电子元器件可靠性试验方法及结果评估研究

Research on Reliability Testing Methods and Result Evaluation of Electronic Components

摘要

电子元器件的可靠性直接影响着整机系统的服役寿命和故障概率分布，传统试验方法在极端工况模拟以及失效机理溯源上存在很大局限性。本研究以HX-2024系列贴片电阻在新能源汽车电控系统中的应用为研究对象，建立了环境适应性、电气耐久性、失效模式分析为一体的多维试验体系，用多参数实时监测、威布尔分布模型拟合的方法完成了失效时间的准确预测、可靠性指标的量化评估，从试验结果可知，在温度循环达到临界值的时候，该批次样品就出现了明显的失效集中现象，为元器件选型优化和系统级可靠性预测提供数据支持。

Abstract

The reliability of electronic components directly affects the service life and failure probability distribution of the entire system. Traditional testing methods have significant limitations in simulating extreme working conditions and tracing failure mechanisms. This study takes the application of HX-2024 series surface mount resistors in the electronic control system of new energy vehicles as the research object. A multidimensional test system integrating environmental adaptability, electrical durability, and failure mode analysis was established. The accurate prediction of failure time and quantitative evaluation of reliability indicators were completed using multi parameter real-time monitoring and Weibull distribution model fitting methods. From the test results, it can be seen that when the temperature cycle reaches the critical value, a significant failure concentration phenomenon appeared in this batch of samples, providing data support for component selection optimization and system level reliability prediction.

关键词

电子元器件 / 可靠性试验 / 失效模式分析 / 威布尔分布 / 量化评估

Key words

electronic components / Reliability testing / Failure Mode Analysis / Weibull distribution / quantitative evaluation

参考文献

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