Three Key Issues in Component Failure Analysis

Date：2024-01-19 17:23:39 Views：238

In the field of electronic engineering, component failure is a common occurrence. When components fail, it will have a serious impact on the performance and reliability of the entire electronic device. Therefore, conducting component failure analysis is very important. However, conducting effective failure analysis is not easy and requires consideration of many factors. This article will introduce three key issues to pay attention to when conducting component failure analysis, in order to help engineers better conduct failure analysis and improve the reliability and performance of electronic devices.

Identification of failure modes

Before conducting component failure analysis, it is necessary to first determine the failure mode. The failure modes of different components may vary, for example, electrolytic capacitors may leak or have a decrease in capacitance value, transistors may be short circuited or open circuited, resistance may change or open circuited, etc. Therefore, different failure analysis methods need to be adopted for different components. After determining the failure mode, the cause of failure can be further determined by observing the appearance of the components, testing the electrical parameters of the components, and other methods.

Analysis of Failure Causes

After determining the failure mode, further analysis of the cause of failure is needed. The reasons for failure may be diverse, for example, factors such as the design, manufacturing, and usage environment of components can all lead to component failure. When conducting failure cause analysis, it is necessary to combine the failure mode and the usage of the components, analyze the factors that may cause component failure, and eliminate them one by one.

Development of preventive measures

After determining the cause of the failure, measures need to be taken to prevent similar failures from happening again. Preventive measures may include replacing components, improving the usage environment, and improving component design. When taking preventive measures, it is necessary to comprehensively consider factors such as cost and feasibility, and develop appropriate preventive measures based on the actual situation.

Professional technology and personnel

The work of failure analysis has strong professionalism. From the perspective of the process of failure analysis, it can be mainly divided into stages such as failure confirmation, non-destructive testing, anatomical analysis, failure cause verification, and improvement measure verification. In addition to the need for professional analysis laboratories to conduct anatomical analysis, the other stages also put forward high requirements for the overall quality of failure analysis personnel. Strictly speaking, a dedicated failure analysis engineer should have rich design and development experience, familiar with failure physics, hardware reliability, failure analysis instruments and their use, and other knowledge and skills.

Good at summarizing and achieving point-to-point technical improvement

As for a single failure analysis, its role and significance are very limited. The reason why this work is important is that through failure analysis, it can provide ideas and clues for reliability work. Through the accumulation of several independent failure analyses, timely initiation of in-depth research on a certain type of device or technical topic can solve a problem at a certain level, thereby enhancing the role and significance of failure analysis work. Therefore, failure analysis personnel should have high technical sensitivity, be good at refining and summarizing, and continuously expand and deepen the breadth and depth of reliability work through daily failure analysis work.

In summary, conducting component failure analysis is very important as it can help engineers better understand the performance and reliability of components, and take corresponding measures to improve the reliability and performance of electronic equipment. When conducting component failure analysis, attention should be paid to the identification of failure modes, analysis of failure causes, and formulation of preventive measures to ensure the accuracy and effectiveness of the analysis results.