Several key problems needing attention in failure analysis of electronic components

Date：2023-02-06 18:23:34Views：399

The failure analysis of electronic components is to confirm the failure phenomenon of electronic components, distinguish the failure mode and failure mechanism, and finally confirm the failure reason with the help of various test and analysis technologies and analysis procedures. Put forward suggestions to improve the design and manufacturing process, prevent the recurrence of failures and improve the reliability of components. Therefore, to carry out failure analysis, it is necessary to establish a collection system of failure information and failure devices at the stages of development, production and engineering.

Failure early warning and startup analysis mechanism

Although failure analysis is important, it is not necessary and impossible to thoroughly analyze any failure. In the product life cycle, device failure has obvious phased characteristics, and the reasons for failure at different stages are also different. Therefore, a reasonable early warning mechanism and start-up analysis mechanism are very necessary. In actual operation, it should be handled flexibly according to the specific situation and decide whether to start the failure analysis according to the need.

The number of failures in the development stage is small, but the relative failure rate is high, and there are relatively many problems in design and use, and the quality of new devices. Problems are found at this stage, and the cost of change is also low. Therefore, the early warning threshold should be appropriately reduced and the coverage of failure analysis should be increased.

The failures in the production stage mainly focus on early failures, batch material problems, ESD problems, tested stress problems and undetected design hazards. For the device failure problem at this stage, the early warning threshold is relatively high.

The failure of devices in the engineering stage is mainly caused by early failure, batch material problems, undetected design hazards, environmental problems such as lightning, humidity, vulcanization, accidental failure and loss failure. The early warning threshold at this stage should be between the development and production stages. Through the failure analysis work in the engineering stage, the obvious abnormal failure data can be removed, and the company's actual device reliability data can be accumulated for a long time, and the company's device failure rate, failure mode and mechanism database can be established.

Information feedback mechanism

The failure occurs in the stages of development, production and engineering, and the collection department of failure information also exists in multiple departments. If the failure information is not fed back to the failure analysis department in time, it will inevitably affect the timeliness of failure analysis and the accuracy of analysis results. Therefore, it is necessary to establish an effective feedback channel so that the failure analysis engineer can timely understand the failure situation and analysis progress of the device.

Professional technology and personnel

The failure analysis work is highly professional. From the perspective of the failure analysis process, it can be divided into failure confirmation, nondestructive testing, anatomical analysis, failure cause verification, improvement measure verification and other stages. In addition to the need for professional analysis laboratory to carry out anatomical analysis, the other stages also put forward higher requirements for the overall quality of the failure analysis personnel. Strictly speaking, full-time failure analysis engineers should have rich experience in design and development, and be familiar with failure physics, hardware reliability, failure analysis instruments and their use and other knowledge and skills.

Be 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 failure analysis can provide ideas and clues for reliability work. Through the accumulation of several independent failure analysis, in-depth research on a certain type of device or a certain technical topic can be launched in time to solve problems at a certain level, thus improving the role and significance of failure analysis. Therefore, failure analysis personnel should have high technical sensitivity, be good at refining and summarizing, and constantly expand and deepen the breadth and depth of reliability work through daily failure analysis.

The above is the relevant content of failure analysis of electronic components organized by Chuangxin Testing. I hope it can help you. Our company has a team of professional engineers and industry elites, and has three standardized laboratories with an area of more than 1800 square meters, which can undertake various test projects such as electronic component testing and verification, IC authenticity identification, product design and material selection, failure analysis, functional testing, factory incoming material inspection and tape weaving.