Briefly describe the category and importance of reliability testing of electronic products

Date：2022-07-22 15:06:11Views：656

Generally, the test to evaluate and analyze the reliability of electronic products is called reliability test. The test results provide a basis for fault analysis, study of corrective measures taken, and judgment of whether the product meets the index requirements. According to the method and purpose of reliability statistical test, reliability statistical test can be divided into reliability verification test and reliability measurement test. Reliability measurement test is a test for determining reliability characteristics or their quantities, which is usually used to provide reliability data. It may also expose problems in the design, raw materials and process of the product. Reliability verification test is used to verify whether the reliability characteristic value of equipment meets the specified reliability requirements. Generally, reliability identification and acceptance test are collectively referred to as reliability verification test.

1. If divided by environmental conditions, it can be divided into simulation test and field test under various stress conditions;

2. Divided by test items, it can be divided into environmental test, life test, accelerated test and various special tests;

3. If it is divided according to the purpose of the test, it can be divided into screening test, identification test and acceptance test;

4. If divided according to the nature of the test, it can also be divided into destructive test and non-destructive test.

5. However, the commonly used classification is to classify it into five categories:

A. Environmental test

B. Life test

C. Screening test

D. Field service test

E. Qualification test

Reliability is closely related to the development of electronic industry, and its importance can be explained from the three characteristics of the development of electronic products.

First, the complexity of electronic products is increasing. The first ore radio used by people is very simple. Then there have been various types of radios, recorders, video cameras, communicators, radars, guidance systems, electronic computers and aerospace control equipment, and the complexity continues to grow. The obvious sign of the complexity of electronic products is the number of components required. The reliability of electronic products depends on the reliability of the components used, because the failure of any component and solder joint in electronic products will lead to system failure. Generally speaking, the more components used in electronic products, the more serious the reliability problem is. In order to ensure the reliable operation of products or systems, the requirements for the reliability of components are very high and demanding.

Secondly, the use environment of electronic products is increasingly harsh. From the laboratory to the field, from the tropics to the cold zone, from the land to the deep sea, from the high altitude to the space, we are experiencing different environmental conditions. In addition to the influence of temperature and humidity, the influence of sea water, salt fog, impact, vibration, cosmic particles, various radiation and other factors on electronic components increases the possibility of product failure.

Third, the device density of electronic products is increasing. From the first generation of electronic tube products to the second generation of transistors, and now from small and medium-sized integrated circuits to large-scale and super large-scale integrated circuits, electronic products are developing towards miniaturization and miniaturization, which leads to the continuous increase of device density, thus increasing the internal temperature rise and deteriorating the heat dissipation conditions. The reliability of electronic components will be reduced with the increase of ambient temperature, so the reliability of components has attracted great attention.

Reliability has been listed as an important quality index of products for assessment and inspection. For a long time, people only use the technical performance index of products as a symbol to measure the quality of electronic components, which only reflects one aspect of product quality, but can not reflect the overall picture of product quality. Because if the product is unreliable, even its technical performance is no matter how good it is. In a sense, reliability can comprehensively reflect the quality of products.

Reliability engineering is a comprehensive discipline. Its development can drive and promote the development of product design, manufacturing, use, materials, processes, equipment and management, and raise electronic components and other electronic products to a new level. Because of this, reliability has become a special subject, which is studied as a special technology.

The above is the content related to the reliability test of electronic products compiled by the core detection team. I hope it will be helpful to you. Shenzhen Chuangxin Online Testing Technology Co., Ltd. is a well-known professional testing institution for electronic components in China, with 3 standardized laboratories covering an area of more than 1000 square meters. The scope of testing services covers: electronic component testing and verification, IC authenticity identification, product design and material selection, failure analysis, function testing, factory incoming material inspection, component X-ray testing, taping and other test items.