What is the purpose and function of aging test for electronic products?

Burn in refers to the use of high temperature methods to impose environmental stress on the product, while the environmental stress screen (ESS: Environment Stress Screen) includes not only high temperature stress, but also many other stresses, such as temperature cycling, random vibration, etc., as shown in the figure. Show. Therefore, aging is a kind of environmental stress screening. But now many companies have expanded the meaning of the word "aging". Aging is equivalent to environmental stress screening. Environmental stress screening is commonly known as aging, and we continue to use the word "aging".

Why must electronic products undergo a 100% burn-in test before delivery?

Because in the production and processing of electronic products, due to complex processing and extensive use of components and materials, various defects will be introduced (even if the product is well designed). Whether it is a production process defect or a component defect, it can be divided into obvious defects and latent defects. Obvious defects refer to those defects that cause the product to fail to work normally, such as short circuits/open circuits. Potential defects cause the product to be temporarily usable, but the defects will be quickly exposed during use, and the product will not work properly, such as insufficient solder. Although the product can be used, slight vibration may cause the solder joint to open. Obvious defects can be inspected by conventional inspection methods (ie ICT: In-Circuit Test, In-Circuit Test, which is to check the manufacturing defects and components by testing the electrical properties and electrical connections of online components (components made on the board) A bad standard test method. It mainly checks the open and short-circuit conditions of online single components and various circuit networks, and has the characteristics of simple operation, fast and rapid, accurate fault location, FT, etc.) to find out. Latent defects cannot be found by conventional inspection methods, but are eliminated by aging methods. If the aging method is not effective, the potential defects that have not been eliminated will eventually manifest in the form of early failure (or failure) during the operation of the product, which will lead to an increase in the repair rate of the product and an increase in repair costs.

Electronic products are strictly tested for 100% aging before they leave the factory.

So it can greatly reduce the defect rate of the product.

In fact, the aging test has a more important purpose (same as the test): to continuously improve the processing technology of the product through aging, so that the quality of the components is continuously improved, and it is improved to the point where aging is not required. The circuit board must be tested after aging. If a component is found to be frequently damaged during the test, it means that the device has potential defects and the supplier needs to improve its quality.

Zhenhuan Electronic was founded in 2008, specialize in external power adaptor, ac dc adapter, Outdoor Waterproof Power Supply, led driver, Power Transformer, switching power supply, dimmable or non-dimmable LED Drivers and Battery Charger in Shenzhen, China.