During the processing of electronic products, various defects will be introduced due to complicated processing and extensive use of components and materials. Whether it is a processing 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 not work normally, such as short circuit/open circuit. Potential defects cause the product to be temporarily usable, but the defects will be quickly exposed during use, and the product will not work normally, such as insufficient solder. Although the product can be used, slight vibration may cause the solder joint to open. Obvious defects can be found by inspecting various components through conventional inspection methods. Potential defects cannot be found by general testing methods, but need to be gradually exposed during use, such as surface contamination of silicon wafers, unstable organization, soldering voids, poor matching of thermal resistance between chips and packages, etc.
Latent defects generally need to run for about a thousand hours at the rated power and normal operating temperature of the components before they are fully exposed. However, it is unrealistic to test each component for one thousand hours, so thermal stress and bias need to be applied to it. High temperature aging can advance the hidden dangers of component defects, welding, assembly, etc. in the production process Exposed. The high-temperature aging test needs to be tested in a specific temperature environment, which requires the help of a high-temperature oven, which can mimic different high-temperature environments, as long as the oven at the appropriate temperature is selected according to the different aging requirements of the product.
After the product is aging, electrical parameter measurement must be performed to screen out the components that fail or change value, and eliminate the early failure of the product as much as possible before normal use, so as to ensure that the factory products can withstand the test of time.
Aging can not only expose potential defects in advance, but also has a more important purpose: to continuously improve the product processing technology through aging, so that the quality of components is continuously improved, and it is improved until aging is unnecessary.Yihexing Electronic Aging OvenIt is composed of chamber body, heating system, electrical control system, air supply system, protection system, etc. The independent over-temperature protection device improves the reliability and safety of the product, and is especially suitable for the aging and drying of the production process of LED, LCD, quartz crystal, capacitor, resistor, inductor and other products.