YMIN LK Series Achieves Domestic Substitution Of ECU Capacitors For New Energy Vehicles

(MENAFN- Market Press Release) March 17, 2026 9:36 pm - A Path to Reliable Domestic Substitution of Energy Storage Capacitors for New Energy Vehicle Airbag ECUs – A Benchmark Analysis of Yongming LK Series and NCC LBG/LBV Series

When airbag ECU projects stagnate due to long lead times and high costs of NCC capacitors, and face stringent requirements for domestic production rates, how can the feasibility of domestically produced capacitors be scientifically assessed? This article focuses on Yongming's LK series energy storage capacitors, addressing key questions about whether domestic capacitors can support substitution and solve the project's actual pain points from two dimensions: technical parameters and commercial value. It emphasizes benchmarking and surpassing key indicators such as -40? ESR (Equivalent Series Resistance) and 105? lifespan, as well as the realization of comprehensive value in terms of cost, lead time, and supply chain security.

Technical Challenges: Extreme Performance Requirements of Energy Storage Capacitors in Airbag ECUs

The operating characteristics of airbag ECUs impose multi-dimensional extreme technical requirements on energy storage capacitors, primarily focusing on three aspects: low-temperature performance, high-temperature lifespan, and cycle durability.

Low-Temperature Challenge (-40?): In extremely low-temperature environments, the ECU has stringent requirements for instantaneous discharge current and voltage sustainment time. The capacitor's ESR (Electrostatic Dissipation Rate) increases sharply with low temperatures, directly leading to increased voltage drop, affecting energy conversion efficiency, and consequently threatening system stability and safety.

High-Temperature and Lifespan Challenge (105?): At the extreme temperature of 105?, electrolyte drying easily causes capacitor capacity decay, ultimately leading to device failure. Capacitor lifespan at this temperature is the ultimate test of the stability of its material system and manufacturing process.

Cyclical Stress: Airbag ECUs must withstand 100,000 charge-discharge cycles. The capacitor's electrode foil and electrolyte must possess high durability to ensure stable performance during frequent self-tests.

Solution Breakdown: Yungming LK Series Core Technologies and Design Solutions

The Yungming LK series energy storage capacitors are based on the NCC LBG/LBV series, building domestic substitution capabilities from multiple dimensions including design, certification, and material processes, precisely matching the performance requirements of airbag ECUs:

Benchmarking Design Philosophy: From the initial stages of project development, the NCC LBG/LBV series was used as a benchmark, achieving direct product replacement design while ensuring complete electrical performance compatibility.

Automotive-Grade Certification Cornerstone: The LK series has passed the AEC-Q200 automotive-grade passive device reliability standard certification, fully meeting the high reliability application requirements of the automotive OEM market, especially airbag systems.

Core Materials and Process Optimization

Utilizing a high-conductivity anhydrous electrolyte effectively reduces low-temperature ESR, improves high-temperature operating stability, and extends the overall lifespan of the capacitor.
Paired with high-density positive electrode foil, it enhances the capacitor's capacity per unit volume and charge retention capability, meeting the miniaturization design requirements of ECUs.
Employing a small-volume, high-density process, and through structural design optimization, it improves product reliability and adapts to the compact internal layout of ECUs.

Data Verification: Core Performance Comparison of Yongming LK Series and NCC LBV Series

Through laboratory testing, the core performance indicators of the Yongming LK series and NCC LBV series were verified side-by-side. The results are as follows:

-40? Low-Temperature ESR Comparison: Under the test conditions of -40?/120Hz, the ESR value of the Yongming LK series is 97.72m?, while that of the NCC LBV series is 106.93m?. The LK series' ESR value is reduced by approximately 9.2m?, significantly improving the energy conversion efficiency of the system's low-temperature discharge current and providing a higher safety margin for the airbag ECU.

105? High-Temperature Lifespan and Capacitance Decay: After 3000 hours of testing at 105?, the capacitance decay of the Yung-Ming LK series was -2.71%, and that of the NCC LBV series was -2.72%. The highly similar decay data demonstrates that the Yung-Ming LK series possesses long-term high-temperature operational stability comparable to industry benchmarks.

Replacement Implementation: Engineering and Commercial Considerations from Laboratory to Production Line

Successfully replacing the NCC LBG/LBV series with the Yung-Ming LK series requires balancing engineering design verification with commercial supply chain value, and ensuring comprehensive process control:

1. Design Verification of Core Checklist

Electrical Compatibility Confirmation: Focus on verifying key parameters such as operating voltage and ripple current to ensure the replacement solution is compatible with the ECU system and guarantees normal operation;

Layout and Soldering Compatibility: Even minor dimensional differences in capacitors can cause stress on the PCB board, requiring detailed board-level verification to mitigate application risks.

2. Supply Chain and Business Value Reassessment

Quantitative Value of Delivery Time: Compared to the long delivery time of NCC capacitors, Yongming's LK series achieves rapid delivery, significantly shortening the overall project cycle and effectively reducing project deadline pressure.

Cost-Benefit Analysis: A comprehensive assessment from BOM costs and inventory costs to supply disruption risks reveals that the Yongming LK series has significant advantages across all dimensions, achieving overall cost optimization.

Conclusion & Frequently Asked Questions

Leveraging its technological innovation and core material process advantages, the Yongming LK series has achieved benchmarking and surpassing the NCC LBG/LBV series in the core performance of energy storage capacitors. Simultaneously, it forms comprehensive competitiveness in terms of business value, delivery time assurance, and technical reliability, providing strong support for airbag ECU projects and successfully achieving the goal of domestic substitution of energy storage capacitors.

Q1: Can the Yongming LK series truly replace the NCC LBV/LBG solution in terms of performance? A1: Provided the target specifications are consistent and board-level verification is completed, the Yungming LK series can serve as a domestic alternative to NCC LBV/LBG solutions. This series is designed with direct benchmarking as its core principle. Real-world testing data shows that its -40? low-temperature ESR (97.72m?) is superior to benchmark products, and its 105? high-temperature lifetime and capacity decay rate (-2.71%) are on par with industry benchmarks. Furthermore, the entire series has passed AEC-Q200 automotive-grade passive device reliability standard certification, meeting the highest reliability requirements for automotive applications and possessing drop-in replacement potential. Further confirmation through real-world testing in specific application scenarios is recommended.

Q2: Besides performance, what additional value does switching to the Yungming LK series solution bring?

A2: Switching to Yongming LK series capacitors not only guarantees stable technical performance but also unlocks three strategic benefits:

Significantly Enhanced Supply Chain Resilience: Significantly shortens procurement lead times, improving overall supply chain responsiveness and resilience;
Effectively Improved Cost Competitiveness: While maintaining equivalent product quality, directly optimizes system BOM costs, freeing up greater profit margins and market pricing power;
Achieving Strategic Compliance: Meets the requirements for domestic production rates of core components, enhancing the company's self-control over its supply chain.

MENAFN19032026003520003262ID1110884893