accordance with automotive-grade standards and has passed AEC-Q200 certification, meeting the stringent requirements of automotive electronics for reliability, environmental adaptability, and long-term lifespan.

The core question: "In applications with frequent switching and current surges, how well do VHE capacitors withstand overload? Is there any measured data to support this?"

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